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systemtap /
examples /
profiling /
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Name
Size
Permission
Action
container_check.meta
1.04
KB
-rw-r--r--
container_check.stp
5.64
KB
-rwxr-xr-x
errno.meta
456
B
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errno.stp
970
B
-rwxr-xr-x
fileline-profile.meta
783
B
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fileline-profile.stp
1.19
KB
-rwxr-xr-x
fntimes.meta
512
B
-rw-r--r--
fntimes.stp
870
B
-rwxr-xr-x
fntimes.txt
1.34
KB
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functioncallcount.meta
649
B
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functioncallcount.stp
490
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functioncallcount.tcl
399
B
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graphcall.stp
534
B
-rwxr-xr-x
ioctl_handler.meta
1.18
KB
-rw-r--r--
ioctl_handler.stp
801
B
-rwxr-xr-x
latencytap.meta
877
B
-rw-r--r--
latencytap.stp
11.91
KB
-rwxr-xr-x
latencytap.tcl
140
B
-rw-r--r--
latencytap.txt
2.05
KB
-rw-r--r--
linetimes.meta
688
B
-rw-r--r--
linetimes.stp
1.57
KB
-rwxr-xr-x
linetimes.txt
13.61
KB
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perf.meta
578
B
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perf.stp
1.89
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-rwxr-xr-x
perf.tcl
166
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periodic.meta
895
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periodic.stp
2.56
KB
-rwxr-xr-x
pf2.meta
420
B
-rw-r--r--
pf2.stp
370
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-rwxr-xr-x
pf2.txt
406
B
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pf3.meta
439
B
-rw-r--r--
pf3.stp
992
B
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pf3.txt
489
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pf4.meta
471
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pf4.stp
952
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pf4.tcl
79
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pf4.txt
754
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sched_switch.meta
780
B
-rw-r--r--
sched_switch.stp
2.08
KB
-rwxr-xr-x
syscallerrorsbypid.meta
1.04
KB
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syscallerrorsbypid.stp
936
B
-rwxr-xr-x
syscalllatency.meta
1.05
KB
-rw-r--r--
syscalllatency.stp
981
B
-rwxr-xr-x
syscallsbypid.meta
1020
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syscallsbypid.stp
780
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thread-times.meta
384
B
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thread-times.stp
1.21
KB
-rwxr-xr-x
thread-times.txt
1009
B
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timeout.meta
728
B
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timeout.stp
2.7
KB
-rwxr-xr-x
topsys.meta
446
B
-rw-r--r--
topsys.stp
736
B
-rwxr-xr-x
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Code Editor : linetimes.stp
#!/usr/bin/stap # # Copyright (C) 2010-2015 Red Hat, Inc. # Written by William Cohen <wcohen@redhat.com> # # The linetimes.stp script takes two arguments: where to find the function # and the function name. linetimes.stp will instrument each line in the # function. It will print out the number of times that the function is # called, a table with the average and maximum time each line takes, # and control flow information when the script exits. # # For example all the lines of the do_unlinkat function: # # stap linetimes.stp kernel do_unlinkat global calls, times, last_pp, region, cfg probe $1.function(@2).call { calls <<< 1 } probe $1.function(@2).return { t = gettimeofday_us() s = times[tid()] if (s) { e = t - s region[last_pp[tid()]] <<< e cfg[last_pp[tid()], pp()] <<< 1 } delete times[tid()] delete last_pp[tid()] } probe $1.statement(@2 "@*:*") { t = gettimeofday_us() s = times[tid()] if (s) { e = t - s region[last_pp[tid()]] <<< e cfg[last_pp[tid()], pp()] <<< 1 } times[tid()] = t last_pp[tid()] = pp() } probe end { printf("\n%s %s call count: %d\n", @1, @2, @count(calls)); printf("\n%-58s %10s %10s\n", "region", "avg(us)", "max(us)"); foreach (p+ in region) { printf("%-58s %10d %10d\n", p, @avg(region[p]), @max(region[p])); } printf("\n\ncontrol flow graph information\n") printf("from\n\tto\n=======================\n") foreach ([src+] in region) { printf("%-s\n", src) foreach ([s,dest+] in cfg[src,*]) { # slice for all dest's printf("\t%-s %d\n", dest, @count(cfg[src,dest])); } } }
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