15 Feb, 2013
3 commits
-
Add --skip-missing option for skipping symbols that cannot be used for
annotation. It's the case of kernel symbols that user doesn't have a
vmlinux image file.Signed-off-by: Namhyung Kim
Cc: Andi Kleen
Cc: Borislav Petkov
Cc: Ingo Molnar
Cc: Jiri Olsa
Cc: Paul Mackerras
Cc: Pekka Enberg
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1360227734-375-8-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo -
Basic implementation of perf annotate on GTK2. Currently only
shows first symbol. Add a new --gtk option to use it.Signed-off-by: Namhyung Kim
Cc: Andi Kleen
Cc: Borislav Petkov
Cc: Ingo Molnar
Cc: Jiri Olsa
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Pekka Enberg
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1360227734-375-2-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo -
When adding vmlinux file to build-id cache, it'd be fail since kallsyms
dso with a same build-id was already added by perf record.So one needs to remove the kallsyms first to add vmlinux into the cache.
Add --update option for doing it at once.Signed-off-by: Namhyung Kim
Cc: Andi Kleen
Cc: Borislav Petkov
Cc: Ingo Molnar
Cc: Jiri Olsa
Cc: Paul Mackerras
Cc: Pekka Enberg
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1360227734-375-5-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo
07 Feb, 2013
1 commit
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This patch adds per-processor socket count aggregation for system-wide
mode measurements. This is a useful mode to detect imbalance between
sockets.To enable this mode, use --aggr-socket in addition
to -a. (system-wide).The output includes the socket number and the number of online
processors on that socket. This is useful to gauge the amount of
aggregation.# ./perf stat -I 1000 -a --aggr-socket -e cycles sleep 2
# time socket cpus counts events
1.000097680 S0 4 5,788,785 cycles
2.000379943 S0 4 27,361,546 cycles
2.001167808 S0 4 818,275 cyclesSigned-off-by: Stephane Eranian
Cc: Andi Kleen
Cc: Ingo Molnar
Cc: Jiri Olsa
Cc: Namhyung Kim
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1360161962-9675-3-git-send-email-eranian@google.com
[ committer note: Added missing man page entry based on above comments ]
Signed-off-by: Arnaldo Carvalho de Melo
01 Feb, 2013
2 commits
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Add '-g/--group' option for showing event groups. For simplicity it is
currently not compatible with other options.$ perf evlist --group
{ref-cycles,cycles}$ perf evlist
ref-cycles
cyclesSuggested-by: Arnaldo Carvalho de Melo
Signed-off-by: Namhyung Kim
Cc: Ingo Molnar
Cc: Jiri Olsa
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Stephane Eranian
Link: http://lkml.kernel.org/r/1358845787-1350-20-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo -
Add --group option to enable event grouping. When enabled, all the
group members information will be shown together with the leader.$ perf report --group
...
# group: {ref-cycles,cycles}
# ========
#
# Samples: 7K of event 'anon group { ref-cycles, cycles }'
# Event count (approx.): 6876107743
#
# Overhead Command Shared Object Symbol
# ................ ....... ................. ..........................
#
99.84% 99.76% noploop noploop [.] main
0.07% 0.00% noploop ld-2.15.so [.] strcmp
0.03% 0.00% noploop [kernel.kallsyms] [k] timerqueue_del
0.03% 0.03% noploop [kernel.kallsyms] [k] sched_clock_cpu
0.02% 0.00% noploop [kernel.kallsyms] [k] account_user_time
0.01% 0.00% noploop [kernel.kallsyms] [k] __alloc_pages_nodemask
0.00% 0.00% noploop [kernel.kallsyms] [k] native_write_msr_safe
0.00% 0.11% noploop [kernel.kallsyms] [k] _raw_spin_lock
0.00% 0.06% noploop [kernel.kallsyms] [k] find_get_page
0.00% 0.02% noploop [kernel.kallsyms] [k] rcu_check_callbacks
0.00% 0.02% noploop [kernel.kallsyms] [k] __current_kernel_timeSigned-off-by: Namhyung Kim
Acked-by: Jiri Olsa
Cc: Ingo Molnar
Cc: Jiri Olsa
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Stephane Eranian
Link: http://lkml.kernel.org/r/1358845787-1350-18-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo
30 Jan, 2013
1 commit
-
This patch adds a new printing mode for perf stat. It allows interval
printing. That means perf stat can now print event deltas at regular
time interval. This is useful to detect phases in programs.The -I option enables interval printing. It expects an interval duration
in milliseconds. Minimum is 100ms. Once, activated perf stat prints
events deltas since last printout. All modes are supported.$ perf stat -I 1000 -e cycles noploop 10
noploop for 10 seconds
# time counts events
1.000109853 2,388,560,546 cycles
2.000262846 2,393,332,358 cycles
3.000354131 2,393,176,537 cycles
4.000439503 2,393,203,790 cycles
5.000527075 2,393,167,675 cycles
6.000609052 2,393,203,670 cycles
7.000691082 2,393,175,678 cyclesThe output format makes it easy to feed into a plotting program such as
gnuplot when the -I option is used in combination with the -x option:$ perf stat -x, -I 1000 -e cycles noploop 10
noploop for 10 seconds
1.000084113,2378775498,cycles
2.000245798,2391056897,cycles
3.000354445,2392089414,cycles
4.000459115,2390936603,cycles
5.000565341,2392108173,cyclesSigned-off-by: Stephane Eranian
Cc: Andi Kleen
Cc: Ingo Molnar
Cc: Jiri Olsa
Cc: Namhyung Kim
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1359460064-3060-3-git-send-email-eranian@google.com
Signed-off-by: Arnaldo Carvalho de Melo
25 Jan, 2013
3 commits
-
Sometimes a test is problematic for some reason and one wants to skip it,
for instance:[root@sandy ~]# perf test
1: vmlinux symtab matches kallsyms : Ok
2: detect open syscall event : Ok
3: detect open syscall event on all cpus : Ok
4: read samples using the mmap interface : Ok
5: parse events tests : Warning: bad op token {
Warning: bad op token {
Warning: bad op token {
Warning: bad op token {
Warning: bad op token {
Warning: function is_writable_pte not defined
Segmentation fault (core dumped)So now we can use -s/--skip while the problematic tests are being fixed,
allowing us to test all the other entries:[root@sandy ~]# perf test -s 5
1: vmlinux symtab matches kallsyms : Ok
2: detect open syscall event : Ok
3: detect open syscall event on all cpus : Ok
4: read samples using the mmap interface : Ok
5: parse events tests : Skip (user override)
6: x86 rdpmc test : Ok
7: Validate PERF_RECORD_* events & perf_sample fields : Ok
8: Test perf pmu format parsing : Ok
9: Test dso data interface : Ok
10: roundtrip evsel->name check : Ok
11: Check parsing of sched tracepoints fields : Ok
12: Generate and check syscalls:sys_enter_open event fields: Ok
13: struct perf_event_attr setup : Ok
14: Test matching and linking mutliple hists : Ok
15: Try 'use perf' in python, checking link problems : Ok
[root@sandy ~]#Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Jiri Olsa
Cc: Mike Galbraith
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Stephane Eranian
Link: http://lkml.kernel.org/n/tip-klzd8p57jzdryafqkmlppcb1@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo -
The tracepoints used by the workqueue-stats script no longer exist so
trying to run the script results in:# perf script record workqueue-stats
invalid or unsupported event: 'workqueue:workqueue_creation'
Run 'perf list' for a list of valid eventsSo remove the script until it can be reworked using the new workqueue
tracepoints.Signed-off-by: Tom Zanussi
Link: http://lkml.kernel.org/r/e7a7637d5df9df86887c3bff7683574665ec5360.1358527965.git.tom.zanussi@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo -
Add description of sort keys to the perf-report document and also add
missing cpu and srcline keys to the command line help string.Signed-off-by: Namhyung Kim
Acked-by: Jiri Olsa
Cc: David Ahern
Cc: Ingo Molnar
Cc: Jiri Olsa
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Stephane Eranian
Link: http://lkml.kernel.org/r/1356599507-14226-11-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo
24 Jan, 2013
1 commit
-
…/acme/linux into perf/core
Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:
. perf build-id cache now can show DSOs present in a perf.data file that are
not in the cache, to integrate with build-id servers being put in place by
organizations such as Fedora.. perf buildid-list -i an-elf-file-instead-of-a-perf.data is back showing its
build-id.. No need to do feature checks when doing a 'make tags'
. Fix some 'perf test' errors and make them use the tracepoint evsel constructor.
. perf top now shares more of the evsel config/creation routines with 'record',
paving the way for further integration like 'top' snapshots, etc.. perf top now supports DWARF callchains.
. perf evlist decodes sample_type and read_format, helping diagnose problems.
. Fix mmap limitations on 32-bit, fix from David Miller.
. perf diff fixes from Jiri Olsa.
. Ignore ABS symbols when loading data maps, fix from Namhyung Kim
. Hists improvements from Namhyung Kim
. Don't check configuration on make clean, from Namhyung Kim
. Fix dso__fprintf() print statement, from Stephane Eranian.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
14 Dec, 2012
1 commit
-
Pull trivial branch from Jiri Kosina:
"Usual stuff -- comment/printk typo fixes, documentation updates, dead
code elimination."* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (39 commits)
HOWTO: fix double words typo
x86 mtrr: fix comment typo in mtrr_bp_init
propagate name change to comments in kernel source
doc: Update the name of profiling based on sysfs
treewide: Fix typos in various drivers
treewide: Fix typos in various Kconfig
wireless: mwifiex: Fix typo in wireless/mwifiex driver
messages: i2o: Fix typo in messages/i2o
scripts/kernel-doc: check that non-void fcts describe their return value
Kernel-doc: Convention: Use a "Return" section to describe return values
radeon: Fix typo and copy/paste error in comments
doc: Remove unnecessary declarations from Documentation/accounting/getdelays.c
various: Fix spelling of "asynchronous" in comments.
Fix misspellings of "whether" in comments.
eisa: Fix spelling of "asynchronous".
various: Fix spelling of "registered" in comments.
doc: fix quite a few typos within Documentation
target: iscsi: fix comment typos in target/iscsi drivers
treewide: fix typo of "suport" in various comments and Kconfig
treewide: fix typo of "suppport" in various comments
...
12 Dec, 2012
1 commit
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Using struct perf_record_opts to specify how to configure the evsel
perf_event_attrs.This gets top closer to record in the way it sets up evsels, with the
aim of sharing more and more to the point that both will be a single
utility.In this direction top now uses the same callchain option parsing as
record and that brings DWARF callchains to top, something that was
already available for record.Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Jiri Olsa
Cc: Mike Galbraith
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Stephane Eranian
Link: http://lkml.kernel.org/n/tip-u03o0bsrqcjgskciso3pvsjr@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo
09 Dec, 2012
4 commits
-
This will allow to connect with services being put in place by distros such as
Fedora, where one can retrieve DSOs by their build-id.Example usage:
for buildid in $(perf buildid-cache --missing perf.data | cut -d' ' -f1) ; do
echo "trying to get $buildid"
wget -q https://darkserver.fedoraproject.org/buildids/$buildid
cat $buildid ; echo
rm -f $buildid
doneNow its just a matter of some porcelain to get the details provided by such a
service, retrieve the file and use 'perf buildid-cache --add $FILE' to insert
it in the cache, then use 'perf report' or 'annotate' that will find the
required files in the cache.More information about the darkserver service at:
https://darkserver.fedoraproject.org/
Cc: David Ahern
Cc: Frank Eigler
Cc: Frederic Weisbecker
Cc: Jiri Olsa
Cc: Kushal Das
Cc: Mark Wielaard
Cc: Mike Galbraith
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Stephane Eranian
Link: http://lkml.kernel.org/n/tip-6fuktuiyjn4jykxmt7c9f7xq@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo -
It seems not very useful, because it's possible and event more convenient to
lookup related symbol by name. Also the output value for both 'baseline' and
'new' data is quite apparent from diff output.And above all it complicates hist code factoring ;)
Ditching out PERF_HPP__DISPL column with related output functions.
Suggested-by: Arnaldo Carvalho de Melo
Signed-off-by: Jiri Olsa
Cc: Corey Ashford
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Ingo Molnar
Cc: Namhyung Kim
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Stephane Eranian
Link: http://lkml.kernel.org/r/20121206132228.GB1080@krava.brq.redhat.com
Signed-off-by: Arnaldo Carvalho de Melo -
Doing the same thing done in:
b059dee: perf tools: Don't check configuration on make clean
Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Jiri Olsa
Cc: Mike Galbraith
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Stephane Eranian
Link: http://lkml.kernel.org/n/tip-n2ni4riphpqxw7d6ziv1ndyc@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo -
Current perf build process checks various system configuration on
invocation to make. But this is not needed just for cleaning.To do that, move some of python related variables out of conditional
since 'clean' target needs them. Normal path should not be affected by
this.Signed-off-by: Namhyung Kim
Cc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1352867990-658-1-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo
03 Dec, 2012
1 commit
-
Fix typos in printk within various drivers.
Signed-off-by: Masanari Iida
Signed-off-by: Jiri Kosina
31 Oct, 2012
1 commit
-
Without defining ARCH=arm, building perf for Android ARM will fail,
because it needs architecture specific files.So add related relevant information to the android documentation.
Signed-off-by: Joonsoo Kim
Reviewed-by: Namhyung Kim
Cc: David Ahern
Cc: Ingo Molnar
Cc: Irina Tirdea
Cc: Jiri Olsa
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Pekka Enberg
Cc: Peter Zijlstra
Cc: Steven Rostedt
Link: http://lkml.kernel.org/r/1351518066-4791-1-git-send-email-js1304@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo
26 Oct, 2012
3 commits
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In order to measure kernel builds, one has to do some pre/post cleanup
work in order to do the repeat build.So provide --pre and --post command hooks to allow doing just that.
perf stat --repeat 10 --null --sync --pre 'make -s O=defconfig-build/clean' \
-- make -s -j64 O=defconfig-build/ bzImageSigned-off-by: Peter Zijlstra
Acked-by: Ingo Molnar
Cc: Stephane Eranian
Link: http://lkml.kernel.org/r/1350992414.13456.5.camel@twins
[ committer note: Added respective entries in Documentation/perf-stat.txt ]
Signed-off-by: Arnaldo Carvalho de Melo -
You may want to know where and how long a task is sleeping. A callchain
may be found in sched_switch and a time slice in stat_iowait, so I add
handler in perf inject for merging this events.My code saves sched_switch event for each process and when it meets
stat_iowait, it reports the sched_switch event, because this event
contains a correct callchain. By another words it replaces all
stat_iowait events on proper sched_switch events.I use the next sequence of commands for testing:
perf record -e sched:sched_stat_sleep -e sched:sched_switch \
-e sched:sched_process_exit -g -o ~/perf.data.raw \
~/test-program
perf inject -v -s -i ~/perf.data.raw -o ~/perf.data
perf report --stdio -i ~/perf.data
100.00% foo [kernel.kallsyms] [k] __schedule
|
--- __schedule
schedule
|
|--79.75%-- schedule_hrtimeout_range_clock
| schedule_hrtimeout_range
| poll_schedule_timeout
| do_select
| core_sys_select
| sys_select
| system_call_fastpath
| __select
| __libc_start_main
|
--20.25%-- do_nanosleep
hrtimer_nanosleep
sys_nanosleep
system_call_fastpath
__GI___libc_nanosleep
__libc_start_mainAnd here is test-program.c:
#include
#include
#includeint main()
{
struct timespec ts1;
struct timeval tv1;
int i;
long s;for (i = 0; i < 10; i++) {
ts1.tv_sec = 0;
ts1.tv_nsec = 10000000;
nanosleep(&ts1, NULL);tv1.tv_sec = 0;
tv1.tv_usec = 40000;
select(0, NULL, NULL, NULL,&tv1);
}
return 1;
}Signed-off-by: Andrew Vagin
Acked-by: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1344344165-369636-4-git-send-email-avagin@openvz.org
[ committer note: Made it use evsel->handler ]
Signed-off-by: Arnaldo Carvalho de Melo -
Before this patch "perf inject" can only handle data from pipe.
I want to use "perf inject" for reworking events. Look at my following patch.
v2: add information about new options in tools/perf/Documentation/
Signed-off-by: Andrew Vagin
Acked-by: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1344344165-369636-2-git-send-email-avagin@openvz.org
[ committer note: fixed it up to cope with 5852a44, 5ded57a, 002439e & f62d3f0 ]
Signed-off-by: Arnaldo Carvalho de Melo
25 Oct, 2012
3 commits
-
[root@sandy ~]# perf trace --sched --duration 0.100 --pid `pidof firefox`
17079.847 ( 0.009 ms): 17643 poll(ufds: 140037623086496, nfds: 11, timeout_msecs: 0) = 0 Timeout
17079.892 ( 0.010 ms): 17643 read(fd: 4, buf: 140038178943092, count: 4096 ) = -1 EAGAIN Resource temporarily unavailable
17079.921 ( 0.013 ms): 17643 poll(ufds: 140037623086496, nfds: 11, timeout_msecs: 0) = 0 Timeout
17079.949 ( 0.009 ms): 17643 read(fd: 4, buf: 140038178943092, count: 4096 ) = -1 EAGAIN Resource temporarily unavailable
^C
_____________________________________________________________________
__) Summary of events (__[ task - pid ] [ events ] [ ratio ] [ runtime ]
_____________________________________________________________________firefox - 17643 : 18013 [ 72.2% ] 359.110 ms
firefox - 17663 : 41 [ 0.2% ] 21.439 ms
firefox - 17664 : 6840 [ 27.4% ] 133.642 ms
firefox - 17667 : 46 [ 0.2% ] 0.682 ms
[root@sandy ~]#This is equivalent to the 'perf trace summary' subcomand in the tmp.perf/trace2
branch.Another example, setting a huge duration filter to get just a system
wide summary:[root@sandy ~]# perf trace --duration 10000.0 --sched
^C
_____________________________________________________________________
__) Summary of events (__[ task - pid ] [ events ] [ ratio ] [ runtime ]
_____________________________________________________________________scsi_eh_1 - 258 : 15 [ 0.0% ] 0.133 ms
kworker/0:1H - 322 : 13 [ 0.0% ] 0.032 ms
jbd2/dm-0-8 - 384 : 4 [ 0.0% ] 0.115 ms
flush-253:0 - 470 : 1 [ 0.0% ] 0.027 ms
firefox - 950 : 4783 [ 0.1% ] 24.863 ms
firefox - 992 : 1883 [ 0.1% ] 6.808 ms
firefox - 995 : 35 [ 0.0% ] 0.111 ms
ksoftirqd/6 - 4362 : 2 [ 0.0% ] 0.005 ms
ksoftirqd/7 - 4365 : 1 [ 0.0% ] 0.007 ms
Xorg - 4671 : 148 [ 0.0% ] 0.912 ms
gnome-settings- - 4846 : 14 [ 0.0% ] 0.086 ms
seahorse-daemon - 4847 : 14 [ 0.0% ] 0.092 ms
gnome-panel - 4875 : 46 [ 0.0% ] 0.159 ms
gnome-power-man - 4918 : 16 [ 0.0% ] 0.065 ms
gvfs-afc-volume - 4992 : 77 [ 0.0% ] 0.136 ms
gnome-screensav - 5114 : 24 [ 0.0% ] 0.128 ms
xchat - 8082 : 466 [ 0.0% ] 2.019 ms
synergyc - 8369 : 941 [ 0.0% ] 3.291 ms
synergyc - 8371 : 85 [ 0.0% ] 1.817 ms
jbd2/dm-4-8 - 9352 : 4 [ 0.0% ] 0.109 ms
rpcbind - 9786 : 3 [ 0.0% ] 0.017 ms
rtkit-daemon - 12802 : 10 [ 0.0% ] 0.038 ms
rtkit-daemon - 12803 : 8 [ 0.0% ] 0.000 ms
udisks-daemon - 13020 : 27 [ 0.0% ] 0.240 ms
kworker/7:0 - 14651 : 669 [ 0.0% ] 2.616 ms
kworker/5:1 - 16220 : 2 [ 0.0% ] 0.069 ms
kworker/4:0 - 19776 : 13 [ 0.0% ] 0.176 ms
openvpn - 20131 : 133 [ 0.0% ] 0.762 ms
plugin-containe - 20508 : 60658 [ 1.7% ] 131.153 ms
npviewer.bin - 20520 : 72208 [ 2.0% ] 138.945 ms
npviewer.bin - 20542 : 35 [ 0.0% ] 0.074 ms
npviewer.bin - 20543 : 30 [ 0.0% ] 0.074 ms
npviewer.bin - 20547 : 35 [ 0.0% ] 0.092 ms
npviewer.bin - 20552 : 35 [ 0.0% ] 0.093 ms
sshd - 20645 : 32 [ 0.0% ] 0.071 ms
npviewer.bin - 21053 : 35 [ 0.0% ] 0.074 ms
npviewer.bin - 21054 : 35 [ 0.0% ] 0.097 ms
kworker/0:2 - 21169 : 149 [ 0.0% ] 1.143 ms
kworker/3:0 - 22171 : 113 [ 0.0% ] 96.892 ms
flush-253:4 - 22410 : 1 [ 0.0% ] 0.028 ms
kworker/6:0 - 24581 : 25 [ 0.0% ] 0.275 ms
kworker/1:0 - 25572 : 4 [ 0.0% ] 0.103 ms
kworker/2:1 - 26299 : 138 [ 0.0% ] 1.440 ms
kworker/0:0 - 26325 : 1 [ 0.0% ] 0.003 ms
perf - 26330 : 3506967 [ 96.1% ] 6648.310 ms
[root@sandy ~]#Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Jiri Olsa
Cc: Mike Galbraith
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Stephane Eranian
Cc: Thomas Gleixner
Link: http://lkml.kernel.org/n/tip-mzuli0srnxyi1o029py6537x@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo -
There's a portion in the "perf list" output refering to the exact
specification of raw hardware events.Since this description is in the perf-list manpage, try to build and
install the man pages, warning the user when that is not possible
due to missing packages (xmlto and asciidoc).Signed-off-by: Borislav Petkov
Tested-by: Arnaldo Carvalho de Melo
Cc: Namhyung Kim
Link: http://lkml.kernel.org/n/tip-ij71ysszkdvz3fy3wr331bke@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo -
Example:
[acme@sandy linux]$ perf trace --duration 0.025 usleep 1
2.221 ( 0.958 ms): 6724 execve(arg0: 140733557168278, arg1: 140733557178768, arg2: 16134304, arg3: 140733557167840, arg4: 7955998171588342573, arg5: 6723) = -2
3.690 ( 1.443 ms): 6724 execve(arg0: 140733557168295, arg1: 140733557178768, arg2: 16134304, arg3: 140733557167840, arg4: 7955998171588342573, arg5: 6723) = 0
3.979 ( 0.048 ms): 6724 open(filename: 208733843841, flags: 0, mode: 1 ) = 3
4.071 ( 0.075 ms): 6724 open(filename: 139744419925673, flags: 0, mode: 0 ) = 3
4.318 ( 0.056 ms): 6724 nanosleep(rqtp: 140734030404608, rmtp: 0 ) = 0
[acme@sandy linux]$ perf trace --duration 0.100 usleep 1
1.143 ( 1.021 ms): 6726 execve(arg0: 140736323962279, arg1: 140736323972752, arg2: 34926752, arg3: 140736323961824, arg4: 7955998171588342573, arg5: 6725) = 0
[acme@sandy linux]$Cherry picked from tmp.perf/trace2 branch.
Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Jiri Olsa
Cc: Mike Galbraith
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Stephane Eranian
Cc: Thomas Gleixner
Link: http://lkml.kernel.org/n/tip-oslw2j2958we9qf0ctra4whd@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo
09 Oct, 2012
1 commit
-
Add documentation for cross-compiling on Android including:
() instructions on how to set the Android NDK environment
() how to cross-compile perf for Android
() how to install on an Android device/emulator, set the runtime
environment and run itSigned-off-by: Irina Tirdea
Cc: David Ahern
Cc: Ingo Molnar
Cc: Jiri Olsa
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Pekka Enberg
Cc: Peter Zijlstra
Cc: Steven Rostedt
Link: http://lkml.kernel.org/r/1349678613-7045-4-git-send-email-irina.tirdea@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo
06 Oct, 2012
6 commits
-
Adding -F option to display the formula for specified computation.
This is mainly to facilitate debugging, but can be useful anyway.
Signed-off-by: Jiri Olsa
Cc: Andi Kleen
Cc: Corey Ashford
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1349448287-18919-7-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo -
Adding -p option to show period values for both compared hist entries.
Showing hist column PERF_HPP__PERIOD and newly added hist column
PERF_HPP__PERIOD_BASELINE.Signed-off-by: Jiri Olsa
Cc: Andi Kleen
Cc: Corey Ashford
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1349448287-18919-6-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo -
Adding 'wdiff' as new computation way to compare hist entries.
If specified the 'Weighted diff' column is displayed with value 'd'
computed as:d = B->period * WEIGHT-A - A->period * WEIGHT-B
- A/B being matching hist entry from first/second file specified
(or perf.data/perf.data.old) respectively.
- period being the hist entry period value
- WEIGHT-A/WEIGHT-B being user suplied weights in the the '-c' option
behind ':' separator like '-c wdiff:1,2'.Signed-off-by: Jiri Olsa
Cc: Andi Kleen
Cc: Corey Ashford
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1349448287-18919-5-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo -
Adding support to sort hist entries based on the outcome of selected
computation. It's now possible to specify '+' as a first character of
'-c' option value to make such sort.Example:
$ perf diff -c ratio -b
# Event 'cache-misses'
#
# Baseline Ratio Shared Object Symbol
# ........ .............. ................. ................................
#
19.64% 0.69 [kernel.kallsyms] [k] clear_page
0.30% 0.17 [kernel.kallsyms] [k] mm_alloc
0.04% 0.20 [kernel.kallsyms] [k] kmem_cache_alloc$ perf diff -c +ratio -b
# Event 'cache-misses'
#
# Baseline Ratio Shared Object Symbol
# ........ .............. ................. ................................
#
19.64% 0.69 [kernel.kallsyms] [k] clear_page
0.04% 0.20 [kernel.kallsyms] [k] kmem_cache_alloc
0.30% 0.17 [kernel.kallsyms] [k] mm_allocSigned-off-by: Jiri Olsa
Cc: Andi Kleen
Cc: Corey Ashford
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1349448287-18919-4-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo -
Adding -c option to select computation method with the current 'Delta'
computation as default. Current possible values are of this option are:
'delta' and 'ratio'.Adding 'ratio' as new computation way to compare hist entries. If
specified the 'Ratio' column is displayed with value 'r' computed as:r = A->period / B->period
with:
- A/B being matching hist entry from first/second file specified
(or perf.data/perf.data.old) respectively.
- period being the hist entry period valueSigned-off-by: Jiri Olsa
Cc: Andi Kleen
Cc: Corey Ashford
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1349448287-18919-3-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo -
Adding -b option to perf diff command to display only entries with match
in the baseline.Signed-off-by: Jiri Olsa
Cc: Andi Kleen
Cc: Corey Ashford
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1349448287-18919-2-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo
27 Sep, 2012
1 commit
-
Initially should look loosely like the venerable 'strace' tool, but
using the infrastructure in the perf tools to allow tracing extra
targets:[acme@sandy linux]$ perf trace --hell
Error: unknown option `hell'usage: perf trace
-p, --pid trace events on existing process id
--tid trace events on existing thread id
--all-cpus system-wide collection from all CPUs
--cpu list of cpus to monitor
--no-inherit child tasks do not inherit counters
--mmap-pages number of mmap data pages
--uid user to profile[acme@sandy linux]$
Those should have the same semantics as when using with 'perf record'.
It gets stuck sometimes, but hey, it works sometimes too!
In time it should support perf.data based workloads, i.e. it should have
a:
-o filenameCommand line option that will produce a perf.data file that can then be
used with 'perf trace' or any of the other perf tools (script, report,
etc).It will also eventually have the set of functionalities described in the
previous 'trace' prototype by Thomas Gleixner:"Announcing a new utility: 'trace'"
http://lwn.net/Articles/415728/Also planned is to have some of the features suggested in the comments
of that LWN article.Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Jiri Olsa
Cc: Mike Galbraith
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Stephane Eranian
Cc: Steven Rostedt
Cc: Thomas Gleixner
Link: http://lkml.kernel.org/n/tip-v9x3q9rv4caxtox7wtjpchq5@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo
21 Sep, 2012
1 commit
-
Add 'perf kvm stat' support to analyze kvm vmexit/mmio/ioport smartly
Usage:
- kvm stat
run a command and gather performance counter statistics, it is the alias of
perf stat- trace kvm events:
perf kvm stat record, or, if other tracepoints are interesting as well, we
can append the events like this:
perf kvm stat record -e timer:* -aIf many guests are running, we can track the specified guest by using -p or
--pid, -a is used to track events generated by all guests.- show the result:
perf kvm stat reportThe output example is following:
13005
13059total 2 guests are running on the host
Then, track the guest whose pid is 13059:
^C[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.253 MB perf.data.guest (~11065 samples) ]See the vmexit events:
Analyze events for all VCPUs:
VM-EXIT Samples Samples% Time% Avg time
APIC_ACCESS 460 70.55% 0.01% 22.44us ( +- 1.75% )
HLT 93 14.26% 99.98% 832077.26us ( +- 10.42% )
EXTERNAL_INTERRUPT 64 9.82% 0.00% 35.35us ( +- 14.21% )
PENDING_INTERRUPT 24 3.68% 0.00% 9.29us ( +- 31.39% )
CR_ACCESS 7 1.07% 0.00% 8.12us ( +- 5.76% )
IO_INSTRUCTION 3 0.46% 0.00% 18.00us ( +- 11.79% )
EXCEPTION_NMI 1 0.15% 0.00% 5.83us ( +- -nan% )Total Samples:652, Total events handled time:77396109.80us.
See the mmio events:
Analyze events for all VCPUs:
MMIO Access Samples Samples% Time% Avg time
0xfee00380:W 387 84.31% 79.28% 8.29us ( +- 3.32% )
0xfee00300:W 24 5.23% 9.96% 16.79us ( +- 1.97% )
0xfee00300:R 24 5.23% 7.83% 13.20us ( +- 3.00% )
0xfee00310:W 24 5.23% 2.93% 4.94us ( +- 3.84% )Total Samples:459, Total events handled time:4044.59us.
See the ioport event:
Analyze events for all VCPUs:
IO Port Access Samples Samples% Time% Avg time
0xc050:POUT 3 100.00% 100.00% 13.75us ( +- 10.83% )
Total Samples:3, Total events handled time:41.26us.
And, --vcpu is used to track the specified vcpu and --key is used to sort the
result:Analyze events for VCPU 0:
VM-EXIT Samples Samples% Time% Avg time
HLT 27 13.85% 99.97% 405790.24us ( +- 12.70% )
EXTERNAL_INTERRUPT 13 6.67% 0.00% 27.94us ( +- 22.26% )
APIC_ACCESS 146 74.87% 0.03% 21.69us ( +- 2.91% )
IO_INSTRUCTION 2 1.03% 0.00% 17.77us ( +- 20.56% )
CR_ACCESS 2 1.03% 0.00% 8.55us ( +- 6.47% )
PENDING_INTERRUPT 5 2.56% 0.00% 6.27us ( +- 3.94% )Total Samples:195, Total events handled time:10959950.90us.
Signed-off-by: Dong Hao
Signed-off-by: Runzhen Wang
[ Dong Hao
Runzhen Wang :
- rebase it on current acme's tree
- fix the compiling-error on i386 ]
Signed-off-by: Xiao Guangrong
Acked-by: David Ahern
Cc: Avi Kivity
Cc: David Ahern
Cc: Ingo Molnar
Cc: Marcelo Tosatti
Cc: kvm@vger.kernel.org
Cc: Runzhen Wang
Link: http://lkml.kernel.org/r/1347870675-31495-4-git-send-email-haodong@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo
08 Sep, 2012
1 commit
-
Putting 'perf diff' command back on track with the 'latest'
evsel hists changes. Each evsel has its own 'hists' object
gathering stats for the particular event.While currently counts are accumulated for the whole session
regardless of the events diversification within compared
sessions.The 'perf diff' command now outputs all matching events within
compared sessions (with event name specified). The per event
diff output stays the same.$ ./perf diff
# Event 'cycles'
#
# Baseline Delta Shared Object Symbol
# ........ .......... ................. ..............................
#
0.00% +15.14% [kernel.kallsyms] [k] __wake_up
0.00% +13.38% [kernel.kallsyms] [k] ext4fs_dirhash... SNIP
0.00% +0.42% [kernel.kallsyms] [k] local_clock
0.17% -0.05% [kernel.kallsyms] [k] native_write_msr_safe# Event 'faults'
#
# Baseline Delta Shared Object Symbol
# ........ .......... ................. ..............................
#
0.00% +79.12% ld-2.15.so [.] _dl_relocate_object
0.00% +11.62% ld-2.15.so [.] openauxSigned-off-by: Jiri Olsa
Cc: Andi Kleen
Cc: Corey Ashford
Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Namhyung Kim
Cc: Paul E. McKenney
Cc: Paul Mackerras
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1346946426-13496-2-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo
06 Sep, 2012
1 commit
-
When analyzing perf data from hosts of other architecture than one of
the local host it's useful to call objdump that is part of a toolchain
for that architecture. Instead of calling regular objdump, call one that
user specified in command line.Signed-off-by: Maciek Borzecki
Acked-by: David Ahern
Link: http://lkml.kernel.org/r/1346754750.16299.3.camel@localhost.localdomain
Signed-off-by: Arnaldo Carvalho de Melo
20 Aug, 2012
1 commit
-
The libexec path is /libexec/perf-core/scripts/*/Perf-Trace-Util.
Signed-off-by: David Ahern
Cc: Ingo Molnar
Link: http://lkml.kernel.org/r/1345391182-71825-1-git-send-email-dsahern@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo
14 Aug, 2012
1 commit
-
Add a description of the JIT interface in the perf symbol resolution
code. I reverse engineered the format from the source.Signed-off-by: Andi Kleen
Acked-by: Pekka Enberg
Cc: Pekka Enberg
Link: http://lkml.kernel.org/r/1344526260-18721-1-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo
08 Aug, 2012
2 commits
-
Updating man perf-list.
Signed-off-by: Robert Richter
Cc: Ingo Molnar
Link: http://lkml.kernel.org/r/1344361396-7237-7-git-send-email-robert.richter@amd.com
Signed-off-by: Arnaldo Carvalho de Melo -
It was missing that only certain bit fields are passed to the config
value which confused users. Updating it.Signed-off-by: Robert Richter
Cc: Ingo Molnar
Link: http://lkml.kernel.org/r/1344361396-7237-6-git-send-email-robert.richter@amd.com
Signed-off-by: Arnaldo Carvalho de Melo
