1 #!/usr/bin/perl -w
2 # SPDX-License-Identifier: GPL-2.0-only
3 # (c) 2009, Tom Zanussi <tzanussi@gmail.com>
4
5 # Display r/w activity for all processes
6
7 # The common_* event handler fields are the most useful fields common to
8 # all events. They don't necessarily correspond to the 'common_*' fields
9 # in the status files. Those fields not available as handler params can
10 # be retrieved via script functions of the form get_common_*().
11
12 use 5.010000;
13 use strict;
14 use warnings;
15
16 use lib "$ENV{'PERF_EXEC_PATH'}/scripts/perl/Perf-Trace-Util/lib";
17 use lib "./Perf-Trace-Util/lib";
18 use Perf::Trace::Core;
19 use Perf::Trace::Util;
20
21 my %reads;
22 my %writes;
23
24 sub syscalls::sys_exit_read
25 {
26 my ($event_name, $context, $common_cpu, $common_secs, $common_nsecs,
27 $common_pid, $common_comm, $common_callchain,
28 $nr, $ret) = @_;
29
30 if ($ret > 0) {
31 $reads{$common_pid}{bytes_read} += $ret;
32 } else {
33 if (!defined ($reads{$common_pid}{bytes_read})) {
34 $reads{$common_pid}{bytes_read} = 0;
35 }
36 $reads{$common_pid}{errors}{$ret}++;
37 }
38 }
39
40 sub syscalls::sys_enter_read
41 {
42 my ($event_name, $context, $common_cpu, $common_secs, $common_nsecs,
43 $common_pid, $common_comm, $common_callchain,
44 $nr, $fd, $buf, $count) = @_;
45
46 $reads{$common_pid}{bytes_requested} += $count;
47 $reads{$common_pid}{total_reads}++;
48 $reads{$common_pid}{comm} = $common_comm;
49 }
50
51 sub syscalls::sys_exit_write
52 {
53 my ($event_name, $context, $common_cpu, $common_secs, $common_nsecs,
54 $common_pid, $common_comm, $common_callchain,
55 $nr, $ret) = @_;
56
57 if ($ret <= 0) {
58 $writes{$common_pid}{errors}{$ret}++;
59 }
60 }
61
62 sub syscalls::sys_enter_write
63 {
64 my ($event_name, $context, $common_cpu, $common_secs, $common_nsecs,
65 $common_pid, $common_comm, $common_callchain,
66 $nr, $fd, $buf, $count) = @_;
67
68 $writes{$common_pid}{bytes_written} += $count;
69 $writes{$common_pid}{total_writes}++;
70 $writes{$common_pid}{comm} = $common_comm;
71 }
72
73 sub trace_end
74 {
75 printf("read counts by pid:\n\n");
76
77 printf("%6s %20s %10s %10s %10s\n", "pid", "comm",
78 "# reads", "bytes_requested", "bytes_read");
79 printf("%6s %-20s %10s %10s %10s\n", "------", "--------------------",
80 "-----------", "----------", "----------");
81
82 foreach my $pid (sort { ($reads{$b}{bytes_read} || 0) <=>
83 ($reads{$a}{bytes_read} || 0) } keys %reads) {
84 my $comm = $reads{$pid}{comm} || "";
85 my $total_reads = $reads{$pid}{total_reads} || 0;
86 my $bytes_requested = $reads{$pid}{bytes_requested} || 0;
87 my $bytes_read = $reads{$pid}{bytes_read} || 0;
88
89 printf("%6s %-20s %10s %10s %10s\n", $pid, $comm,
90 $total_reads, $bytes_requested, $bytes_read);
91 }
92
93 printf("\nfailed reads by pid:\n\n");
94
95 printf("%6s %20s %6s %10s\n", "pid", "comm", "error #", "# errors");
96 printf("%6s %20s %6s %10s\n", "------", "--------------------",
97 "------", "----------");
98
99 my @errcounts = ();
100
101 foreach my $pid (keys %reads) {
102 foreach my $error (keys %{$reads{$pid}{errors}}) {
103 my $comm = $reads{$pid}{comm} || "";
104 my $errcount = $reads{$pid}{errors}{$error} || 0;
105 push @errcounts, [$pid, $comm, $error, $errcount];
106 }
107 }
108
109 @errcounts = sort { $b->[3] <=> $a->[3] } @errcounts;
110
111 for my $i (0 .. $#errcounts) {
112 printf("%6d %-20s %6d %10s\n", $errcounts[$i][0],
113 $errcounts[$i][1], $errcounts[$i][2], $errcounts[$i][3]);
114 }
115
116 printf("\nwrite counts by pid:\n\n");
117
118 printf("%6s %20s %10s %10s\n", "pid", "comm",
119 "# writes", "bytes_written");
120 printf("%6s %-20s %10s %10s\n", "------", "--------------------",
121 "-----------", "----------");
122
123 foreach my $pid (sort { ($writes{$b}{bytes_written} || 0) <=>
124 ($writes{$a}{bytes_written} || 0)} keys %writes) {
125 my $comm = $writes{$pid}{comm} || "";
126 my $total_writes = $writes{$pid}{total_writes} || 0;
127 my $bytes_written = $writes{$pid}{bytes_written} || 0;
128
129 printf("%6s %-20s %10s %10s\n", $pid, $comm,
130 $total_writes, $bytes_written);
131 }
132
133 printf("\nfailed writes by pid:\n\n");
134
135 printf("%6s %20s %6s %10s\n", "pid", "comm", "error #", "# errors");
136 printf("%6s %20s %6s %10s\n", "------", "--------------------",
137 "------", "----------");
138
139 @errcounts = ();
140
141 foreach my $pid (keys %writes) {
142 foreach my $error (keys %{$writes{$pid}{errors}}) {
143 my $comm = $writes{$pid}{comm} || "";
144 my $errcount = $writes{$pid}{errors}{$error} || 0;
145 push @errcounts, [$pid, $comm, $error, $errcount];
146 }
147 }
148
149 @errcounts = sort { $b->[3] <=> $a->[3] } @errcounts;
150
151 for my $i (0 .. $#errcounts) {
152 printf("%6d %-20s %6d %10s\n", $errcounts[$i][0],
153 $errcounts[$i][1], $errcounts[$i][2], $errcounts[$i][3]);
154 }
155
156 print_unhandled();
157 }
158
159 my %unhandled;
160
161 sub print_unhandled
162 {
163 if ((scalar keys %unhandled) == 0) {
164 return;
165 }
166
167 print "\nunhandled events:\n\n";
168
169 printf("%-40s %10s\n", "event", "count");
170 printf("%-40s %10s\n", "----------------------------------------",
171 "-----------");
172
173 foreach my $event_name (keys %unhandled) {
174 printf("%-40s %10d\n", $event_name, $unhandled{$event_name});
175 }
176 }
177
178 sub trace_unhandled
179 {
180 my ($event_name, $context, $common_cpu, $common_secs, $common_nsecs,
181 $common_pid, $common_comm, $common_callchain) = @_;
182
183 $unhandled{$event_name}++;
184 }
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