1 #!/bin/bash 1 #!/bin/bash
2 # SPDX-License-Identifier: GPL-2.0+ 2 # SPDX-License-Identifier: GPL-2.0+
3 # 3 #
4 # Analyze a given results directory for rcusca 4 # Analyze a given results directory for rcuscale scalability measurements.
5 # 5 #
6 # Usage: kvm-recheck-rcuscale.sh resdir 6 # Usage: kvm-recheck-rcuscale.sh resdir
7 # 7 #
8 # Copyright (C) IBM Corporation, 2016 8 # Copyright (C) IBM Corporation, 2016
9 # 9 #
10 # Authors: Paul E. McKenney <paulmck@linux.ibm. 10 # Authors: Paul E. McKenney <paulmck@linux.ibm.com>
11 11
12 i="$1" 12 i="$1"
13 if test -d "$i" -a -r "$i" 13 if test -d "$i" -a -r "$i"
14 then 14 then
15 : 15 :
16 else 16 else
17 echo Unreadable results directory: $i 17 echo Unreadable results directory: $i
18 exit 1 18 exit 1
19 fi 19 fi
20 PATH=`pwd`/tools/testing/selftests/rcutorture/ 20 PATH=`pwd`/tools/testing/selftests/rcutorture/bin:$PATH; export PATH
21 . functions.sh 21 . functions.sh
22 22
23 if kvm-recheck-rcuscale-ftrace.sh $i 23 if kvm-recheck-rcuscale-ftrace.sh $i
24 then 24 then
25 # ftrace data was successfully analyze 25 # ftrace data was successfully analyzed, call it good!
26 exit 0 26 exit 0
27 fi 27 fi
28 28
29 configfile=`echo $i | sed -e 's/^.*\///'` 29 configfile=`echo $i | sed -e 's/^.*\///'`
30 30
31 sed -e 's/^\[[^]]*]//' < $i/console.log | 31 sed -e 's/^\[[^]]*]//' < $i/console.log |
32 awk ' 32 awk '
33 /-scale: .* gps: .* batches:/ { 33 /-scale: .* gps: .* batches:/ {
34 ngps = $9; 34 ngps = $9;
35 nbatches = 1; 35 nbatches = 1;
36 } 36 }
37 37
38 /-scale: .*writer-duration/ { 38 /-scale: .*writer-duration/ {
39 gptimes[++n] = $5 / 1000.; 39 gptimes[++n] = $5 / 1000.;
40 sum += $5 / 1000.; 40 sum += $5 / 1000.;
41 } 41 }
42 42
43 /rcu_scale: Grace-period kthread CPU time/ { 43 /rcu_scale: Grace-period kthread CPU time/ {
44 cputime = $6; 44 cputime = $6;
45 } 45 }
46 46
47 END { 47 END {
48 newNR = asort(gptimes); 48 newNR = asort(gptimes);
49 if (newNR <= 0) { 49 if (newNR <= 0) {
50 print "No rcuscale records fou 50 print "No rcuscale records found???"
51 exit; 51 exit;
52 } 52 }
53 pct50 = int(newNR * 50 / 100); 53 pct50 = int(newNR * 50 / 100);
54 if (pct50 < 1) 54 if (pct50 < 1)
55 pct50 = 1; 55 pct50 = 1;
56 pct90 = int(newNR * 90 / 100); 56 pct90 = int(newNR * 90 / 100);
57 if (pct90 < 1) 57 if (pct90 < 1)
58 pct90 = 1; 58 pct90 = 1;
59 pct99 = int(newNR * 99 / 100); 59 pct99 = int(newNR * 99 / 100);
60 if (pct99 < 1) 60 if (pct99 < 1)
61 pct99 = 1; 61 pct99 = 1;
62 div = 10 ** int(log(gptimes[pct90]) / 62 div = 10 ** int(log(gptimes[pct90]) / log(10) + .5) / 100;
63 print "Histogram bucket size: " div; 63 print "Histogram bucket size: " div;
64 last = gptimes[1] - 10; 64 last = gptimes[1] - 10;
65 count = 0; 65 count = 0;
66 for (i = 1; i <= newNR; i++) { 66 for (i = 1; i <= newNR; i++) {
67 current = div * int(gptimes[i] 67 current = div * int(gptimes[i] / div);
68 if (last == current) { 68 if (last == current) {
69 count++; 69 count++;
70 } else { 70 } else {
71 if (count > 0) 71 if (count > 0)
72 print last, co 72 print last, count;
73 count = 1; 73 count = 1;
74 last = current; 74 last = current;
75 } 75 }
76 } 76 }
77 if (count > 0) 77 if (count > 0)
78 print last, count; 78 print last, count;
79 print "Average grace-period duration: 79 print "Average grace-period duration: " sum / newNR " microseconds";
80 print "Minimum grace-period duration: 80 print "Minimum grace-period duration: " gptimes[1];
81 print "50th percentile grace-period du 81 print "50th percentile grace-period duration: " gptimes[pct50];
82 print "90th percentile grace-period du 82 print "90th percentile grace-period duration: " gptimes[pct90];
83 print "99th percentile grace-period du 83 print "99th percentile grace-period duration: " gptimes[pct99];
84 print "Maximum grace-period duration: 84 print "Maximum grace-period duration: " gptimes[newNR];
85 if (cputime != "") 85 if (cputime != "")
86 cpustr = " CPU: " cputime; 86 cpustr = " CPU: " cputime;
87 print "Grace periods: " ngps + 0 " Bat 87 print "Grace periods: " ngps + 0 " Batches: " nbatches + 0 " Ratio: " ngps / nbatches cpustr;
88 print "Computed from rcuscale printk o 88 print "Computed from rcuscale printk output.";
89 }' 89 }'
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