1 #!/usr/bin/env perl !! 1 #!/usr/bin/perl
2 # This is a POC for reading the text represent 2 # This is a POC for reading the text representation of trace output related to
3 # page reclaim. It makes an attempt to extract 3 # page reclaim. It makes an attempt to extract some high-level information on
4 # what is going on. The accuracy of the parser 4 # what is going on. The accuracy of the parser may vary
5 # 5 #
6 # Example usage: trace-vmscan-postprocess.pl < !! 6 # Example usage: trace-vmscan-postprocess.pl < /sys/kernel/debug/tracing/trace_pipe
7 # other options 7 # other options
8 # --read-procstat If the trace lacks pro 8 # --read-procstat If the trace lacks process info, get it from /proc
9 # --ignore-pid Aggregate processes of 9 # --ignore-pid Aggregate processes of the same name together
10 # 10 #
11 # Copyright (c) IBM Corporation 2009 11 # Copyright (c) IBM Corporation 2009
12 # Author: Mel Gorman <mel@csn.ul.ie> 12 # Author: Mel Gorman <mel@csn.ul.ie>
13 use strict; 13 use strict;
14 use Getopt::Long; 14 use Getopt::Long;
15 15
16 # Tracepoint events 16 # Tracepoint events
17 use constant MM_VMSCAN_DIRECT_RECLAIM_BEGIN 17 use constant MM_VMSCAN_DIRECT_RECLAIM_BEGIN => 1;
18 use constant MM_VMSCAN_DIRECT_RECLAIM_END 18 use constant MM_VMSCAN_DIRECT_RECLAIM_END => 2;
19 use constant MM_VMSCAN_KSWAPD_WAKE 19 use constant MM_VMSCAN_KSWAPD_WAKE => 3;
20 use constant MM_VMSCAN_KSWAPD_SLEEP 20 use constant MM_VMSCAN_KSWAPD_SLEEP => 4;
21 use constant MM_VMSCAN_LRU_SHRINK_ACTIVE 21 use constant MM_VMSCAN_LRU_SHRINK_ACTIVE => 5;
22 use constant MM_VMSCAN_LRU_SHRINK_INACTIVE 22 use constant MM_VMSCAN_LRU_SHRINK_INACTIVE => 6;
23 use constant MM_VMSCAN_LRU_ISOLATE 23 use constant MM_VMSCAN_LRU_ISOLATE => 7;
24 use constant MM_VMSCAN_WRITEPAGE_FILE_SYNC 24 use constant MM_VMSCAN_WRITEPAGE_FILE_SYNC => 8;
25 use constant MM_VMSCAN_WRITEPAGE_ANON_SYNC 25 use constant MM_VMSCAN_WRITEPAGE_ANON_SYNC => 9;
26 use constant MM_VMSCAN_WRITEPAGE_FILE_ASYNC 26 use constant MM_VMSCAN_WRITEPAGE_FILE_ASYNC => 10;
27 use constant MM_VMSCAN_WRITEPAGE_ANON_ASYNC 27 use constant MM_VMSCAN_WRITEPAGE_ANON_ASYNC => 11;
28 use constant MM_VMSCAN_WRITEPAGE_ASYNC 28 use constant MM_VMSCAN_WRITEPAGE_ASYNC => 12;
29 use constant EVENT_UNKNOWN 29 use constant EVENT_UNKNOWN => 13;
30 30
31 # Per-order events 31 # Per-order events
32 use constant MM_VMSCAN_DIRECT_RECLAIM_BEGIN_PE 32 use constant MM_VMSCAN_DIRECT_RECLAIM_BEGIN_PERORDER => 11;
33 use constant MM_VMSCAN_WAKEUP_KSWAPD_PERORDER 33 use constant MM_VMSCAN_WAKEUP_KSWAPD_PERORDER => 12;
34 use constant MM_VMSCAN_KSWAPD_WAKE_PERORDER 34 use constant MM_VMSCAN_KSWAPD_WAKE_PERORDER => 13;
35 use constant HIGH_KSWAPD_REWAKEUP_PERORDER 35 use constant HIGH_KSWAPD_REWAKEUP_PERORDER => 14;
36 36
37 # Constants used to track state 37 # Constants used to track state
38 use constant STATE_DIRECT_BEGIN 38 use constant STATE_DIRECT_BEGIN => 15;
39 use constant STATE_DIRECT_ORDER 39 use constant STATE_DIRECT_ORDER => 16;
40 use constant STATE_KSWAPD_BEGIN 40 use constant STATE_KSWAPD_BEGIN => 17;
41 use constant STATE_KSWAPD_ORDER 41 use constant STATE_KSWAPD_ORDER => 18;
42 42
43 # High-level events extrapolated from tracepoi 43 # High-level events extrapolated from tracepoints
44 use constant HIGH_DIRECT_RECLAIM_LATENCY 44 use constant HIGH_DIRECT_RECLAIM_LATENCY => 19;
45 use constant HIGH_KSWAPD_LATENCY 45 use constant HIGH_KSWAPD_LATENCY => 20;
46 use constant HIGH_KSWAPD_REWAKEUP 46 use constant HIGH_KSWAPD_REWAKEUP => 21;
47 use constant HIGH_NR_SCANNED 47 use constant HIGH_NR_SCANNED => 22;
48 use constant HIGH_NR_TAKEN 48 use constant HIGH_NR_TAKEN => 23;
49 use constant HIGH_NR_RECLAIMED 49 use constant HIGH_NR_RECLAIMED => 24;
50 use constant HIGH_NR_FILE_SCANNED !! 50 use constant HIGH_NR_CONTIG_DIRTY => 25;
51 use constant HIGH_NR_ANON_SCANNED <<
52 use constant HIGH_NR_FILE_RECLAIMED <<
53 use constant HIGH_NR_ANON_RECLAIMED <<
54 51
55 my %perprocesspid; 52 my %perprocesspid;
56 my %perprocess; 53 my %perprocess;
57 my %last_procmap; 54 my %last_procmap;
58 my $opt_ignorepid; 55 my $opt_ignorepid;
59 my $opt_read_procstat; 56 my $opt_read_procstat;
60 57
61 my $total_wakeup_kswapd; 58 my $total_wakeup_kswapd;
62 my ($total_direct_reclaim, $total_direct_nr_sc 59 my ($total_direct_reclaim, $total_direct_nr_scanned);
63 my ($total_direct_nr_file_scanned, $total_dire <<
64 my ($total_direct_latency, $total_kswapd_laten 60 my ($total_direct_latency, $total_kswapd_latency);
65 my ($total_direct_nr_reclaimed); 61 my ($total_direct_nr_reclaimed);
66 my ($total_direct_nr_file_reclaimed, $total_di <<
67 my ($total_direct_writepage_file_sync, $total_ 62 my ($total_direct_writepage_file_sync, $total_direct_writepage_file_async);
68 my ($total_direct_writepage_anon_sync, $total_ 63 my ($total_direct_writepage_anon_sync, $total_direct_writepage_anon_async);
69 my ($total_kswapd_nr_scanned, $total_kswapd_wa 64 my ($total_kswapd_nr_scanned, $total_kswapd_wake);
70 my ($total_kswapd_nr_file_scanned, $total_kswa <<
71 my ($total_kswapd_writepage_file_sync, $total_ 65 my ($total_kswapd_writepage_file_sync, $total_kswapd_writepage_file_async);
72 my ($total_kswapd_writepage_anon_sync, $total_ 66 my ($total_kswapd_writepage_anon_sync, $total_kswapd_writepage_anon_async);
73 my ($total_kswapd_nr_reclaimed); 67 my ($total_kswapd_nr_reclaimed);
74 my ($total_kswapd_nr_file_reclaimed, $total_ks <<
75 68
76 # Catch sigint and exit on request 69 # Catch sigint and exit on request
77 my $sigint_report = 0; 70 my $sigint_report = 0;
78 my $sigint_exit = 0; 71 my $sigint_exit = 0;
79 my $sigint_pending = 0; 72 my $sigint_pending = 0;
80 my $sigint_received = 0; 73 my $sigint_received = 0;
81 sub sigint_handler { 74 sub sigint_handler {
82 my $current_time = time; 75 my $current_time = time;
83 if ($current_time - 2 > $sigint_receiv 76 if ($current_time - 2 > $sigint_received) {
84 print "SIGINT received, report 77 print "SIGINT received, report pending. Hit ctrl-c again to exit\n";
85 $sigint_report = 1; 78 $sigint_report = 1;
86 } else { 79 } else {
87 if (!$sigint_exit) { 80 if (!$sigint_exit) {
88 print "Second SIGINT r 81 print "Second SIGINT received quickly, exiting\n";
89 } 82 }
90 $sigint_exit++; 83 $sigint_exit++;
91 } 84 }
92 85
93 if ($sigint_exit > 3) { 86 if ($sigint_exit > 3) {
94 print "Many SIGINTs received, 87 print "Many SIGINTs received, exiting now without report\n";
95 exit; 88 exit;
96 } 89 }
97 90
98 $sigint_received = $current_time; 91 $sigint_received = $current_time;
99 $sigint_pending = 1; 92 $sigint_pending = 1;
100 } 93 }
101 $SIG{INT} = "sigint_handler"; 94 $SIG{INT} = "sigint_handler";
102 95
103 # Parse command line options 96 # Parse command line options
104 GetOptions( 97 GetOptions(
105 'ignore-pid' => \$opt_ignorepi 98 'ignore-pid' => \$opt_ignorepid,
106 'read-procstat' => \$opt_read_pro 99 'read-procstat' => \$opt_read_procstat,
107 ); 100 );
108 101
109 # Defaults for dynamically discovered regex's 102 # Defaults for dynamically discovered regex's
110 my $regex_direct_begin_default = 'order=([0-9] !! 103 my $regex_direct_begin_default = 'order=([0-9]*) may_writepage=([0-9]*) gfp_flags=([A-Z_|]*)';
111 my $regex_direct_end_default = 'nr_reclaimed=( 104 my $regex_direct_end_default = 'nr_reclaimed=([0-9]*)';
112 my $regex_kswapd_wake_default = 'nid=([0-9]*) 105 my $regex_kswapd_wake_default = 'nid=([0-9]*) order=([0-9]*)';
113 my $regex_kswapd_sleep_default = 'nid=([0-9]*) 106 my $regex_kswapd_sleep_default = 'nid=([0-9]*)';
114 my $regex_wakeup_kswapd_default = 'nid=([0-9]* !! 107 my $regex_wakeup_kswapd_default = 'nid=([0-9]*) zid=([0-9]*) order=([0-9]*)';
115 my $regex_lru_isolate_default = 'classzone=([0 !! 108 my $regex_lru_isolate_default = 'isolate_mode=([0-9]*) order=([0-9]*) nr_requested=([0-9]*) nr_scanned=([0-9]*) nr_taken=([0-9]*) contig_taken=([0-9]*) contig_dirty=([0-9]*) contig_failed=([0-9]*)';
116 my $regex_lru_shrink_inactive_default = 'nid=( !! 109 my $regex_lru_shrink_inactive_default = 'nid=([0-9]*) zid=([0-9]*) nr_scanned=([0-9]*) nr_reclaimed=([0-9]*) priority=([0-9]*) flags=([A-Z_|]*)';
117 my $regex_lru_shrink_active_default = 'lru=([A !! 110 my $regex_lru_shrink_active_default = 'lru=([A-Z_]*) nr_scanned=([0-9]*) nr_rotated=([0-9]*) priority=([0-9]*)';
118 my $regex_writepage_default = 'page=([0-9a-f]* 111 my $regex_writepage_default = 'page=([0-9a-f]*) pfn=([0-9]*) flags=([A-Z_|]*)';
119 112
120 # Dyanically discovered regex 113 # Dyanically discovered regex
121 my $regex_direct_begin; 114 my $regex_direct_begin;
122 my $regex_direct_end; 115 my $regex_direct_end;
123 my $regex_kswapd_wake; 116 my $regex_kswapd_wake;
124 my $regex_kswapd_sleep; 117 my $regex_kswapd_sleep;
125 my $regex_wakeup_kswapd; 118 my $regex_wakeup_kswapd;
126 my $regex_lru_isolate; 119 my $regex_lru_isolate;
127 my $regex_lru_shrink_inactive; 120 my $regex_lru_shrink_inactive;
128 my $regex_lru_shrink_active; 121 my $regex_lru_shrink_active;
129 my $regex_writepage; 122 my $regex_writepage;
130 123
131 # Static regex used. Specified like this for r 124 # Static regex used. Specified like this for readability and for use with /o
132 # (process_pid) (cpus 125 # (process_pid) (cpus ) ( time ) (tpoint ) (details)
133 my $regex_traceevent = '\s*([a-zA-Z0-9-]*)\s*( !! 126 my $regex_traceevent = '\s*([a-zA-Z0-9-]*)\s*(\[[0-9]*\])\s*([0-9.]*):\s*([a-zA-Z_]*):\s*(.*)';
134 my $regex_statname = '[-0-9]*\s\((.*)\).*'; 127 my $regex_statname = '[-0-9]*\s\((.*)\).*';
135 my $regex_statppid = '[-0-9]*\s\(.*\)\s[A-Za-z 128 my $regex_statppid = '[-0-9]*\s\(.*\)\s[A-Za-z]\s([0-9]*).*';
136 129
137 sub generate_traceevent_regex { 130 sub generate_traceevent_regex {
138 my $event = shift; 131 my $event = shift;
139 my $default = shift; 132 my $default = shift;
140 my $regex; 133 my $regex;
141 134
142 # Read the event format or use the def 135 # Read the event format or use the default
143 if (!open (FORMAT, "/sys/kernel/tracin !! 136 if (!open (FORMAT, "/sys/kernel/debug/tracing/events/$event/format")) {
144 print("WARNING: Event $event f 137 print("WARNING: Event $event format string not found\n");
145 return $default; 138 return $default;
146 } else { 139 } else {
147 my $line; 140 my $line;
148 while (!eof(FORMAT)) { 141 while (!eof(FORMAT)) {
149 $line = <FORMAT>; 142 $line = <FORMAT>;
150 $line =~ s/, REC->.*// 143 $line =~ s/, REC->.*//;
151 if ($line =~ /^print f 144 if ($line =~ /^print fmt:\s"(.*)".*/) {
152 $regex = $1; 145 $regex = $1;
153 $regex =~ s/%s 146 $regex =~ s/%s/\([0-9a-zA-Z|_]*\)/g;
154 $regex =~ s/%p 147 $regex =~ s/%p/\([0-9a-f]*\)/g;
155 $regex =~ s/%d 148 $regex =~ s/%d/\([-0-9]*\)/g;
156 $regex =~ s/%l 149 $regex =~ s/%ld/\([-0-9]*\)/g;
157 $regex =~ s/%l 150 $regex =~ s/%lu/\([0-9]*\)/g;
158 } 151 }
159 } 152 }
160 } 153 }
161 154
162 # Can't handle the print_flags stuff b 155 # Can't handle the print_flags stuff but in the context of this
163 # script, it really doesn't matter 156 # script, it really doesn't matter
164 $regex =~ s/\(REC.*\) \? __print_flags 157 $regex =~ s/\(REC.*\) \? __print_flags.*//;
165 158
166 # Verify fields are in the right order 159 # Verify fields are in the right order
167 my $tuple; 160 my $tuple;
168 foreach $tuple (split /\s/, $regex) { 161 foreach $tuple (split /\s/, $regex) {
169 my ($key, $value) = split(/=/, 162 my ($key, $value) = split(/=/, $tuple);
170 my $expected = shift; 163 my $expected = shift;
171 if ($key ne $expected) { 164 if ($key ne $expected) {
172 print("WARNING: Format 165 print("WARNING: Format not as expected for event $event '$key' != '$expected'\n");
173 $regex =~ s/$key=\((.* 166 $regex =~ s/$key=\((.*)\)/$key=$1/;
174 } 167 }
175 } 168 }
176 169
177 if (defined shift) { 170 if (defined shift) {
178 die("Fewer fields than expecte 171 die("Fewer fields than expected in format");
179 } 172 }
180 173
181 return $regex; 174 return $regex;
182 } 175 }
183 176
184 $regex_direct_begin = generate_traceevent_rege 177 $regex_direct_begin = generate_traceevent_regex(
185 "vmscan/mm_vmscan_dire 178 "vmscan/mm_vmscan_direct_reclaim_begin",
186 $regex_direct_begin_de 179 $regex_direct_begin_default,
187 "order", "gfp_flags"); !! 180 "order", "may_writepage",
>> 181 "gfp_flags");
188 $regex_direct_end = generate_traceevent_regex( 182 $regex_direct_end = generate_traceevent_regex(
189 "vmscan/mm_vmscan_dire 183 "vmscan/mm_vmscan_direct_reclaim_end",
190 $regex_direct_end_defa 184 $regex_direct_end_default,
191 "nr_reclaimed"); 185 "nr_reclaimed");
192 $regex_kswapd_wake = generate_traceevent_regex 186 $regex_kswapd_wake = generate_traceevent_regex(
193 "vmscan/mm_vmscan_kswa 187 "vmscan/mm_vmscan_kswapd_wake",
194 $regex_kswapd_wake_def 188 $regex_kswapd_wake_default,
195 "nid", "order"); 189 "nid", "order");
196 $regex_kswapd_sleep = generate_traceevent_rege 190 $regex_kswapd_sleep = generate_traceevent_regex(
197 "vmscan/mm_vmscan_kswa 191 "vmscan/mm_vmscan_kswapd_sleep",
198 $regex_kswapd_sleep_de 192 $regex_kswapd_sleep_default,
199 "nid"); 193 "nid");
200 $regex_wakeup_kswapd = generate_traceevent_reg 194 $regex_wakeup_kswapd = generate_traceevent_regex(
201 "vmscan/mm_vmscan_wake 195 "vmscan/mm_vmscan_wakeup_kswapd",
202 $regex_wakeup_kswapd_d 196 $regex_wakeup_kswapd_default,
203 "nid", "order", "gfp_f !! 197 "nid", "zid", "order");
204 $regex_lru_isolate = generate_traceevent_regex 198 $regex_lru_isolate = generate_traceevent_regex(
205 "vmscan/mm_vmscan_lru_ 199 "vmscan/mm_vmscan_lru_isolate",
206 $regex_lru_isolate_def 200 $regex_lru_isolate_default,
207 "classzone", "order", !! 201 "isolate_mode", "order",
208 "nr_requested", "nr_sc !! 202 "nr_requested", "nr_scanned", "nr_taken",
209 "lru"); !! 203 "contig_taken", "contig_dirty", "contig_failed");
210 $regex_lru_shrink_inactive = generate_traceeve 204 $regex_lru_shrink_inactive = generate_traceevent_regex(
211 "vmscan/mm_vmscan_lru_ 205 "vmscan/mm_vmscan_lru_shrink_inactive",
212 $regex_lru_shrink_inac 206 $regex_lru_shrink_inactive_default,
213 "nid", "nr_scanned", " !! 207 "nid", "zid",
214 "nr_congested", "nr_im !! 208 "nr_scanned", "nr_reclaimed", "priority",
215 "nr_activate_file", "n !! 209 "flags");
216 "nr_unmap_fail", "prio <<
217 $regex_lru_shrink_active = generate_traceevent 210 $regex_lru_shrink_active = generate_traceevent_regex(
218 "vmscan/mm_vmscan_lru_ 211 "vmscan/mm_vmscan_lru_shrink_active",
219 $regex_lru_shrink_acti 212 $regex_lru_shrink_active_default,
220 "nid", "nr_taken", "nr !! 213 "nid", "zid",
221 "priority", "flags"); !! 214 "lru",
>> 215 "nr_scanned", "nr_rotated", "priority");
222 $regex_writepage = generate_traceevent_regex( 216 $regex_writepage = generate_traceevent_regex(
223 "vmscan/mm_vmscan_writ !! 217 "vmscan/mm_vmscan_writepage",
224 $regex_writepage_defau 218 $regex_writepage_default,
225 "page", "pfn", "flags" 219 "page", "pfn", "flags");
226 220
227 sub read_statline($) { 221 sub read_statline($) {
228 my $pid = $_[0]; 222 my $pid = $_[0];
229 my $statline; 223 my $statline;
230 224
231 if (open(STAT, "/proc/$pid/stat")) { 225 if (open(STAT, "/proc/$pid/stat")) {
232 $statline = <STAT>; 226 $statline = <STAT>;
233 close(STAT); 227 close(STAT);
234 } 228 }
235 229
236 if ($statline eq '') { 230 if ($statline eq '') {
237 $statline = "-1 (UNKNOWN_PROCE 231 $statline = "-1 (UNKNOWN_PROCESS_NAME) R 0";
238 } 232 }
239 233
240 return $statline; 234 return $statline;
241 } 235 }
242 236
243 sub guess_process_pid($$) { 237 sub guess_process_pid($$) {
244 my $pid = $_[0]; 238 my $pid = $_[0];
245 my $statline = $_[1]; 239 my $statline = $_[1];
246 240
247 if ($pid == 0) { 241 if ($pid == 0) {
248 return "swapper-0"; 242 return "swapper-0";
249 } 243 }
250 244
251 if ($statline !~ /$regex_statname/o) { 245 if ($statline !~ /$regex_statname/o) {
252 die("Failed to math stat line 246 die("Failed to math stat line for process name :: $statline");
253 } 247 }
254 return "$1-$pid"; 248 return "$1-$pid";
255 } 249 }
256 250
257 # Convert sec.usec timestamp format 251 # Convert sec.usec timestamp format
258 sub timestamp_to_ms($) { 252 sub timestamp_to_ms($) {
259 my $timestamp = $_[0]; 253 my $timestamp = $_[0];
260 254
261 my ($sec, $usec) = split (/\./, $times 255 my ($sec, $usec) = split (/\./, $timestamp);
262 return ($sec * 1000) + ($usec / 1000); 256 return ($sec * 1000) + ($usec / 1000);
263 } 257 }
264 258
265 sub process_events { 259 sub process_events {
266 my $traceevent; 260 my $traceevent;
267 my $process_pid; 261 my $process_pid;
268 my $cpus; 262 my $cpus;
269 my $timestamp; 263 my $timestamp;
270 my $tracepoint; 264 my $tracepoint;
271 my $details; 265 my $details;
272 my $statline; 266 my $statline;
273 267
274 # Read each line of the event log 268 # Read each line of the event log
275 EVENT_PROCESS: 269 EVENT_PROCESS:
276 while ($traceevent = <STDIN>) { 270 while ($traceevent = <STDIN>) {
277 if ($traceevent =~ /$regex_tra 271 if ($traceevent =~ /$regex_traceevent/o) {
278 $process_pid = $1; 272 $process_pid = $1;
279 $timestamp = $4; !! 273 $timestamp = $3;
280 $tracepoint = $5; !! 274 $tracepoint = $4;
281 275
282 $process_pid =~ /(.*)- 276 $process_pid =~ /(.*)-([0-9]*)$/;
283 my $process = $1; 277 my $process = $1;
284 my $pid = $2; 278 my $pid = $2;
285 279
286 if ($process eq "") { 280 if ($process eq "") {
287 $process = $la 281 $process = $last_procmap{$pid};
288 $process_pid = 282 $process_pid = "$process-$pid";
289 } 283 }
290 $last_procmap{$pid} = 284 $last_procmap{$pid} = $process;
291 285
292 if ($opt_read_procstat 286 if ($opt_read_procstat) {
293 $statline = re 287 $statline = read_statline($pid);
294 if ($opt_read_ 288 if ($opt_read_procstat && $process eq '') {
295 $proce 289 $process_pid = guess_process_pid($pid, $statline);
296 } 290 }
297 } 291 }
298 } else { 292 } else {
299 next; 293 next;
300 } 294 }
301 295
302 # Perl Switch() sucks majorly 296 # Perl Switch() sucks majorly
303 if ($tracepoint eq "mm_vmscan_ 297 if ($tracepoint eq "mm_vmscan_direct_reclaim_begin") {
304 $timestamp = timestamp 298 $timestamp = timestamp_to_ms($timestamp);
305 $perprocesspid{$proces 299 $perprocesspid{$process_pid}->{MM_VMSCAN_DIRECT_RECLAIM_BEGIN}++;
306 $perprocesspid{$proces 300 $perprocesspid{$process_pid}->{STATE_DIRECT_BEGIN} = $timestamp;
307 301
308 $details = $6; !! 302 $details = $5;
309 if ($details !~ /$rege 303 if ($details !~ /$regex_direct_begin/o) {
310 print "WARNING 304 print "WARNING: Failed to parse mm_vmscan_direct_reclaim_begin as expected\n";
311 print " 305 print " $details\n";
312 print " 306 print " $regex_direct_begin\n";
313 next; 307 next;
314 } 308 }
315 my $order = $1; 309 my $order = $1;
316 $perprocesspid{$proces 310 $perprocesspid{$process_pid}->{MM_VMSCAN_DIRECT_RECLAIM_BEGIN_PERORDER}[$order]++;
317 $perprocesspid{$proces 311 $perprocesspid{$process_pid}->{STATE_DIRECT_ORDER} = $order;
318 } elsif ($tracepoint eq "mm_vm 312 } elsif ($tracepoint eq "mm_vmscan_direct_reclaim_end") {
319 # Count the event itse 313 # Count the event itself
320 my $index = $perproces 314 my $index = $perprocesspid{$process_pid}->{MM_VMSCAN_DIRECT_RECLAIM_END};
321 $perprocesspid{$proces 315 $perprocesspid{$process_pid}->{MM_VMSCAN_DIRECT_RECLAIM_END}++;
322 316
323 # Record how long dire 317 # Record how long direct reclaim took this time
324 if (defined $perproces 318 if (defined $perprocesspid{$process_pid}->{STATE_DIRECT_BEGIN}) {
325 $timestamp = t 319 $timestamp = timestamp_to_ms($timestamp);
326 my $order = $p 320 my $order = $perprocesspid{$process_pid}->{STATE_DIRECT_ORDER};
327 my $latency = 321 my $latency = ($timestamp - $perprocesspid{$process_pid}->{STATE_DIRECT_BEGIN});
328 $perprocesspid 322 $perprocesspid{$process_pid}->{HIGH_DIRECT_RECLAIM_LATENCY}[$index] = "$order-$latency";
329 } 323 }
330 } elsif ($tracepoint eq "mm_vm 324 } elsif ($tracepoint eq "mm_vmscan_kswapd_wake") {
331 $details = $6; !! 325 $details = $5;
332 if ($details !~ /$rege 326 if ($details !~ /$regex_kswapd_wake/o) {
333 print "WARNING 327 print "WARNING: Failed to parse mm_vmscan_kswapd_wake as expected\n";
334 print " 328 print " $details\n";
335 print " 329 print " $regex_kswapd_wake\n";
336 next; 330 next;
337 } 331 }
338 332
339 my $order = $2; 333 my $order = $2;
340 $perprocesspid{$proces 334 $perprocesspid{$process_pid}->{STATE_KSWAPD_ORDER} = $order;
341 if (!$perprocesspid{$p 335 if (!$perprocesspid{$process_pid}->{STATE_KSWAPD_BEGIN}) {
342 $timestamp = t 336 $timestamp = timestamp_to_ms($timestamp);
343 $perprocesspid 337 $perprocesspid{$process_pid}->{MM_VMSCAN_KSWAPD_WAKE}++;
344 $perprocesspid 338 $perprocesspid{$process_pid}->{STATE_KSWAPD_BEGIN} = $timestamp;
345 $perprocesspid 339 $perprocesspid{$process_pid}->{MM_VMSCAN_KSWAPD_WAKE_PERORDER}[$order]++;
346 } else { 340 } else {
347 $perprocesspid 341 $perprocesspid{$process_pid}->{HIGH_KSWAPD_REWAKEUP}++;
348 $perprocesspid 342 $perprocesspid{$process_pid}->{HIGH_KSWAPD_REWAKEUP_PERORDER}[$order]++;
349 } 343 }
350 } elsif ($tracepoint eq "mm_vm 344 } elsif ($tracepoint eq "mm_vmscan_kswapd_sleep") {
351 345
352 # Count the event itse 346 # Count the event itself
353 my $index = $perproces 347 my $index = $perprocesspid{$process_pid}->{MM_VMSCAN_KSWAPD_SLEEP};
354 $perprocesspid{$proces 348 $perprocesspid{$process_pid}->{MM_VMSCAN_KSWAPD_SLEEP}++;
355 349
356 # Record how long kswa 350 # Record how long kswapd was awake
357 $timestamp = timestamp 351 $timestamp = timestamp_to_ms($timestamp);
358 my $order = $perproces 352 my $order = $perprocesspid{$process_pid}->{STATE_KSWAPD_ORDER};
359 my $latency = ($timest 353 my $latency = ($timestamp - $perprocesspid{$process_pid}->{STATE_KSWAPD_BEGIN});
360 $perprocesspid{$proces 354 $perprocesspid{$process_pid}->{HIGH_KSWAPD_LATENCY}[$index] = "$order-$latency";
361 $perprocesspid{$proces 355 $perprocesspid{$process_pid}->{STATE_KSWAPD_BEGIN} = 0;
362 } elsif ($tracepoint eq "mm_vm 356 } elsif ($tracepoint eq "mm_vmscan_wakeup_kswapd") {
363 $perprocesspid{$proces 357 $perprocesspid{$process_pid}->{MM_VMSCAN_WAKEUP_KSWAPD}++;
364 358
365 $details = $6; !! 359 $details = $5;
366 if ($details !~ /$rege 360 if ($details !~ /$regex_wakeup_kswapd/o) {
367 print "WARNING 361 print "WARNING: Failed to parse mm_vmscan_wakeup_kswapd as expected\n";
368 print " 362 print " $details\n";
369 print " 363 print " $regex_wakeup_kswapd\n";
370 next; 364 next;
371 } 365 }
372 my $order = $2; !! 366 my $order = $3;
373 $perprocesspid{$proces 367 $perprocesspid{$process_pid}->{MM_VMSCAN_WAKEUP_KSWAPD_PERORDER}[$order]++;
374 } elsif ($tracepoint eq "mm_vm 368 } elsif ($tracepoint eq "mm_vmscan_lru_isolate") {
375 $details = $6; !! 369 $details = $5;
376 if ($details !~ /$rege 370 if ($details !~ /$regex_lru_isolate/o) {
377 print "WARNING 371 print "WARNING: Failed to parse mm_vmscan_lru_isolate as expected\n";
378 print " 372 print " $details\n";
379 print " 373 print " $regex_lru_isolate/o\n";
380 next; 374 next;
381 } 375 }
>> 376 my $isolate_mode = $1;
382 my $nr_scanned = $4; 377 my $nr_scanned = $4;
383 my $lru = $7; !! 378 my $nr_contig_dirty = $7;
384 379
385 # To closer match vmst !! 380 # To closer match vmstat scanning statistics, only count isolate_both
386 # inactive lru as scan !! 381 # and isolate_inactive as scanning. isolate_active is rotation
387 if ($lru =~ /inactive_ !! 382 # isolate_inactive == 1
>> 383 # isolate_active == 2
>> 384 # isolate_both == 3
>> 385 if ($isolate_mode != 2) {
388 $perprocesspid 386 $perprocesspid{$process_pid}->{HIGH_NR_SCANNED} += $nr_scanned;
389 if ($lru =~ /_ <<
390 $perpr <<
391 } else { <<
392 $perpr <<
393 } <<
394 } 387 }
>> 388 $perprocesspid{$process_pid}->{HIGH_NR_CONTIG_DIRTY} += $nr_contig_dirty;
395 } elsif ($tracepoint eq "mm_vm 389 } elsif ($tracepoint eq "mm_vmscan_lru_shrink_inactive") {
396 $details = $6; !! 390 $details = $5;
397 if ($details !~ /$rege 391 if ($details !~ /$regex_lru_shrink_inactive/o) {
398 print "WARNING 392 print "WARNING: Failed to parse mm_vmscan_lru_shrink_inactive as expected\n";
399 print " 393 print " $details\n";
400 print " 394 print " $regex_lru_shrink_inactive/o\n";
401 next; 395 next;
402 } 396 }
403 !! 397 my $nr_reclaimed = $4;
404 my $nr_reclaimed = $3; <<
405 my $flags = $13; <<
406 my $file = 0; <<
407 if ($flags =~ /RECLAIM <<
408 $file = 1; <<
409 } <<
410 $perprocesspid{$proces 398 $perprocesspid{$process_pid}->{HIGH_NR_RECLAIMED} += $nr_reclaimed;
411 if ($file) { <<
412 $perprocesspid <<
413 } else { <<
414 $perprocesspid <<
415 } <<
416 } elsif ($tracepoint eq "mm_vm 399 } elsif ($tracepoint eq "mm_vmscan_writepage") {
417 $details = $6; !! 400 $details = $5;
418 if ($details !~ /$rege 401 if ($details !~ /$regex_writepage/o) {
419 print "WARNING 402 print "WARNING: Failed to parse mm_vmscan_writepage as expected\n";
420 print " 403 print " $details\n";
421 print " 404 print " $regex_writepage\n";
422 next; 405 next;
423 } 406 }
424 407
425 my $flags = $3; 408 my $flags = $3;
426 my $file = 0; 409 my $file = 0;
427 my $sync_io = 0; 410 my $sync_io = 0;
428 if ($flags =~ /RECLAIM 411 if ($flags =~ /RECLAIM_WB_FILE/) {
429 $file = 1; 412 $file = 1;
430 } 413 }
431 if ($flags =~ /RECLAIM 414 if ($flags =~ /RECLAIM_WB_SYNC/) {
432 $sync_io = 1; 415 $sync_io = 1;
433 } 416 }
434 if ($sync_io) { 417 if ($sync_io) {
435 if ($file) { 418 if ($file) {
436 $perpr 419 $perprocesspid{$process_pid}->{MM_VMSCAN_WRITEPAGE_FILE_SYNC}++;
437 } else { 420 } else {
438 $perpr 421 $perprocesspid{$process_pid}->{MM_VMSCAN_WRITEPAGE_ANON_SYNC}++;
439 } 422 }
440 } else { 423 } else {
441 if ($file) { 424 if ($file) {
442 $perpr 425 $perprocesspid{$process_pid}->{MM_VMSCAN_WRITEPAGE_FILE_ASYNC}++;
443 } else { 426 } else {
444 $perpr 427 $perprocesspid{$process_pid}->{MM_VMSCAN_WRITEPAGE_ANON_ASYNC}++;
445 } 428 }
446 } 429 }
447 } else { 430 } else {
448 $perprocesspid{$proces 431 $perprocesspid{$process_pid}->{EVENT_UNKNOWN}++;
449 } 432 }
450 433
451 if ($sigint_pending) { 434 if ($sigint_pending) {
452 last EVENT_PROCESS; 435 last EVENT_PROCESS;
453 } 436 }
454 } 437 }
455 } 438 }
456 439
457 sub dump_stats { 440 sub dump_stats {
458 my $hashref = shift; 441 my $hashref = shift;
459 my %stats = %$hashref; 442 my %stats = %$hashref;
460 443
461 # Dump per-process stats 444 # Dump per-process stats
462 my $process_pid; 445 my $process_pid;
463 my $max_strlen = 0; 446 my $max_strlen = 0;
464 447
465 # Get the maximum process name 448 # Get the maximum process name
466 foreach $process_pid (keys %perprocess 449 foreach $process_pid (keys %perprocesspid) {
467 my $len = length($process_pid) 450 my $len = length($process_pid);
468 if ($len > $max_strlen) { 451 if ($len > $max_strlen) {
469 $max_strlen = $len; 452 $max_strlen = $len;
470 } 453 }
471 } 454 }
472 $max_strlen += 2; 455 $max_strlen += 2;
473 456
474 # Work out latencies 457 # Work out latencies
475 printf("\n") if !$opt_ignorepid; 458 printf("\n") if !$opt_ignorepid;
476 printf("Reclaim latencies expressed as 459 printf("Reclaim latencies expressed as order-latency_in_ms\n") if !$opt_ignorepid;
477 foreach $process_pid (keys %stats) { 460 foreach $process_pid (keys %stats) {
478 461
479 if (!$stats{$process_pid}->{HI 462 if (!$stats{$process_pid}->{HIGH_DIRECT_RECLAIM_LATENCY}[0] &&
480 !$stats{$proce 463 !$stats{$process_pid}->{HIGH_KSWAPD_LATENCY}[0]) {
481 next; 464 next;
482 } 465 }
483 466
484 printf "%-" . $max_strlen . "s 467 printf "%-" . $max_strlen . "s ", $process_pid if !$opt_ignorepid;
485 my $index = 0; 468 my $index = 0;
486 while (defined $stats{$process 469 while (defined $stats{$process_pid}->{HIGH_DIRECT_RECLAIM_LATENCY}[$index] ||
487 defined $stats{$proces 470 defined $stats{$process_pid}->{HIGH_KSWAPD_LATENCY}[$index]) {
488 471
489 if ($stats{$process_pi 472 if ($stats{$process_pid}->{HIGH_DIRECT_RECLAIM_LATENCY}[$index]) {
490 printf("%s ", 473 printf("%s ", $stats{$process_pid}->{HIGH_DIRECT_RECLAIM_LATENCY}[$index]) if !$opt_ignorepid;
491 my ($dummy, $l 474 my ($dummy, $latency) = split(/-/, $stats{$process_pid}->{HIGH_DIRECT_RECLAIM_LATENCY}[$index]);
492 $total_direct_ 475 $total_direct_latency += $latency;
493 } else { 476 } else {
494 printf("%s ", 477 printf("%s ", $stats{$process_pid}->{HIGH_KSWAPD_LATENCY}[$index]) if !$opt_ignorepid;
495 my ($dummy, $l 478 my ($dummy, $latency) = split(/-/, $stats{$process_pid}->{HIGH_KSWAPD_LATENCY}[$index]);
496 $total_kswapd_ 479 $total_kswapd_latency += $latency;
497 } 480 }
498 $index++; 481 $index++;
499 } 482 }
500 print "\n" if !$opt_ignorepid; 483 print "\n" if !$opt_ignorepid;
501 } 484 }
502 485
503 # Print out process activity 486 # Print out process activity
504 printf("\n"); 487 printf("\n");
505 printf("%-" . $max_strlen . "s %8s %10 488 printf("%-" . $max_strlen . "s %8s %10s %8s %8s %8s %8s %8s %8s\n", "Process", "Direct", "Wokeup", "Pages", "Pages", "Pages", "Pages", "Time");
506 printf("%-" . $max_strlen . "s %8s %10 489 printf("%-" . $max_strlen . "s %8s %10s %8s %8s %8s %8s %8s %8s\n", "details", "Rclms", "Kswapd", "Scanned", "Rclmed", "Sync-IO", "ASync-IO", "Stalled");
507 foreach $process_pid (keys %stats) { 490 foreach $process_pid (keys %stats) {
508 491
509 if (!$stats{$process_pid}->{MM 492 if (!$stats{$process_pid}->{MM_VMSCAN_DIRECT_RECLAIM_BEGIN}) {
510 next; 493 next;
511 } 494 }
512 495
513 $total_direct_reclaim += $stat 496 $total_direct_reclaim += $stats{$process_pid}->{MM_VMSCAN_DIRECT_RECLAIM_BEGIN};
514 $total_wakeup_kswapd += $stats 497 $total_wakeup_kswapd += $stats{$process_pid}->{MM_VMSCAN_WAKEUP_KSWAPD};
515 $total_direct_nr_scanned += $s 498 $total_direct_nr_scanned += $stats{$process_pid}->{HIGH_NR_SCANNED};
516 $total_direct_nr_file_scanned <<
517 $total_direct_nr_anon_scanned <<
518 $total_direct_nr_reclaimed += 499 $total_direct_nr_reclaimed += $stats{$process_pid}->{HIGH_NR_RECLAIMED};
519 $total_direct_nr_file_reclaime <<
520 $total_direct_nr_anon_reclaime <<
521 $total_direct_writepage_file_s 500 $total_direct_writepage_file_sync += $stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_FILE_SYNC};
522 $total_direct_writepage_anon_s 501 $total_direct_writepage_anon_sync += $stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_ANON_SYNC};
523 $total_direct_writepage_file_a 502 $total_direct_writepage_file_async += $stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_FILE_ASYNC};
524 503
525 $total_direct_writepage_anon_a 504 $total_direct_writepage_anon_async += $stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_ANON_ASYNC};
526 505
527 my $index = 0; 506 my $index = 0;
528 my $this_reclaim_delay = 0; 507 my $this_reclaim_delay = 0;
529 while (defined $stats{$process 508 while (defined $stats{$process_pid}->{HIGH_DIRECT_RECLAIM_LATENCY}[$index]) {
530 my ($dummy, $latency) 509 my ($dummy, $latency) = split(/-/, $stats{$process_pid}->{HIGH_DIRECT_RECLAIM_LATENCY}[$index]);
531 $this_reclaim_delay += 510 $this_reclaim_delay += $latency;
532 $index++; 511 $index++;
533 } 512 }
534 513
535 printf("%-" . $max_strlen . "s 514 printf("%-" . $max_strlen . "s %8d %10d %8u %8u %8u %8u %8.3f",
536 $process_pid, 515 $process_pid,
537 $stats{$process_pid}-> 516 $stats{$process_pid}->{MM_VMSCAN_DIRECT_RECLAIM_BEGIN},
538 $stats{$process_pid}-> 517 $stats{$process_pid}->{MM_VMSCAN_WAKEUP_KSWAPD},
539 $stats{$process_pid}-> 518 $stats{$process_pid}->{HIGH_NR_SCANNED},
540 $stats{$process_pid}-> <<
541 $stats{$process_pid}-> <<
542 $stats{$process_pid}-> 519 $stats{$process_pid}->{HIGH_NR_RECLAIMED},
543 $stats{$process_pid}-> <<
544 $stats{$process_pid}-> <<
545 $stats{$process_pid}-> 520 $stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_FILE_SYNC} + $stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_ANON_SYNC},
546 $stats{$process_pid}-> 521 $stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_FILE_ASYNC} + $stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_ANON_ASYNC},
547 $this_reclaim_delay / 522 $this_reclaim_delay / 1000);
548 523
549 if ($stats{$process_pid}->{MM_ 524 if ($stats{$process_pid}->{MM_VMSCAN_DIRECT_RECLAIM_BEGIN}) {
550 print " "; 525 print " ";
551 for (my $order = 0; $o 526 for (my $order = 0; $order < 20; $order++) {
552 my $count = $s 527 my $count = $stats{$process_pid}->{MM_VMSCAN_DIRECT_RECLAIM_BEGIN_PERORDER}[$order];
553 if ($count != 528 if ($count != 0) {
554 print 529 print "direct-$order=$count ";
555 } 530 }
556 } 531 }
557 } 532 }
558 if ($stats{$process_pid}->{MM_ 533 if ($stats{$process_pid}->{MM_VMSCAN_WAKEUP_KSWAPD}) {
559 print " "; 534 print " ";
560 for (my $order = 0; $o 535 for (my $order = 0; $order < 20; $order++) {
561 my $count = $s 536 my $count = $stats{$process_pid}->{MM_VMSCAN_WAKEUP_KSWAPD_PERORDER}[$order];
562 if ($count != 537 if ($count != 0) {
563 print 538 print "wakeup-$order=$count ";
564 } 539 }
565 } 540 }
566 } 541 }
>> 542 if ($stats{$process_pid}->{HIGH_NR_CONTIG_DIRTY}) {
>> 543 print " ";
>> 544 my $count = $stats{$process_pid}->{HIGH_NR_CONTIG_DIRTY};
>> 545 if ($count != 0) {
>> 546 print "contig-dirty=$count ";
>> 547 }
>> 548 }
567 549
568 print "\n"; 550 print "\n";
569 } 551 }
570 552
571 # Print out kswapd activity 553 # Print out kswapd activity
572 printf("\n"); 554 printf("\n");
573 printf("%-" . $max_strlen . "s %8s %10 555 printf("%-" . $max_strlen . "s %8s %10s %8s %8s %8s %8s\n", "Kswapd", "Kswapd", "Order", "Pages", "Pages", "Pages", "Pages");
574 printf("%-" . $max_strlen . "s %8s %10 556 printf("%-" . $max_strlen . "s %8s %10s %8s %8s %8s %8s\n", "Instance", "Wakeups", "Re-wakeup", "Scanned", "Rclmed", "Sync-IO", "ASync-IO");
575 foreach $process_pid (keys %stats) { 557 foreach $process_pid (keys %stats) {
576 558
577 if (!$stats{$process_pid}->{MM 559 if (!$stats{$process_pid}->{MM_VMSCAN_KSWAPD_WAKE}) {
578 next; 560 next;
579 } 561 }
580 562
581 $total_kswapd_wake += $stats{$ 563 $total_kswapd_wake += $stats{$process_pid}->{MM_VMSCAN_KSWAPD_WAKE};
582 $total_kswapd_nr_scanned += $s 564 $total_kswapd_nr_scanned += $stats{$process_pid}->{HIGH_NR_SCANNED};
583 $total_kswapd_nr_file_scanned <<
584 $total_kswapd_nr_anon_scanned <<
585 $total_kswapd_nr_reclaimed += 565 $total_kswapd_nr_reclaimed += $stats{$process_pid}->{HIGH_NR_RECLAIMED};
586 $total_kswapd_nr_file_reclaime <<
587 $total_kswapd_nr_anon_reclaime <<
588 $total_kswapd_writepage_file_s 566 $total_kswapd_writepage_file_sync += $stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_FILE_SYNC};
589 $total_kswapd_writepage_anon_s 567 $total_kswapd_writepage_anon_sync += $stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_ANON_SYNC};
590 $total_kswapd_writepage_file_a 568 $total_kswapd_writepage_file_async += $stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_FILE_ASYNC};
591 $total_kswapd_writepage_anon_a 569 $total_kswapd_writepage_anon_async += $stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_ANON_ASYNC};
592 570
593 printf("%-" . $max_strlen . "s 571 printf("%-" . $max_strlen . "s %8d %10d %8u %8u %8i %8u",
594 $process_pid, 572 $process_pid,
595 $stats{$process_pid}-> 573 $stats{$process_pid}->{MM_VMSCAN_KSWAPD_WAKE},
596 $stats{$process_pid}-> 574 $stats{$process_pid}->{HIGH_KSWAPD_REWAKEUP},
597 $stats{$process_pid}-> 575 $stats{$process_pid}->{HIGH_NR_SCANNED},
598 $stats{$process_pid}-> <<
599 $stats{$process_pid}-> <<
600 $stats{$process_pid}-> 576 $stats{$process_pid}->{HIGH_NR_RECLAIMED},
601 $stats{$process_pid}-> <<
602 $stats{$process_pid}-> <<
603 $stats{$process_pid}-> 577 $stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_FILE_SYNC} + $stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_ANON_SYNC},
604 $stats{$process_pid}-> 578 $stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_FILE_ASYNC} + $stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_ANON_ASYNC});
605 579
606 if ($stats{$process_pid}->{MM_ 580 if ($stats{$process_pid}->{MM_VMSCAN_KSWAPD_WAKE}) {
607 print " "; 581 print " ";
608 for (my $order = 0; $o 582 for (my $order = 0; $order < 20; $order++) {
609 my $count = $s 583 my $count = $stats{$process_pid}->{MM_VMSCAN_KSWAPD_WAKE_PERORDER}[$order];
610 if ($count != 584 if ($count != 0) {
611 print 585 print "wake-$order=$count ";
612 } 586 }
613 } 587 }
614 } 588 }
615 if ($stats{$process_pid}->{HIG 589 if ($stats{$process_pid}->{HIGH_KSWAPD_REWAKEUP}) {
616 print " "; 590 print " ";
617 for (my $order = 0; $o 591 for (my $order = 0; $order < 20; $order++) {
618 my $count = $s 592 my $count = $stats{$process_pid}->{HIGH_KSWAPD_REWAKEUP_PERORDER}[$order];
619 if ($count != 593 if ($count != 0) {
620 print 594 print "rewake-$order=$count ";
621 } 595 }
622 } 596 }
623 } 597 }
624 printf("\n"); 598 printf("\n");
625 } 599 }
626 600
627 # Print out summaries 601 # Print out summaries
628 $total_direct_latency /= 1000; 602 $total_direct_latency /= 1000;
629 $total_kswapd_latency /= 1000; 603 $total_kswapd_latency /= 1000;
630 print "\nSummary\n"; 604 print "\nSummary\n";
631 print "Direct reclaims: 605 print "Direct reclaims: $total_direct_reclaim\n";
632 print "Direct reclaim pages scanned: 606 print "Direct reclaim pages scanned: $total_direct_nr_scanned\n";
633 print "Direct reclaim file pages scann <<
634 print "Direct reclaim anon pages scann <<
635 print "Direct reclaim pages reclaimed: 607 print "Direct reclaim pages reclaimed: $total_direct_nr_reclaimed\n";
636 print "Direct reclaim file pages recla <<
637 print "Direct reclaim anon pages recla <<
638 print "Direct reclaim write file sync 608 print "Direct reclaim write file sync I/O: $total_direct_writepage_file_sync\n";
639 print "Direct reclaim write anon sync 609 print "Direct reclaim write anon sync I/O: $total_direct_writepage_anon_sync\n";
640 print "Direct reclaim write file async 610 print "Direct reclaim write file async I/O: $total_direct_writepage_file_async\n";
641 print "Direct reclaim write anon async 611 print "Direct reclaim write anon async I/O: $total_direct_writepage_anon_async\n";
642 print "Wake kswapd requests: 612 print "Wake kswapd requests: $total_wakeup_kswapd\n";
643 printf "Time stalled direct reclaim: 613 printf "Time stalled direct reclaim: %-1.2f seconds\n", $total_direct_latency;
644 print "\n"; 614 print "\n";
645 print "Kswapd wakeups: 615 print "Kswapd wakeups: $total_kswapd_wake\n";
646 print "Kswapd pages scanned: 616 print "Kswapd pages scanned: $total_kswapd_nr_scanned\n";
647 print "Kswapd file pages scanned: <<
648 print "Kswapd anon pages scanned: <<
649 print "Kswapd pages reclaimed: 617 print "Kswapd pages reclaimed: $total_kswapd_nr_reclaimed\n";
650 print "Kswapd file pages reclaimed: <<
651 print "Kswapd anon pages reclaimed: <<
652 print "Kswapd reclaim write file sync 618 print "Kswapd reclaim write file sync I/O: $total_kswapd_writepage_file_sync\n";
653 print "Kswapd reclaim write anon sync 619 print "Kswapd reclaim write anon sync I/O: $total_kswapd_writepage_anon_sync\n";
654 print "Kswapd reclaim write file async 620 print "Kswapd reclaim write file async I/O: $total_kswapd_writepage_file_async\n";
655 print "Kswapd reclaim write anon async 621 print "Kswapd reclaim write anon async I/O: $total_kswapd_writepage_anon_async\n";
656 printf "Time kswapd awake: 622 printf "Time kswapd awake: %-1.2f seconds\n", $total_kswapd_latency;
657 } 623 }
658 624
659 sub aggregate_perprocesspid() { 625 sub aggregate_perprocesspid() {
660 my $process_pid; 626 my $process_pid;
661 my $process; 627 my $process;
662 undef %perprocess; 628 undef %perprocess;
663 629
664 foreach $process_pid (keys %perprocess 630 foreach $process_pid (keys %perprocesspid) {
665 $process = $process_pid; 631 $process = $process_pid;
666 $process =~ s/-([0-9])*$//; 632 $process =~ s/-([0-9])*$//;
667 if ($process eq '') { 633 if ($process eq '') {
668 $process = "NO_PROCESS 634 $process = "NO_PROCESS_NAME";
669 } 635 }
670 636
671 $perprocess{$process}->{MM_VMS 637 $perprocess{$process}->{MM_VMSCAN_DIRECT_RECLAIM_BEGIN} += $perprocesspid{$process_pid}->{MM_VMSCAN_DIRECT_RECLAIM_BEGIN};
672 $perprocess{$process}->{MM_VMS 638 $perprocess{$process}->{MM_VMSCAN_KSWAPD_WAKE} += $perprocesspid{$process_pid}->{MM_VMSCAN_KSWAPD_WAKE};
673 $perprocess{$process}->{MM_VMS 639 $perprocess{$process}->{MM_VMSCAN_WAKEUP_KSWAPD} += $perprocesspid{$process_pid}->{MM_VMSCAN_WAKEUP_KSWAPD};
674 $perprocess{$process}->{HIGH_K 640 $perprocess{$process}->{HIGH_KSWAPD_REWAKEUP} += $perprocesspid{$process_pid}->{HIGH_KSWAPD_REWAKEUP};
675 $perprocess{$process}->{HIGH_N 641 $perprocess{$process}->{HIGH_NR_SCANNED} += $perprocesspid{$process_pid}->{HIGH_NR_SCANNED};
676 $perprocess{$process}->{HIGH_N <<
677 $perprocess{$process}->{HIGH_N <<
678 $perprocess{$process}->{HIGH_N 642 $perprocess{$process}->{HIGH_NR_RECLAIMED} += $perprocesspid{$process_pid}->{HIGH_NR_RECLAIMED};
679 $perprocess{$process}->{HIGH_N <<
680 $perprocess{$process}->{HIGH_N <<
681 $perprocess{$process}->{MM_VMS 643 $perprocess{$process}->{MM_VMSCAN_WRITEPAGE_FILE_SYNC} += $perprocesspid{$process_pid}->{MM_VMSCAN_WRITEPAGE_FILE_SYNC};
682 $perprocess{$process}->{MM_VMS 644 $perprocess{$process}->{MM_VMSCAN_WRITEPAGE_ANON_SYNC} += $perprocesspid{$process_pid}->{MM_VMSCAN_WRITEPAGE_ANON_SYNC};
683 $perprocess{$process}->{MM_VMS 645 $perprocess{$process}->{MM_VMSCAN_WRITEPAGE_FILE_ASYNC} += $perprocesspid{$process_pid}->{MM_VMSCAN_WRITEPAGE_FILE_ASYNC};
684 $perprocess{$process}->{MM_VMS 646 $perprocess{$process}->{MM_VMSCAN_WRITEPAGE_ANON_ASYNC} += $perprocesspid{$process_pid}->{MM_VMSCAN_WRITEPAGE_ANON_ASYNC};
685 647
686 for (my $order = 0; $order < 2 648 for (my $order = 0; $order < 20; $order++) {
687 $perprocess{$process}- 649 $perprocess{$process}->{MM_VMSCAN_DIRECT_RECLAIM_BEGIN_PERORDER}[$order] += $perprocesspid{$process_pid}->{MM_VMSCAN_DIRECT_RECLAIM_BEGIN_PERORDER}[$order];
688 $perprocess{$process}- 650 $perprocess{$process}->{MM_VMSCAN_WAKEUP_KSWAPD_PERORDER}[$order] += $perprocesspid{$process_pid}->{MM_VMSCAN_WAKEUP_KSWAPD_PERORDER}[$order];
689 $perprocess{$process}- 651 $perprocess{$process}->{MM_VMSCAN_KSWAPD_WAKE_PERORDER}[$order] += $perprocesspid{$process_pid}->{MM_VMSCAN_KSWAPD_WAKE_PERORDER}[$order];
690 652
691 } 653 }
692 654
693 # Aggregate direct reclaim lat 655 # Aggregate direct reclaim latencies
694 my $wr_index = $perprocess{$pr 656 my $wr_index = $perprocess{$process}->{MM_VMSCAN_DIRECT_RECLAIM_END};
695 my $rd_index = 0; 657 my $rd_index = 0;
696 while (defined $perprocesspid{ 658 while (defined $perprocesspid{$process_pid}->{HIGH_DIRECT_RECLAIM_LATENCY}[$rd_index]) {
697 $perprocess{$process}- 659 $perprocess{$process}->{HIGH_DIRECT_RECLAIM_LATENCY}[$wr_index] = $perprocesspid{$process_pid}->{HIGH_DIRECT_RECLAIM_LATENCY}[$rd_index];
698 $rd_index++; 660 $rd_index++;
699 $wr_index++; 661 $wr_index++;
700 } 662 }
701 $perprocess{$process}->{MM_VMS 663 $perprocess{$process}->{MM_VMSCAN_DIRECT_RECLAIM_END} = $wr_index;
702 664
703 # Aggregate kswapd latencies 665 # Aggregate kswapd latencies
704 my $wr_index = $perprocess{$pr 666 my $wr_index = $perprocess{$process}->{MM_VMSCAN_KSWAPD_SLEEP};
705 my $rd_index = 0; 667 my $rd_index = 0;
706 while (defined $perprocesspid{ 668 while (defined $perprocesspid{$process_pid}->{HIGH_KSWAPD_LATENCY}[$rd_index]) {
707 $perprocess{$process}- 669 $perprocess{$process}->{HIGH_KSWAPD_LATENCY}[$wr_index] = $perprocesspid{$process_pid}->{HIGH_KSWAPD_LATENCY}[$rd_index];
708 $rd_index++; 670 $rd_index++;
709 $wr_index++; 671 $wr_index++;
710 } 672 }
711 $perprocess{$process}->{MM_VMS 673 $perprocess{$process}->{MM_VMSCAN_DIRECT_RECLAIM_END} = $wr_index;
712 } 674 }
713 } 675 }
714 676
715 sub report() { 677 sub report() {
716 if (!$opt_ignorepid) { 678 if (!$opt_ignorepid) {
717 dump_stats(\%perprocesspid); 679 dump_stats(\%perprocesspid);
718 } else { 680 } else {
719 aggregate_perprocesspid(); 681 aggregate_perprocesspid();
720 dump_stats(\%perprocess); 682 dump_stats(\%perprocess);
721 } 683 }
722 } 684 }
723 685
724 # Process events or signals until neither is a 686 # Process events or signals until neither is available
725 sub signal_loop() { 687 sub signal_loop() {
726 my $sigint_processed; 688 my $sigint_processed;
727 do { 689 do {
728 $sigint_processed = 0; 690 $sigint_processed = 0;
729 process_events(); 691 process_events();
730 692
731 # Handle pending signals if an 693 # Handle pending signals if any
732 if ($sigint_pending) { 694 if ($sigint_pending) {
733 my $current_time = tim 695 my $current_time = time;
734 696
735 if ($sigint_exit) { 697 if ($sigint_exit) {
736 print "Receive 698 print "Received exit signal\n";
737 $sigint_pendin 699 $sigint_pending = 0;
738 } 700 }
739 if ($sigint_report) { 701 if ($sigint_report) {
740 if ($current_t 702 if ($current_time >= $sigint_received + 2) {
741 report 703 report();
742 $sigin 704 $sigint_report = 0;
743 $sigin 705 $sigint_pending = 0;
744 $sigin 706 $sigint_processed = 1;
745 } 707 }
746 } 708 }
747 } 709 }
748 } while ($sigint_pending || $sigint_pr 710 } while ($sigint_pending || $sigint_processed);
749 } 711 }
750 712
751 signal_loop(); 713 signal_loop();
752 report(); 714 report();
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