17 Dec, 2009
4 commits
-
Create events with a pid and cpu contraint for inherited events
so that we get a stream per cpu, instead of all cpus contending
on a single stream.Signed-off-by: Peter Zijlstra
Cc: Arnaldo Carvalho de Melo
Cc: fweisbec@gmail.com
Cc: Paul Mackerras
LKML-Reference:
Signed-off-by: Ingo Molnar -
Remove that ugly usleep and provide proper serialization between
parent and child just like perf-stat does.Signed-off-by: Peter Zijlstra
Cc: Arnaldo Carvalho de Melo
Cc: fweisbec@gmail.com
Cc: Paul Mackerras
LKML-Reference:
Signed-off-by: Ingo Molnar -
Otherwise we do integer math and the delta values round up to
multiples of 1.0%.Also, calculate absolute values. Things look precise now:
$ perf report -i perf.data.old --sort dso,symbol | head -13
9.02% libc-2.10.1.so [.] _IO_vfprintf_internal
4.88% find [.] 0x00000000014af0
2.91% [kernel] [k] __kmalloc
2.85% [kernel] [k] ext4_htree_store_dirent
2.50% libc-2.10.1.so [.] __GI_memmove
2.44% [kernel] [k] half_md4_transform
2.43% [kernel] [k] _spin_lock
2.33% [kernel] [k] system_call
$ perf report -i perf.data --sort dso,symbol | head -13
8.55% libc-2.10.1.so [.] _IO_vfprintf_internal
3.11% [kernel] [k] __kmalloc
3.07% [kernel] [k] ext4_htree_store_dirent
2.66% find [.] 0x00000000016bcf
2.61% [kernel] [k] _atomic_dec_and_lock
2.46% [kernel] [k] half_md4_transform
2.41% libc-2.10.1.so [.] __GI_memmove
2.30% find [.] 0x00000000009219
$ perf diff | head -13
9.02% -0.47% libc-2.10.1.so [.] _IO_vfprintf_internal
2.91% +0.20% [kernel] [k] __kmalloc
2.85% +0.23% [kernel] [k] ext4_htree_store_dirent
1.99% +0.62% [kernel] [k] _atomic_dec_and_lock
2.44% +0.02% [kernel] [k] half_md4_transform
2.50% -0.09% libc-2.10.1.so [.] __GI_memmove
1.88% +0.01% [kernel] [k] __d_lookup
2.43% -0.75% [kernel] [k] _spin_lock
0.97% +0.62% [kernel] [k] path_get
1.99% -0.42% libc-2.10.1.so [.] _int_malloc
$Signed-off-by: Arnaldo Carvalho de Melo
Cc: Frédéric Weisbecker
Cc: Mike Galbraith
Cc: Peter Zijlstra
Cc: Paul Mackerras
LKML-Reference:
Signed-off-by: Ingo Molnar -
This is a more intuitive / more meaningful default:
$ perf diff | head -8
9.02% +1.00% libc-2.10.1.so [.] _IO_vfprintf_internal
2.91% -1.00% [kernel] [k] __kmalloc
2.85% -1.00% [kernel] [k] ext4_htree_store_dirent
1.99% -1.00% [kernel] [k] _atomic_dec_and_lock
2.44% [kernel]
$Suggested-by: Ingo Molnar
Signed-off-by: Arnaldo Carvalho de Melo
Cc: Frédéric Weisbecker
Cc: Mike Galbraith
Cc: Peter Zijlstra
Cc: Paul Mackerras
LKML-Reference:
Signed-off-by: Ingo Molnar
16 Dec, 2009
22 commits
-
That means that almost everything you can do with 'perf report'
can be done with 'perf diff', for instance:$ 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
$Signed-off-by: Arnaldo Carvalho de Melo
Cc: Frédéric Weisbecker
Cc: Mike Galbraith
Cc: Peter Zijlstra
Cc: Paul Mackerras
LKML-Reference:
Signed-off-by: Ingo Molnar -
Introduced in:
d599db3fc5dd4f1e8432fdbc6d899584b25f4dff
"perf report: Generalize perf_session__fprintf_hists()"Signed-off-by: Arnaldo Carvalho de Melo
Cc: Frédéric Weisbecker
Cc: Mike Galbraith
Cc: Peter Zijlstra
Cc: Paul Mackerras
LKML-Reference:
Signed-off-by: Ingo Molnar -
Those don't make sense for tools such as 'perf diff'.
Signed-off-by: Arnaldo Carvalho de Melo
Cc: Frédéric Weisbecker
Cc: Mike Galbraith
Cc: Peter Zijlstra
Cc: Paul Mackerras
LKML-Reference:
Signed-off-by: Ingo Molnar -
Will be used in other tools such as 'perf diff'.
Signed-off-by: Arnaldo Carvalho de Melo
Cc: Frédéric Weisbecker
Cc: Mike Galbraith
Cc: Peter Zijlstra
Cc: Paul Mackerras
LKML-Reference:
Signed-off-by: Ingo Molnar -
Pull it out of builtin-report - further changes will be made and it
will then be reusable in 'perf diff' as well.Signed-off-by: Arnaldo Carvalho de Melo
Cc: Frédéric Weisbecker
Cc: Mike Galbraith
Cc: Peter Zijlstra
Cc: Paul Mackerras
LKML-Reference:
Signed-off-by: Ingo Molnar -
So that --dsos, --comm, --symbols can bem used in more tools,
like in perf diff:$ perf record -f find / > /dev/null
$ perf record -f find / > /dev/null
$ perf diff --dsos /lib64/libc-2.10.1.so | head -5
1 +22392124 /lib64/libc-2.10.1.so _IO_vfprintf_internal
2 +6410655 /lib64/libc-2.10.1.so __GI_memmove
3 +1 +9192692 /lib64/libc-2.10.1.so _int_malloc
4 -1 -15158605 /lib64/libc-2.10.1.so _int_free
5 +45669 /lib64/libc-2.10.1.so _IO_new_file_xsputn
$Signed-off-by: Arnaldo Carvalho de Melo
Cc: Frédéric Weisbecker
Cc: Mike Galbraith
Cc: Peter Zijlstra
Cc: Paul Mackerras
LKML-Reference:
Signed-off-by: Ingo Molnar -
Will be used in perf diff too.
Signed-off-by: Arnaldo Carvalho de Melo
Cc: Frédéric Weisbecker
Cc: Mike Galbraith
Cc: Peter Zijlstra
Cc: Paul Mackerras
LKML-Reference:
Signed-off-by: Ingo Molnar -
This simplifies a lot of functions, less stuff to be done by
tool writers.Signed-off-by: Arnaldo Carvalho de Melo
Cc: Frédéric Weisbecker
Cc: Mike Galbraith
Cc: Peter Zijlstra
Cc: Paul Mackerras
LKML-Reference:
Signed-off-by: Ingo Molnar -
Fix perf probe to show which probe point is not found.
With out this patch, it shows just "No probe point found."
This doesn't help users if they specify several probes.
e.g.# perf probe -f --add schedule --add test
Fatal: No probe point found.This patch makes error message more helpful as below.
# perf probe --add schedule --add test
Fatal: Probe point 'test' not found. - probe not added.Signed-off-by: Masami Hiramatsu
Cc: Paul Mackerras
Cc: Arnaldo Carvalho de Melo
Cc: Steven Rostedt
Cc: Jim Keniston
Cc: Ananth N Mavinakayanahalli
Cc: Christoph Hellwig
Cc: Frank Ch. Eigler
Cc: Jason Baron
Cc: K.Prasad
Cc: Peter Zijlstra
Cc: Srikar Dronamraju
Cc: systemtap
Cc: DLE
Cc: Frederic Weisbecker
LKML-Reference:
Signed-off-by: Ingo Molnar -
Check symbols in symtab/kallsyms when no debuginfo
is available.e.g.
# perf probe test
Fatal: Kernel symbol 'test' not found - probe not added.Signed-off-by: Masami Hiramatsu
Cc: Paul Mackerras
Cc: Arnaldo Carvalho de Melo
Cc: Steven Rostedt
Cc: Jim Keniston
Cc: Ananth N Mavinakayanahalli
Cc: Christoph Hellwig
Cc: Frank Ch. Eigler
Cc: Jason Baron
Cc: K.Prasad
Cc: Peter Zijlstra
Cc: Srikar Dronamraju
Cc: systemtap
Cc: DLE
Cc: Frederic Weisbecker
LKML-Reference:
Signed-off-by: Ingo Molnar -
Check build-id of vmlinux by using functions in symbol.c.
This also exposes map__load() for getting vmlinux path,
and removes vmlinux path list in builtin-probe.c,
because symbol.c already has that. Checking build-id
prevents users to open old or different debuginfo from
current running kernel.Signed-off-by: Masami Hiramatsu
Cc: Paul Mackerras
Cc: Arnaldo Carvalho de Melo
Cc: Steven Rostedt
Cc: Jim Keniston
Cc: Ananth N Mavinakayanahalli
Cc: Christoph Hellwig
Cc: Frank Ch. Eigler
Cc: Jason Baron
Cc: K.Prasad
Cc: Peter Zijlstra
Cc: Srikar Dronamraju
Cc: systemtap
Cc: DLE
Cc: Frederic Weisbecker
LKML-Reference:
Signed-off-by: Ingo Molnar -
Reject second attempt of adding same-name event. This patch
also provides --force option which allows user to add additional
probe events on the same-name event.e.g.
(the first attempt : success)
./perf probe schedule
Added new event:
probe:schedule (on schedule+0)(the second attempt : failure)
./perf probe schedule:11
Error: event "schedule" already exists. (Use -f to force duplicates.)
Fatal: Can't add new event.(the second attempt with -f : successfully added)
./perf probe -f schedule:11
Added new event:
probe:schedule_1 (on schedule+45)Signed-off-by: Masami Hiramatsu
Cc: Paul Mackerras
Cc: Arnaldo Carvalho de Melo
Cc: Steven Rostedt
Cc: Jim Keniston
Cc: Ananth N Mavinakayanahalli
Cc: Christoph Hellwig
Cc: Frank Ch. Eigler
Cc: Jason Baron
Cc: K.Prasad
Cc: Peter Zijlstra
Cc: Srikar Dronamraju
Cc: systemtap
Cc: DLE
Cc: Frederic Weisbecker
LKML-Reference:
Signed-off-by: Ingo Molnar -
Support event name syntax for --add option. This allows
users to specify event name for each new event.The --add syntax is:
perf probe --add '[EVENT=]SRC:LINE ARGS'
or
perf probe --add '[EVENT=]FUNC[+OFFS|%return|:RLN][@SRC] ARGS'e.g.
./perf probe --add myprobe1=schedule
Note: currently group name is not supported yet, because it
can cause name-space confliction with other tracepoint/
hw-breakpoint events.Signed-off-by: Masami Hiramatsu
Cc: Paul Mackerras
Cc: Arnaldo Carvalho de Melo
Cc: Steven Rostedt
Cc: Jim Keniston
Cc: Ananth N Mavinakayanahalli
Cc: Christoph Hellwig
Cc: Frank Ch. Eigler
Cc: Jason Baron
Cc: K.Prasad
Cc: Peter Zijlstra
Cc: Srikar Dronamraju
Cc: systemtap
Cc: DLE
Cc: Frederic Weisbecker
LKML-Reference:
Signed-off-by: Ingo Molnar -
Add glob-expression matching support on --del option.
You can use wildcards for specifying deleting events.
e.g.Clear all probe events:
# perf probe --del '*'
Clear probes on schedule():
# perf probe --del 'schedule*'
Signed-off-by: Masami Hiramatsu
Cc: Paul Mackerras
Cc: Arnaldo Carvalho de Melo
Cc: Steven Rostedt
Cc: Jim Keniston
Cc: Ananth N Mavinakayanahalli
Cc: Christoph Hellwig
Cc: Frank Ch. Eigler
Cc: Jason Baron
Cc: K.Prasad
Cc: Peter Zijlstra
Cc: Srikar Dronamraju
Cc: systemtap
Cc: DLE
Cc: Frederic Weisbecker
LKML-Reference:
Signed-off-by: Ingo Molnar -
Use strlist__for_each macros instead of using strlist__entry()
and index variable.Signed-off-by: Masami Hiramatsu
Cc: Paul Mackerras
Cc: Arnaldo Carvalho de Melo
Cc: Steven Rostedt
Cc: Jim Keniston
Cc: Ananth N Mavinakayanahalli
Cc: Christoph Hellwig
Cc: Frank Ch. Eigler
Cc: Jason Baron
Cc: K.Prasad
Cc: Peter Zijlstra
Cc: Srikar Dronamraju
Cc: systemtap
Cc: DLE
Cc: Frederic Weisbecker
LKML-Reference:
Signed-off-by: Ingo Molnar -
Add for_each iteration macros for strlist. This patch
introduces strlist__for_each() and strlist__for_each_safe(),
both are similar to list_for_each() and list_for_each_safe().Signed-off-by: Masami Hiramatsu
Cc: Paul Mackerras
Cc: Arnaldo Carvalho de Melo
Cc: Steven Rostedt
Cc: Jim Keniston
Cc: Ananth N Mavinakayanahalli
Cc: Christoph Hellwig
Cc: Frank Ch. Eigler
Cc: Jason Baron
Cc: K.Prasad
Cc: Peter Zijlstra
Cc: Srikar Dronamraju
Cc: systemtap
Cc: DLE
Cc: Frederic Weisbecker
LKML-Reference:
Signed-off-by: Ingo Molnar -
Fix --del option to update current existing event list
after perf probe deleted an event.Signed-off-by: Masami Hiramatsu
Cc: Paul Mackerras
Cc: Arnaldo Carvalho de Melo
Cc: Steven Rostedt
Cc: Jim Keniston
Cc: Ananth N Mavinakayanahalli
Cc: Christoph Hellwig
Cc: Frank Ch. Eigler
Cc: Jason Baron
Cc: K.Prasad
Cc: Peter Zijlstra
Cc: Srikar Dronamraju
Cc: systemtap
Cc: DLE
Cc: Frederic Weisbecker
LKML-Reference:
Signed-off-by: Ingo Molnar -
Fix --del option to show info message instead of warning
if failing to find specified event.Signed-off-by: Masami Hiramatsu
Cc: Paul Mackerras
Cc: Arnaldo Carvalho de Melo
Cc: Steven Rostedt
Cc: Jim Keniston
Cc: Ananth N Mavinakayanahalli
Cc: Christoph Hellwig
Cc: Frank Ch. Eigler
Cc: Jason Baron
Cc: K.Prasad
Cc: Peter Zijlstra
Cc: Srikar Dronamraju
Cc: systemtap
Cc: DLE
Cc: Frederic Weisbecker
LKML-Reference:
Signed-off-by: Ingo Molnar -
Show need-dwarf message only if the probe is really requires
debuginfo analysis. This also use pr_debug for debugging message
instead of pr_warning.Signed-off-by: Masami Hiramatsu
Cc: Paul Mackerras
Cc: Arnaldo Carvalho de Melo
Cc: Steven Rostedt
Cc: Jim Keniston
Cc: Ananth N Mavinakayanahalli
Cc: Christoph Hellwig
Cc: Frank Ch. Eigler
Cc: Jason Baron
Cc: K.Prasad
Cc: Peter Zijlstra
Cc: Srikar Dronamraju
Cc: systemtap
Cc: DLE
Cc: Frederic Weisbecker
LKML-Reference:
Signed-off-by: Ingo Molnar -
Check hyphen only command argument, because perf-probe doesn't
support event recording feature yet.e.g.
# perf probe -
Error: '-' is not supported.Signed-off-by: Masami Hiramatsu
Cc: Paul Mackerras
Cc: Arnaldo Carvalho de Melo
Cc: Steven Rostedt
Cc: Jim Keniston
Cc: Ananth N Mavinakayanahalli
Cc: Christoph Hellwig
Cc: Frank Ch. Eigler
Cc: Jason Baron
Cc: K.Prasad
Cc: Peter Zijlstra
Cc: Srikar Dronamraju
Cc: systemtap
Cc: DLE
Cc: Frederic Weisbecker
LKML-Reference:
Signed-off-by: Ingo Molnar -
Fix show_perf_probe_event() to check the result of e_snprintf().
Signed-off-by: Masami Hiramatsu
Cc: Paul Mackerras
Cc: Arnaldo Carvalho de Melo
Cc: Steven Rostedt
Cc: Jim Keniston
Cc: Ananth N Mavinakayanahalli
Cc: Christoph Hellwig
Cc: Frank Ch. Eigler
Cc: Jason Baron
Cc: K.Prasad
Cc: Peter Zijlstra
Cc: Srikar Dronamraju
Cc: systemtap
Cc: DLE
Cc: Frederic Weisbecker
LKML-Reference:
Signed-off-by: Ingo Molnar -
Clean up struct session in builtin-probe.c, including
change need_dwarf to bool and move listing flag into
struct session as list_events flag.This also changes parse_perf_probe_event() interface
due to code readability.Signed-off-by: Masami Hiramatsu
Cc: Paul Mackerras
Cc: Arnaldo Carvalho de Melo
Cc: Steven Rostedt
Cc: Jim Keniston
Cc: Ananth N Mavinakayanahalli
Cc: Christoph Hellwig
Cc: Frank Ch. Eigler
Cc: Jason Baron
Cc: K.Prasad
Cc: Peter Zijlstra
Cc: Srikar Dronamraju
Cc: systemtap
Cc: DLE
Cc: Frederic Weisbecker
LKML-Reference:
Signed-off-by: Ingo Molnar
15 Dec, 2009
14 commits
-
Add a newline do fix this problem:
ERROR: perf-diff.txt: line 31: closing [blockdef-listing]
delimiter expectedSigned-off-by: Arnaldo Carvalho de Melo
Cc: Frédéric Weisbecker
Cc: Mike Galbraith
Cc: Peter Zijlstra
Cc: Paul Mackerras
LKML-Reference:
Signed-off-by: Ingo Molnar -
Fix the short line displayed by 'perf' and also fix some other
details in the longer text.Cc: Arnaldo Carvalho de Melo
Cc: Peter Zijlstra
Cc: Mike Galbraith
Cc: Paul Mackerras
Cc: Frederic Weisbecker
LKML-Reference:
Signed-off-by: Ingo Molnar -
Update the perf-trace page with new and missing options and
remove some unused ones.Signed-off-by: Tom Zanussi
Cc: fweisbec@gmail.com
Cc: rostedt@goodmis.org
LKML-Reference:
Signed-off-by: Ingo Molnar -
Allow scripts to be recorded/executed by simply specifying the
script root name (the script name minus extension) along with
'record' or 'report' to 'perf trace'.The script names shown by 'perf trace -l' can be directly used
to run the command-line contained within the corresponding
'-record' and '-report' versions of scripts in the scripts/*/bin
directories.For example, to record the trace data needed to run the
wakeup-latency.pl script, the user can easily find the name of
the corresponding script from the script list and invoke it
using 'perf trace record', without having to remember the
details of how to do the same thing using the lower-level perf
trace command-line options:root@tropicana:~# perf trace -l
List of available trace scripts:
workqueue-stats workqueue stats (ins/exe/create/destroy)
wakeup-latency system-wide min/max/avg wakeup latency
rw-by-file r/w activity for a program, by file
check-perf-trace useless but exhaustive test script
rw-by-pid system-wide r/w activityroot@tropicana:~# perf trace record wakeup-latency
^C[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.296 MB perf.data (~12931
samples) ]To run the wakeup-latency.pl script using the captured data,
change 'record' to 'report' in the command-line:root@tropicana:~# perf trace report wakeup-latency
wakeup_latency stats:
total_wakeups: 65
avg_wakeup_latency (ns): 22417
min_wakeup_latency (ns): 3470
max_wakeup_latency (ns): 223311perf trace Perl script stopped
If the script takes options, thay can be simply added to the end
of the 'report' invocation:root@tropicana:~# perf trace record rw-by-file
^C[ perf record: Woken up 2 times to write data ]
[ perf record: Captured and wrote 0.782 MB perf.data (~34171
samples) ]root@tropicana:~# perf trace report rw-by-file perf
file read counts for perf:
fd # reads bytes_requested
------ ---------- -----------
122 1934 1980416
120 1 32file write counts for perf:
fd # writes bytes_written
------ ---------- -----------
3 4006 280568perf trace Perl script stopped
Signed-off-by: Tom Zanussi
Cc: fweisbec@gmail.com
Cc: rostedt@goodmis.org
LKML-Reference:
Signed-off-by: Ingo Molnar -
Lists the available perf trace scripts, one per line e.g.:
root@tropicana:~# perf trace -l
List of available trace scripts:
workqueue-stats workqueue stats (ins/exe/create/destroy)
wakeup-latency system-wide min/max/avg wakeup latency
rw-by-file r/w activity for a program, by file
check-perf-trace useless but exhaustive test script
rw-by-pid system-wide r/w activityTo be consistent with the other listing options in perf, the
current latency trace option was changed to '-L', and '-l' is
now used to access the script listing as:To create the list, it searches each scripts/*/bin directory for
files ending with "-report" and reads information found in
certain comment lines contained in those shell scripts:- if the comment line starts with "description:", the rest of the
line is used as a 'half-line' description. To keep each line in
the list to a single line, the description should be limited to 40
characters (the rest of the line contains the script name and
args)- if the comment line starts with "args:", the rest of the line
names the args the script supports. Required args should be
surrounded by <> brackets, optional args by [] brackets.The current scripts in scripts/perl/bin have also been updated
with description: and args: comments.Signed-off-by: Tom Zanussi
Cc: fweisbec@gmail.com
Cc: rostedt@goodmis.org
LKML-Reference:
Signed-off-by: Ingo Molnar -
The return value from perl_run() is currently ignored, but it
should be checked and used to exit perf if there are problems
loading the script.Signed-off-by: Tom Zanussi
Cc: fweisbec@gmail.com
Cc: rostedt@goodmis.org
LKML-Reference:
Signed-off-by: Ingo Molnar -
README and Makefile.PL don't need to be installed for Perl
run-time support.Signed-off-by: Tom Zanussi
Cc: fweisbec@gmail.com
Cc: rostedt@goodmis.org
LKML-Reference:
Signed-off-by: Ingo Molnar -
One oversight of the original scripting_ops patch was a lack of
support for passing args to handler scripts. This adds
argc/argv to the start_script() scripting_op, and changes the
rw-by-file script to take 'comm' arg rather than the 'perf'
value currently hard-coded. It also takes the opportunity to do
some related minor cleanup.Signed-off-by: Tom Zanussi
Cc: fweisbec@gmail.com
Cc: rostedt@goodmis.org
LKML-Reference:
Signed-off-by: Ingo Molnar -
perf top, report and annotate all define their own symbol_conf,
it should be static.Signed-off-by: Frederic Weisbecker
Cc: Peter Zijlstra
Cc: Arnaldo Carvalho de Melo
Cc: Paul Mackerras
LKML-Reference:
Signed-off-by: Ingo Molnar -
I guess it is enough to show some examples:
[root@doppio linux-2.6-tip]# rm -f perf.data*
[root@doppio linux-2.6-tip]# ls -la perf.data*
ls: cannot access perf.data*: No such file or directory
[root@doppio linux-2.6-tip]# 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) ]
[root@doppio linux-2.6-tip]# ls -la perf.data*
-rw------- 1 root root 74440 2009-12-14 20:03 perf.data
[root@doppio linux-2.6-tip]# 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 (~2692 samples) ]
[root@doppio linux-2.6-tip]# ls -la perf.data*
-rw------- 1 root root 74280 2009-12-14 20:03 perf.data
-rw------- 1 root root 74440 2009-12-14 20:03 perf.data.old
[root@doppio linux-2.6-tip]# perf diff | head -5
1 -34994580 /lib64/libc-2.10.1.so _IO_vfprintf_internal
2 -15307806 [kernel.kallsyms] __kmalloc
3 +1 +3665941 /lib64/libc-2.10.1.so __GI_memmove
4 +4 +23508995 /lib64/libc-2.10.1.so _int_malloc
5 +7 +38538813 [kernel.kallsyms] __d_lookup
[root@doppio linux-2.6-tip]# perf diff -p | head -5
1 +1.00% /lib64/libc-2.10.1.so _IO_vfprintf_internal
2 [kernel.kallsyms] __kmalloc
3 +1 /lib64/libc-2.10.1.so __GI_memmove
4 +4 /lib64/libc-2.10.1.so _int_malloc
5 +7 -1.00% [kernel.kallsyms] __d_lookup
[root@doppio linux-2.6-tip]# perf diff -v | head -5
1 361449551 326454971 -34994580 /lib64/libc-2.10.1.so _IO_vfprintf_internal
2 151009241 135701435 -15307806 [kernel.kallsyms] __kmalloc
3 +1 101805328 105471269 +3665941 /lib64/libc-2.10.1.so __GI_memmove
4 +4 78041440 101550435 +23508995 /lib64/libc-2.10.1.so _int_malloc
5 +7 59536172 98074985 +38538813 [kernel.kallsyms] __d_lookup
[root@doppio linux-2.6-tip]# perf diff -vp | head -5
1 9.00% 8.00% +1.00% /lib64/libc-2.10.1.so _IO_vfprintf_internal
2 3.00% 3.00% [kernel.kallsyms] __kmalloc
3 +1 2.00% 2.00% /lib64/libc-2.10.1.so __GI_memmove
4 +4 2.00% 2.00% /lib64/libc-2.10.1.so _int_malloc
5 +7 1.00% 2.00% -1.00% [kernel.kallsyms] __d_lookup
[root@doppio linux-2.6-tip]#This should be enough for diffs where the system is non
volatile, i.e. when one doesn't updates binaries.For volatile environments, stay tuned for the next perf tool
feature: a buildid cache populated by 'perf record', managed by
'perf buildid-cache' a-la ccache, and used by all the report
tools.Signed-off-by: Arnaldo Carvalho de Melo
Cc: "Paul E. McKenney"
Cc: Stephen Hemminger
Cc: Frédéric Weisbecker
Cc: Mike Galbraith
Cc: Peter Zijlstra
Cc: Paul Mackerras
Cc: Paul E. McKenney
LKML-Reference:
Signed-off-by: Ingo Molnar -
Suggested-by: Steven Rostedt
Signed-off-by: Arnaldo Carvalho de Melo
Cc: Frédéric Weisbecker
Cc: Mike Galbraith
Cc: Peter Zijlstra
Cc: Paul Mackerras
LKML-Reference:
Signed-off-by: Ingo Molnar -
And it is also needed by 'perf diff'.
Signed-off-by: Arnaldo Carvalho de Melo
Cc: Frédéric Weisbecker
Cc: Mike Galbraith
Cc: Peter Zijlstra
Cc: Paul Mackerras
LKML-Reference:
Signed-off-by: Ingo Molnar -
Signed-off-by: Arnaldo Carvalho de Melo
Cc: Frédéric Weisbecker
Cc: Mike Galbraith
Cc: Peter Zijlstra
Cc: Paul Mackerras
LKML-Reference:
Signed-off-by: Ingo Molnar -
All tools had copies, and perf diff would have to specify a
sample_type_check method just for copying it.Signed-off-by: Arnaldo Carvalho de Melo
Cc: Frédéric Weisbecker
Cc: Mike Galbraith
Cc: Peter Zijlstra
Cc: Paul Mackerras
LKML-Reference:
Signed-off-by: Ingo Molnar
