1. 08 10月, 2011 10 次提交
    • S
      perf tools: Make perf.data more self-descriptive (v8) · fbe96f29
      Stephane Eranian 提交于
      The goal of this patch is to include more information about the host
      environment into the perf.data so it is more self-descriptive. Overtime,
      profiles are captured on various machines and it becomes hard to track
      what was recorded, on what machine and when.
      
      This patch provides a way to solve this by extending the perf.data file
      with basic information about the host machine. To add those extensions,
      we leverage the feature bits capabilities of the perf.data format.  The
      change is backward compatible with existing perf.data files.
      
      We define the following useful new extensions:
       - HEADER_HOSTNAME: the hostname
       - HEADER_OSRELEASE: the kernel release number
       - HEADER_ARCH: the hw architecture
       - HEADER_CPUDESC: generic CPU description
       - HEADER_NRCPUS: number of online/avail cpus
       - HEADER_CMDLINE: perf command line
       - HEADER_VERSION: perf version
       - HEADER_TOPOLOGY: cpu topology
       - HEADER_EVENT_DESC: full event description (attrs)
       - HEADER_CPUID: easy-to-parse low level CPU identication
      
      The small granularity for the entries is to make it easier to extend
      without breaking backward compatiblity. Many entries are provided as
      ASCII strings.
      
      Perf report/script have been modified to print the basic information as
      easy-to-parse ASCII strings. Extended information about CPU and NUMA
      topology may be requested with the -I option.
      
      Thanks to David Ahern for reviewing and testing the many versions of
      this patch.
      
       $ perf report --stdio
       # ========
       # captured on : Mon Sep 26 15:22:14 2011
       # hostname : quad
       # os release : 3.1.0-rc4-tip
       # perf version : 3.1.0-rc4
       # arch : x86_64
       # nrcpus online : 4
       # nrcpus avail : 4
       # cpudesc : Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz
       # cpuid : GenuineIntel,6,15,11
       # total memory : 8105360 kB
       # cmdline : /home/eranian/perfmon/official/tip/build/tools/perf/perf record date
       # event : name = cycles, type = 0, config = 0x0, config1 = 0x0, config2 = 0x0, excl_usr = 0, excl_kern = 0, id = { 29, 30, 31,
       # HEADER_CPU_TOPOLOGY info available, use -I to display
       # HEADER_NUMA_TOPOLOGY info available, use -I to display
       # ========
       #
       ...
      
       $ perf report --stdio -I
       # ========
       # captured on : Mon Sep 26 15:22:14 2011
       # hostname : quad
       # os release : 3.1.0-rc4-tip
       # perf version : 3.1.0-rc4
       # arch : x86_64
       # nrcpus online : 4
       # nrcpus avail : 4
       # cpudesc : Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz
       # cpuid : GenuineIntel,6,15,11
       # total memory : 8105360 kB
       # cmdline : /home/eranian/perfmon/official/tip/build/tools/perf/perf record date
       # event : name = cycles, type = 0, config = 0x0, config1 = 0x0, config2 = 0x0, excl_usr = 0, excl_kern = 0, id = { 29, 30, 31,
       # sibling cores   : 0-3
       # sibling threads : 0
       # sibling threads : 1
       # sibling threads : 2
       # sibling threads : 3
       # node0 meminfo  : total = 8320608 kB, free = 7571024 kB
       # node0 cpu list : 0-3
       # ========
       #
       ...
      Reviewed-by: NDavid Ahern <dsahern@gmail.com>
      Tested-by: NDavid Ahern <dsahern@gmail.com>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Robert Richter <robert.richter@amd.com>
      Cc: Andi Kleen <ak@linux.intel.com>
      Link: http://lkml.kernel.org/r/20110930134040.GA5575@quadSigned-off-by: NStephane Eranian <eranian@google.com>
      [ committer notes: Use --show-info in the tools as was in the docs, rename
        perf_header_fprintf_info to perf_file_section__fprintf_info, fixup
        conflict with f69b64f7 "perf: Support setting the disassembler style" ]
      Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      fbe96f29
    • A
      perf hists browser: Update the browser.nr_entries after the timer · be83f5ed
      Arnaldo Carvalho de Melo 提交于
      Previously the hist_browser dealt with a static tree of entries, now it
      needs to update the nr_entries in the browser after the timer runs.
      
      A better solution will come when moving using another thread for the
      collapse_resort, etc, but for now this is ok.
      
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Mike Galbraith <efault@gmx.de>
      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-9eno2iq55sjr4iyo899buzaw@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      be83f5ed
    • A
      perf hists browser: Fix TAB/UNTAB use with multiple events · 7d16320e
      Arnaldo Carvalho de Melo 提交于
      When requesting multiple events, say:
      
        # perf top -e instructions -e cycles -e cache-misses
      
      The first screen lets the user chose what to see first, then to switch
      one can either use the left key to get back to the event menu or simply
      use TAB to go the next and shift+TAB to go the prev.
      
      When using TAB/UNTAB the call to perf_evlist__set_selected(event) was
      missing, fix it.
      
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Mike Galbraith <efault@gmx.de>
      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-3xqqh3fwmt914gg43frey14y@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      7d16320e
    • A
      perf hists browser: Don't offer symbol actions when symbols not on --sort · 724c9c9f
      Arnaldo Carvalho de Melo 提交于
      Removing all the entries that only apply to symbols from the menu.
      
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Mike Galbraith <efault@gmx.de>
      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-7bap0cy2fxtorlj5hgsp48m1@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      724c9c9f
    • A
      perf annotate browser: Use -> to navigate on assembly lines · 234a5375
      Arnaldo Carvalho de Melo 提交于
      And add better explanations when the line isn't actionable, like non
      assembly lines and on other instructions.
      Suggested-by: NIngo Molnar <mingo@elte.hu>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Mike Galbraith <efault@gmx.de>
      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-375n844b5wra7lgq08ou153j@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      234a5375
    • S
      perf tools: Fix broken number of samples for perf report -n · e39622ce
      Stephane Eranian 提交于
      The perf report -n option was broken because it was not reporting the
      correct number of samples depending on the sorting mode. By default,
      samples are sorted by comm,dso,sym. That means that samples for the same
      command (binary) get collapsed.
      
      The hists__collapse_insert_entry() had a bug whereby it was aggregating
      the number of events observed (periods) but not the number of samples.
      Consequently, the number of samples reported could be below reality. The
      percentage remained correct because based on the periods.
      
      This patch fixes the problem by also aggregating the number of samples.
      Here is an example:
      
      $ perf report -n --stdio
          12.38%        842     pong  [kernel.kallsyms]     [k] __lock_acquire
      
      Here pong (a ctxsw stress test), is the only program running
      and thus it is the only one responsible for the lock_acquire samples.
      
      If we change the sorting mode:
      
      $ perf report -n --stdio --sort=sym
          12.38%       1732  [k] __lock_acquire
      
      The actual number of samples is shown.
      
      With the fix:
      
      $ perf report -n --stdio
          12.38%       1732     pong  [kernel.kallsyms]     [k] __lock_acquire
      
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Link: http://lkml.kernel.org/r/20111003093815.GA6393@quadSigned-off-by: NStephane Eranian <eranian@google.com>
      Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      e39622ce
    • A
      perf top: Use the TUI interface by default · 8b1bfdbd
      Arnaldo Carvalho de Melo 提交于
      To disable it either:
      
      1. Make sure newt-devel is not installed when building it
      
      2. Use 'perf top --stdio' just like with report
      
      3. Edit your ~/.perfconfig or system wide config and have this there:
      
      [tui]
      
      	top = off
      
      But you shouldn't, since the TUI is so much more powerful, has
      integration with annotation and where lots more interesting features
      will be developed, so if something annoys you (the colors?) just let me
      know and I'll do my best to make it pleasant as a default.
      
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Mike Galbraith <efault@gmx.de>
      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-cy2tn4uj1t7c3aqss5l25of5@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      8b1bfdbd
    • A
      perf annotate browser: Allow navigation to called functions · 34958544
      Arnaldo Carvalho de Melo 提交于
      I.e. when in the annotate TUI window, if Enter is pressed over an
      assembly line with a 'callq' it will try to open another TUI window with
      that symbol.
      
      This is just a proof of concept and works only on x86_64, more work is
      needed to support kernel modules, userland, other arches, etc, but
      should already be useful as-is.
      Suggested-by: NIngo Molnar <mingo@elte.hu>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Mike Galbraith <efault@gmx.de>
      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-opyvskw5na3qdmkv8vxi3zbr@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      34958544
    • A
      perf top: Add callgraph support · 19d4ac3c
      Arnaldo Carvalho de Melo 提交于
      Just like in 'perf report', but live.
      
      Still needs to decay the callchains, but already somewhat useful as-is.
      
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Mike Galbraith <efault@gmx.de>
      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-cj3rmaf5jpsvi3v0tf7t4uvp@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      19d4ac3c
    • A
      perf top: Reuse the 'report' hist_entry/hists classes · ab81f3fd
      Arnaldo Carvalho de Melo 提交于
      This actually fixes several problems we had in the old 'perf top':
      
      1. Unresolved symbols not show, limitation that came from the old
         "KernelTop" codebase, to solve it we would need to do changes
         that would make sym_entry have most of the hist_entry fields.
      2. It was using the number of samples, not the sum of sample->period.
      
      And brings the --sort code that allows us to have all the views in
      'perf report', for instance:
      
      [root@emilia ~]# perf top --sort dso
      PerfTop: 5903 irqs/sec kernel:77.5% exact: 0.0% [1000Hz cycles], (all, 8 CPUs)
      ------------------------------------------------------------------------------
      
          31.59%  libcrypto.so.1.0.0
          21.55%  [kernel]
          18.57%  libpython2.6.so.1.0
           7.04%  libc-2.12.so
           6.99%  _backend_agg.so
           4.72%  sshd
           1.48%  multiarray.so
           1.39%  libfreetype.so.6.3.22
           1.37%  perf
           0.71%  libgobject-2.0.so.0.2200.5
           0.53%  [tg3]
           0.48%  libglib-2.0.so.0.2200.5
           0.44%  libstdc++.so.6.0.13
           0.40%  libcairo.so.2.10800.8
           0.38%  libm-2.12.so
           0.34%  umath.so
           0.30%  libgdk-x11-2.0.so.0.1800.9
           0.22%  libpthread-2.12.so
           0.20%  libgtk-x11-2.0.so.0.1800.9
           0.20%  librt-2.12.so
           0.15%  _path.so
           0.13%  libpango-1.0.so.0.2800.1
           0.11%  libatlas.so.3.0
           0.09%  ft2font.so
           0.09%  libpangoft2-1.0.so.0.2800.1
           0.08%  libX11.so.6.3.0
           0.07%  [vdso]
           0.06%  cyclictest
      ^C
      
      All the filter lists can be used as well: --dsos, --comms, --symbols,
      etc.
      
      The 'perf report' TUI is also reused, being possible to apply all the
      zoom operations, do annotation, etc.
      
      This change will allow multiple simplifications in the symbol system as
      well, that will be detailed in upcoming changesets.
      
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Mike Galbraith <efault@gmx.de>
      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-xzaaldxq7zhqrrxdxjifk1mh@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      ab81f3fd
  2. 07 10月, 2011 5 次提交
  3. 06 10月, 2011 1 次提交
  4. 05 10月, 2011 12 次提交
  5. 04 10月, 2011 12 次提交