- 01 Feb, 2013 1 commit
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Ingo Molnar authored
Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo: . Make some POWER7 events available in sysfs, equivalent to what was done on x86, from Sukadev Bhattiprolu. . Add event group view, from Namyung Kim: To use it, 'perf record' should group events when recording. And then perf report parses the saved group relation from file header and prints them together if --group option is provided. You can use 'perf evlist' command to see event group information: $ perf record -e '{ref-cycles,cycles}' noploop 1 [ perf record: Woken up 2 times to write data ] [ perf record: Captured and wrote 0.385 MB perf.data (~16807 samples) ] $ perf evlist --group {ref-cycles,cycles} With this example, default perf report will show you each event separately like this: $ perf report ... # group: {ref-cycles,cycles} # ======== # Samples: 3K of event 'ref-cycles' # Event count (approx.): 3153797218 # # Overhead Command Shared Object Symbol # ........ ....... ................. .......................... 99.84% noploop noploop [.] main 0.07% noploop ld-2.15.so [.] strcmp 0.03% noploop [kernel.kallsyms] [k] timerqueue_del 0.03% noploop [kernel.kallsyms] [k] sched_clock_cpu 0.02% noploop [kernel.kallsyms] [k] account_user_time 0.01% noploop [kernel.kallsyms] [k] __alloc_pages_nodemask 0.00% noploop [kernel.kallsyms] [k] native_write_msr_safe # Samples: 3K of event 'cycles' # Event count (approx.): 3722310525 # # Overhead Command Shared Object Symbol # ........ ....... ................. ......................... 99.76% noploop noploop [.] main 0.11% noploop [kernel.kallsyms] [k] _raw_spin_lock 0.06% noploop [kernel.kallsyms] [k] find_get_page 0.03% noploop [kernel.kallsyms] [k] sched_clock_cpu 0.02% noploop [kernel.kallsyms] [k] rcu_check_callbacks 0.02% noploop [kernel.kallsyms] [k] __current_kernel_time 0.00% noploop [kernel.kallsyms] [k] native_write_msr_safe In this case the event group information will be shown in the end of header area. So you can use --group option to enable event group view. $ 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_time As you can see the Overhead column now contains both of ref-cycles and cycles and header line shows group information also - 'anon group { ref-cycles, cycles }'. The output is sorted by period of group leader first. If perf.data file doesn't contain group information, this --group option does nothing. So if you want enable event group view by default you can set it in ~/.perfconfig file: $ cat ~/.perfconfig [report] group = true It can be overridden with command line if you want: $ perf report --no-group Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by:
Ingo Molnar <mingo@kernel.org>
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- 31 Jan, 2013 26 commits
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Sukadev Bhattiprolu authored
This patchset addes two new sets of files to sysfs for POWER architecture. - perf event config format in /sys/devices/cpu/format/event - generic and POWER-specific perf events in /sys/devices/cpu/events/ The format of the first file is already documented in: sysfs-bus-event_source-devices-format Document the format of the second set of files '/sys/devices/cpu/events/*' which would also become part of the ABI. Changelog[v4]: [Jiri Olsa]: Mention that multiple event= like terms can be specified in the 'events' file. [Jiri Olsa]: Remove the documentation for the 'config format' file as it is already documented in 'Documentation/ABI/testing/'. [Jiri Olsa]: Move ABI documentation from 'stable/' to 'testing/' Changelog[v3]: [Greg KH] Include ABI documentation. Signed-off-by:
Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Acked-by:
Jiri Olsa <jolsa@redhat.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Anton Blanchard <anton@au1.ibm.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Robert Richter <robert.richter@amd.com> Cc: Stephane Eranian <eranian@google.com> Cc: linuxppc-dev@ozlabs.org Link: http://lkml.kernel.org/r/20130123062645.GG13720@us.ibm.comSigned-off-by:
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Sukadev Bhattiprolu authored
Make some POWER7-specific perf events available in sysfs. $ /bin/ls -1 /sys/bus/event_source/devices/cpu/events/ branch-instructions branch-misses cache-misses cache-references cpu-cycles instructions PM_BRU_FIN PM_BRU_MPRED PM_CMPLU_STALL PM_CYC PM_GCT_NOSLOT_CYC PM_INST_CMPL PM_LD_MISS_L1 PM_LD_REF_L1 stalled-cycles-backend stalled-cycles-frontend where the 'PM_*' events are POWER specific and the others are the generic events. This will enable users to specify these events with their symbolic names rather than with their raw code. perf stat -e 'cpu/PM_CYC' ... Signed-off-by:
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Sukadev Bhattiprolu authored
Make the generic perf events in POWER7 available via sysfs. $ ls /sys/bus/event_source/devices/cpu/events branch-instructions branch-misses cache-misses cache-references cpu-cycles instructions stalled-cycles-backend stalled-cycles-frontend $ cat /sys/bus/event_source/devices/cpu/events/cache-misses event=0x400f0 This patch is based on commits that implement this functionality on x86. Eg: commit a4747393 Author: Jiri Olsa <jolsa@redhat.com> Date: Wed Oct 10 14:53:11 2012 +0200 perf/x86: Make hardware event translations available in sysfs Changelog:[v2] [Jiri Osla] Drop EVENT_ID() macro since it is only used once. Signed-off-by:
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Sukadev Bhattiprolu authored
Rename EVENT_ATTR() to PMU_EVENT_ATTR() and make it global so it is available to all architectures. Further to allow architectures flexibility, have PMU_EVENT_ATTR() pass in the variable name as a parameter. Changelog[v2] - [Jiri Olsa] No need to define PMU_EVENT_PTR() Signed-off-by:
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Sukadev Bhattiprolu authored
Define and use macros to identify perf events codes This would make it easier and more readable when these event codes need to be used in more than one place. Signed-off-by:
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Namhyung Kim authored
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 cycles Suggested-by:Namhyung Kim <namhyung@kernel.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1358845787-1350-20-git-send-email-namhyung@kernel.orgSigned-off-by:
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Namhyung Kim authored
Add report.group config option for setting default value of event group view. It affects the report output only if perf.data contains event group info. A user can write .perfconfig file like below to enable group view by default: $ cat ~/.perfconfig [report] group = true And it can be disabled through command line: $ perf report --no-group Signed-off-by:
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Namhyung Kim authored
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_time Signed-off-by: -
Namhyung Kim authored
When using event group viewer, it's better to show the group description rather than the leader information alone. If a leader did not contain any member, it's a non-group event. Signed-off-by:
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Namhyung Kim authored
Since we have all necessary information in the leader events and other members don't, bypass members. Member events will be shown along with the leaders if event group is enabled. Signed-off-by:
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Namhyung Kim authored
When event group feature is enabled, each column header is expanded to match with the whole group column width. But this is not needed for GTK+ browser since ti usually use variable-width fonts. So trim it. Signed-off-by:
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Namhyung Kim authored
Show group members's overhead also when showing leader's if event group is enabled. Signed-off-by:
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Namhyung Kim authored
Show group members' overhead also when showing the leader's if event group is enabled. Signed-off-by:
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Namhyung Kim authored
Move coloring logic into the hpp functions so that each value can be colored independently. It'd required for event group view. For overhead column, add a callback for printing 'folded_sign' of callchains of a hist entry. Signed-off-by:
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Namhyung Kim authored
Show group member's overhead also when showing the leader's if event group is enabled. Signed-off-by:
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Namhyung Kim authored
The hpp helpers do same job for each field so it was implemented as macro in order to access those fields easily. But it gets cumbersome to maintain a large function in a macro as the function grows. Factor it out to a function with a little helper macro to access field. Signed-off-by:
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Namhyung Kim authored
The hpp helpers do same job for each field so it was implemented as macro in order to access those fields easily. But it gets cumbersome to maintain a large function in a macro as the function grows. Factor it out to a function with a little helper macro to access field. Signed-off-by:
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Namhyung Kim authored
Most of hpp helper functions do same jobs for different fields thus consolidate them to appropriate functions/macros. Signed-off-by:
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Namhyung Kim authored
When event group is enabled, sorting hist entries on periods for output should consider groups members' period also. To do that, build period table using link/pair information and compare the table. Signed-off-by:
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Namhyung Kim authored
Now the event grouping viewing requires linking all member hists in a group to the leader's. Thus hists__output_resort should be called after linking all events in evlist. Introduce symbol_conf.event_group flag to determine whether the feature is enabled or not. Signed-off-by:
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Namhyung Kim authored
Save group relationship information so that it can be restored when perf report is running. Signed-off-by:
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Namhyung Kim authored
As some new fields for handling groups added, check them to be sure to have valid values in test__group* cases. Signed-off-by:
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Namhyung Kim authored
Add a few of group-related field in struct perf_{evlist,evsel} so that the group information in a evlist can be known easily. It only counts groups which have more than 1 members since leader-only groups are treated as non-group events. Signed-off-by: -
Arnaldo Carvalho de Melo authored
Removing one more memory leak found with valgrind. Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-gnb1gms0k8wictmtm2umpr8u@git.kernel.orgSigned-off-by:
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Arnaldo Carvalho de Melo authored
Just return to the perf main() routine so that an unified exit path can be followed and resources released, helping in finding memory leaks. Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-ro8oeodo96490nrhcph57atr@git.kernel.orgSigned-off-by:
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Ingo Molnar authored
Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo: . Fix some leaks in exit paths. . Use memdup where applicable . Remove some die() calls, allowing callers to handle exit paths gracefully. . Correct typo in tools Makefile, fix from Borislav Petkov. . Add 'perf bench numa mem' NUMA performance measurement suite, from Ingo Molnar. . Handle dynamic array's element size properly, fix from Jiri Olsa. . Fix memory leaks on evsel->counts, from Namhyung Kim. . Make numa benchmark optional, allowing the build in machines where required numa libraries are not present, fix from Peter Hurley. . Add interval printing in 'perf stat', from Stephane Eranian. . Fix compile warnings in tests/attr.c, from Sukadev Bhattiprolu. . Fix double free, pclose instead of fclose, leaks and double fclose errors found with the cppcheck tool, from Thomas Jarosch. Signed-off-by:
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- 30 Jan, 2013 13 commits
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Thomas Jarosch authored
cppcheck reported: [util/header.c:983]: (error) Used file that is not opened. Thanks to Arnaldo Carvalho de Melo for pointing out that fclose(NULL) is undefined behavior -> protect against it. Signed-off-by:
Thomas Jarosch <thomas.jarosch@intra2net.com> Link: http://lkml.kernel.org/r/1751778.SZQB4fNdIh@stormSigned-off-by:
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Thomas Jarosch authored
cppcheck reported: [util/header.c:316]: (error) Memory leak: filename [util/header.c:316]: (error) Memory leak: linkname Signed-off-by:
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Thomas Jarosch authored
cppcheck reported: [util/event.c:480]: (error) Memory leak: event Signed-off-by:
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Thomas Jarosch authored
cppcheck message: [tools/perf/util/sort.c:277]: (error) Mismatching allocation and deallocation: fp Also fix descriptor leak on error and always initialize the "fp" variable. Signed-off-by:
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Thomas Jarosch authored
Can only be triggered via CROSS_COMPILE env var. Detected by cppcheck. Signed-off-by:
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Sukadev Bhattiprolu authored
We print several '__u64' quantities using '%llu'. On powerpc, we by default include '<asm-generic/int-l64.h> which results in __u64 being an unsigned long. This causes compile warnings which are treated as errors due to '-Werror'. By defining __SANE_USERSPACE_TYPES__ we include <asm-generic/int-ll64.h> and define __u64 as unsigned long long. Changelog[v2]: [Michael Ellerman] Use __SANE_USERSPACE_TYPES__ and avoid PRIu64 format specifier - which as Jiri Olsa pointed out, breaks on x86-64. Signed-off-by:
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Namhyung Kim authored
The ->counts field was never freed in the current code. Add perf_evsel__free_counts() function to free it properly. Signed-off-by:
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Stephane Eranian authored
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 cycles The 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,cycles Signed-off-by:Stephane Eranian <eranian@google.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung.kim@lge.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1359460064-3060-3-git-send-email-eranian@google.comSigned-off-by:
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Stephane Eranian authored
This field will be used by commands which print counter deltas on regular timer intervals, such as perf stat -I. Signed-off-by:
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Peter Hurley authored
Commit "perf: Add 'perf bench numa mem'..." added a NUMA performance benchmark to perf. Make this optional and test for required dependencies. Signed-off-by:
Peter Hurley <peter@hurleysoftware.com> Acked-by:
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Ingo Molnar authored
Add a suite of NUMA performance benchmarks. The goal was simulate the behavior and access patterns of real NUMA workloads, via a wide range of parameters, so this tool goes well beyond simple bzero() measurements that most NUMA micro-benchmarks use: - It processes the data and creates a chain of data dependencies, like a real workload would. Neither the compiler, nor the kernel (via KSM and other optimizations) nor the CPU can eliminate parts of the workload. - It randomizes the initial state and also randomizes the target addresses of the processing - it's not a simple forward scan of addresses. - It provides flexible options to set process, thread and memory relationship information: -G sets "global" memory shared between all test processes, -P sets "process" memory shared by all threads of a process and -T sets "thread" private memory. - There's a NUMA convergence monitoring and convergence latency measurement option via -c and -m. - Micro-sleeps and synchronization can be injected to provoke lock contention and scheduling, via the -u and -S options. This simulates IO and contention. - The -x option instructs the workload to 'perturb' itself artificially every N seconds, by moving to the first and last CPU of the system periodically. This way the stability of convergence equilibrium and the number of steps taken for the scheduler to reach equilibrium again can be measured. - The amount of work can be specified via the -l loop count, and/or via a -s seconds-timeout value. - CPU and node memory binding options, to test hard binding scenarios. THP can be turned on and off via madvise() calls. - Live reporting of convergence progress in an 'at glance' output format. Printing of convergence and deconvergence events. The 'perf bench numa mem -a' option will start an array of about 30 individual tests that will each output such measurements: # Running 5x5-bw-thread, "perf bench numa mem -p 5 -t 5 -P 512 -s 20 -zZ0q --thp 1" 5x5-bw-thread, 20.276, secs, runtime-max/thread 5x5-bw-thread, 20.004, secs, runtime-min/thread 5x5-bw-thread, 20.155, secs, runtime-avg/thread 5x5-bw-thread, 0.671, %, spread-runtime/thread 5x5-bw-thread, 21.153, GB, data/thread 5x5-bw-thread, 528.818, GB, data-total 5x5-bw-thread, 0.959, nsecs, runtime/byte/thread 5x5-bw-thread, 1.043, GB/sec, thread-speed 5x5-bw-thread, 26.081, GB/sec, total-speed See the help text and the code for more details. Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Rik van Riel <riel@redhat.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Hugh Dickins <hughd@google.com> Signed-off-by: -
Borislav Petkov authored
It should be make -C tools/ <tool>_install Signed-off-by:
Borislav Petkov <bp@suse.de> Cc: Ingo Molnar <mingo@kernel.org> Link: http://lkml.kernel.org/r/1359456492-22156-1-git-send-email-bp@alien8.deSigned-off-by:
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Arnaldo Carvalho de Melo authored
This test: 7: Validate PERF_RECORD_* events & perf_sample fields needs to call perf_evlist__delete_maps(). Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-t3181qy15avffdacqjcxfku2@git.kernel.orgSigned-off-by:
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