An error occurred fetching the project authors.
- 29 Jun, 2011 1 commit
-
-
Sam Liao authored
Add "caller/callee" option to support inverted butterfly report, in the inverted report (with caller option), the call graph start from the callee's ancestor. Users can use such view to catch system's performance bottleneck from a sysprof like view. Using this option with specified sort order like pid gives us high level view of call graph statistics. Also add "-G" alias for inverted call graph. Signed-off-by:
Sam Liao <phyomh@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Stephane Eranian <eranian@google.com> Cc: David Ahern <dsahern@gmail.com> Signed-off-by:
Frederic Weisbecker <fweisbec@gmail.com>
-
- 21 Dec, 2010 1 commit
-
-
David Ahern authored
The symfs argument allows analysis of perf.data file using a locally accessible filesystem tree with debug symbols - e.g., tree created during image builds, sshfs mount, loop mounted KVM disk images, USB keys, initrds, etc. Anything with an OS tree can be analyzed from anywhere without the need to populate a local data store with build-ids. Commiter notes: o Fixed up symfs="/" variants handling. o prefixed DSO__ORIG_GUEST_KMODULE case with symfs too, avoiding use of files outside the symfs directory. LKML-Reference: <1291926427-28846-1-git-send-email-daahern@cisco.com> Signed-off-by:
David Ahern <daahern@cisco.com> Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
-
- 09 Dec, 2010 1 commit
-
-
David Ahern authored
This is useful for analyzing a perf data file on a different system than the one data was collected on and still include symbols from loaded kernel modules in the output. Commiter note: Updated the man page accordingly. LKML-Reference: <1291775986-16475-1-git-send-email-daahern@cisco.com> Signed-off-by:
-
- 01 Dec, 2010 1 commit
-
-
Shawn Bohrer authored
Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <1291168642-11402-10-git-send-email-shawn.bohrer@gmail.com> Signed-off-by:
Shawn Bohrer <shawn.bohrer@gmail.com> Signed-off-by:
-
- 21 Aug, 2010 1 commit
-
-
Arnaldo Carvalho de Melo authored
Relying just on ~/.perfconfig or rebuilding the tool disabling support for the TUI is too cumbersome, so allow specifying which UI to use and make the command line switch override whatever is in ~/.perfconfig. Suggested-by:
Christoph Hellwig <hch@infradead.org> Cc: Christoph Hellwig <hch@infradead.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> LKML-Reference: <new-submission> Signed-off-by:
-
- 16 Dec, 2009 1 commit
-
-
Arnaldo Carvalho de Melo authored
That means that almost everything you can do with 'perf report' can be done with 'perf diff', for instance: $ perf record -f find / > /dev/null [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.062 MB perf.data (~2699 samples) ] $ perf record -f find / > /dev/null [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.062 MB perf.data (~2687 samples) ] perf diff | head -8 9.02% +1.00% find libc-2.10.1.so [.] _IO_vfprintf_internal 2.91% -1.00% find [kernel] [k] __kmalloc 2.85% -1.00% find [kernel] [k] ext4_htree_store_dirent 1.99% -1.00% find [kernel] [k] _atomic_dec_and_lock 2.44% find [kernel] [k] half_md4_transform $ So if you want to zoom into libc: $ perf diff --dsos libc-2.10.1.so | head -8 37.34% find [.] _IO_vfprintf_internal 10.34% find [.] __GI_memmove 8.25% +2.00% find [.] _int_malloc 5.07% -1.00% find [.] __GI_mempcpy 7.62% +2.00% find [.] _int_free $ And if there were multiple commands using libc, it is also possible to aggregate them all by using --sort symbol: $ perf diff --dsos libc-2.10.1.so --sort symbol | head -8 37.34% [.] _IO_vfprintf_internal 10.34% [.] __GI_memmove 8.25% +2.00% [.] _int_malloc 5.07% -1.00% [.] __GI_mempcpy 7.62% +2.00% [.] _int_free $ The displacement column now is off by default, to use it: perf diff -m --dsos libc-2.10.1.so --sort symbol | head -8 37.34% [.] _IO_vfprintf_internal 10.34% [.] __GI_memmove 8.25% +2.00% [.] _int_malloc 5.07% -1.00% +2 [.] __GI_mempcpy 7.62% +2.00% -1 [.] _int_free $ Using -t/--field-separator can be used for scripting: $ perf diff -t, -m --dsos libc-2.10.1.so --sort symbol | head -8 37.34, , ,[.] _IO_vfprintf_internal 10.34, , ,[.] __GI_memmove 8.25,+2.00%, ,[.] _int_malloc 5.07,-1.00%, +2,[.] __GI_mempcpy 7.62,+2.00%, -1,[.] _int_free 6.99,+1.00%, -1,[.] _IO_new_file_xsputn 1.89,-2.00%, +4,[.] __readdir64 $ Signed-off-by:Ingo Molnar <mingo@elte.hu>
-
- 09 Nov, 2009 1 commit
-
-
Zeev Tarantov authored
Fix trivial syntax in perf-events user-space tools documentation. Signed-off-by:
Zeev Tarantov <zeev.tarantov@gmail.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <12d7e64c0911081811i7e5b466cu6706ff6ab3e70db4@mail.gmail.com> Signed-off-by:
-
- 31 Aug, 2009 1 commit
-
-
Frederic Weisbecker authored
Add missing documentation for the following parameters: - perf record -R - perf report -g Signed-off-by:
-
- 09 Aug, 2009 1 commit
-
-
Brice Goglin authored
Improve and fix the handling of per-thread counter stats recorded via perf record -s. Previously we only displayed it in debug printouts (-D) and even that output was hard to disambiguate. I moved everything to utils/values.[ch] so that we may reuse it in perf stat. We get something like this now: # PID TID cache-misses cache-references 4658 4659 495581 3238779 4658 4662 498246 3236823 4658 4663 499531 3243162 Then it'll be easy to add --pretty=raw to display a single line per thread/event. By the way, -S was also used for --symbol... So I used -T/--thread here. perf report: Add -T/--threads to display per-thread counter values We get something like this now: # PID TID cache-misses cache-references 4658 4659 495581 3238779 4658 4662 498246 3236823 4658 4663 499531 3243162 Per-thread arrays of counter values are managed in utils/values.[ch] Signed-off-by:
Brice Goglin <Brice.Goglin@inria.fr> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: paulus@samba.org Signed-off-by:
-
- 11 Jul, 2009 2 commits
-
-
Arnaldo Carvalho de Melo authored
[acme@doppio pahole]$ perf report -ns comm,dso,symbol -d /lib64/libc-2.10.1.so -C pahole | head -17 21.94% 32101 [.] _int_malloc 20.10% 29402 [.] __GI_strcmp 16.77% 24533 [.] __tsearch 12.61% 18450 [.] malloc_consolidate 6.42% 9394 [.] _int_free 6.28% 9191 [.] __tfind 4.56% 6678 [.] __GI___libc_free 4.46% 6520 [.] _IO_vfprintf_internal 2.59% 3786 [.] __malloc 1.17% 1716 [.] __GI_memcpy [acme@doppio pahole]$ Signed-off-by: -
Arnaldo Carvalho de Melo authored
Auto-adjust column width of perf report output to the longest occuring string length. Example: [acme@doppio pahole]$ perf report --sort comm,dso,symbol | head -13 12.79% pahole /usr/lib64/libdw-0.141.so [.] __libdw_find_attr 8.90% pahole /lib64/libc-2.10.1.so [.] _int_malloc 8.68% pahole /usr/lib64/libdw-0.141.so [.] __libdw_form_val_len 8.15% pahole /lib64/libc-2.10.1.so [.] __GI_strcmp 6.80% pahole /lib64/libc-2.10.1.so [.] __tsearch 5.54% pahole ./build/libdwarves.so.1.0.0 [.] tag__recode_dwarf_type [acme@doppio pahole]$ [acme@doppio pahole]$ perf report --sort comm,dso,symbol -d /lib64/libc-2.10.1.so | head -10 21.92% pahole /lib64/libc-2.10.1.so [.] _int_malloc 20.08% pahole /lib64/libc-2.10.1.so [.] __GI_strcmp 16.75% pahole /lib64/libc-2.10.1.so [.] __tsearch [acme@doppio pahole]$ Also add these extra options to control the new behaviour: -w, --field-width Force each column width to the provided list, for large terminal readability. -t, --field-separator: Use a special separator character and don't pad with spaces, replacing all occurances of this separator in symbol names (and other output) with a '.' character, that thus it's the only non valid separator. Signed-off-by:
-
- 30 Jun, 2009 3 commits
-
-
Arnaldo Carvalho de Melo authored
So that we can filter by symbol name. The 'pfunct' utility in the 'dwarves' package can be used to create a file with the functions one wants. Example: [acme@doppio pahole]$ pfunct /usr/lib/debug/usr/lib64/libdw-0.141.so.debug | grep dwarf > /tmp/dwarf.symbols [acme@doppio pahole]$ wc -l /tmp/dwarf.symbols 93 /tmp/dwarf.symbols [acme@doppio pahole]$ head -3 /tmp/dwarf.symbols dwfl_addrdwarf dwfl_module_getdwarf dwfl_getdwarf [acme@doppio pahole]$ perf report --sort comm,dso,symbol --comms pahole --dsos /usr/lib64/libdw-0.141.so --symbols file:///tmp/dwarf.symbols 33.99% pahole /usr/lib64/libdw-0.141.so [.] dwarf_tag 29.07% pahole /usr/lib64/libdw-0.141.so [.] dwarf_decl_file 27.71% pahole /usr/lib64/libdw-0.141.so [.] dwarf_getsrclines 4.54% pahole /usr/lib64/libdw-0.141.so 0x00000000007400 3.93% pahole /usr/lib64/libdw-0.141.so [.] dwarf_decl_line 0.46% pahole /usr/lib64/libdw-0.141.so [.] dwarf_getlocation 0.18% pahole /usr/lib64/libdw-0.141.so [.] __libdwarf_next_prime 0.13% pahole /usr/lib64/libdw-0.141.so [.] dwarf_diecu [acme@doppio pahole]$ Signed-off-by:
-
Arnaldo Carvalho de Melo authored
So that we can filter by comm. Symbols in other comms won't be accounted for. Signed-off-by:
-
Arnaldo Carvalho de Melo authored
So that we can filter by dso. Symbols in other dsos won't be accounted for. Signed-off-by:
-
- 23 Jun, 2009 1 commit
-
-
Ingo Molnar authored
Reported-by:
-
- 06 Jun, 2009 1 commit
-
-
Ingo Molnar authored
Several people have suggested that 'perf' has become a full-fledged tool that should be moved out of Documentation/. Move it to the (new) tools/ directory. Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> LKML-Reference: <new-submission> Signed-off-by:
-
- 30 May, 2009 1 commit
-
-
Ingo Molnar authored
Import Git's nice .txt => {man/html/pdf} generation machinery. Fix various errors in the Documentation/perf*.txt description as well. Also fix a bug in builtin-help: we'd map 'perf help top' to 'perftop' if only the 'perf' binary is in the default PATH - confusing the manpage logic. I dont fully understand why Git did it this way - but i suppose it's a migration artifact from their migration from standalone git-xyz commands to 'git xyz' commands. The perf tools were always using the modern form so it's not an issue there. Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: Marcelo Tosatti <mtosatti@redhat.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: John Kacur <jkacur@redhat.com> LKML-Reference: <new-submission> Signed-off-by:
-
- 27 May, 2009 1 commit
-
-
Ingo Molnar authored
output.perf is only output to perf-record - it's input to perf-report. So change it to a more direction-neutral name. Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: Marcelo Tosatti <mtosatti@redhat.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: John Kacur <jkacur@redhat.com> LKML-Reference: <new-submission> Signed-off-by:
-
- 26 May, 2009 1 commit
-
-
Ingo Molnar authored
Add a (minimal) manpage for perf report. Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: Marcelo Tosatti <mtosatti@redhat.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: John Kacur <jkacur@redhat.com> LKML-Reference: <new-submission> Signed-off-by:
-
