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path: root/tools/perf/Documentation/perf-sched.txt
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2016-04-13perf sched map: Display only given cpusJiri Olsa1-0/+3
Introducing --cpus option that will display only given cpus. Could be used together with color-cpus option. $ perf sched map --cpus 0,1 *A0 309999.786924 secs A0 => rcu_sched:7 *. 309999.786930 secs *B0 . 309999.786931 secs B0 => rcuos/2:25 B0 *A0 309999.786947 secs Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1460467771-26532-9-git-send-email-jolsa@kernel.org [ Added entry to man page ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-04-13perf sched map: Color given cpusJiri Olsa1-0/+3
Adding --color-cpus option to display selected cpus with background color (red by default). It helps on navigating through the perf sched map output. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1460467771-26532-8-git-send-email-jolsa@kernel.org [ Added entry to man page ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-04-13perf sched map: Color given pidsJiri Olsa1-0/+3
Adding --color-pids option to display selected pids in color (blue by default). It helps on navigating through the 'perf sched map' output. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1460467771-26532-7-git-send-email-jolsa@kernel.org [ Added entry to man page ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-04-13perf sched: Add compact display optionJiri Olsa1-0/+7
Add compact map display that does not output the whole cpu matrix, only cpus that got event. $ perf sched map --compact *A0 1082427.094098 secs A0 => perf:19404 (CPU 2) A0 *. 1082427.094127 secs . => swapper:0 (CPU 1) A0 . *B0 1082427.094174 secs B0 => rcuos/2:25 (CPU 3) A0 . *. 1082427.094177 secs *C0 . . 1082427.094187 secs C0 => migration/2:21 C0 *A0 . 1082427.094193 secs *. A0 . 1082427.094195 secs *D0 A0 . 1082427.094402 secs D0 => rngd:968 *. A0 . 1082427.094406 secs . *E0 . 1082427.095221 secs E0 => kworker/1:1:5333 . E0 *F0 1082427.095227 secs F0 => xterm:3342 It helps to display sane output for small thread loads on big cpu servers. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1460467771-26532-4-git-send-email-jolsa@kernel.org [ Add entry in 'perf sched' man page ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2011-12-23perf report: Accept fifos as input fileRobert Richter1-1/+1
The default input file for perf report is not handled the same way as perf record does it for its output file. This leads to unexpected behavior of perf report, etc. E.g.: # perf record -a -e cpu-cycles sleep 2 | perf report | cat failed to open perf.data: No such file or directory (try 'perf record' first) While perf record writes to a fifo, perf report expects perf.data to be read. This patch changes this to accept fifos as input file. Applies to the following commands: perf annotate perf buildid-list perf evlist perf kmem perf lock perf report perf sched perf script perf timechart Also fixes char const* -> const char* type declaration for filename strings. v2: * Prevent potential null pointer access to input_name in builtin-report.c. Needed due to removal of patch "perf report: Setup browser if stdout is a pipe" Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1323248577-11268-5-git-send-email-robert.richter@amd.com Signed-off-by: Robert Richter <robert.richter@amd.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2011-09-29perf sched: Fix script command documentationJiri Olsa1-3/+3
Fixed leftover from trace -> script rename. Link: http://lkml.kernel.org/r/1317114995-4534-1-git-send-email-jolsa@redhat.com Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Jiri Olsa <jolsa@redhat.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2010-12-01perf sched: Document missing optionsShawn Bohrer1-2/+16
Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <1291168642-11402-11-git-send-email-shawn.bohrer@gmail.com> Signed-off-by: Shawn Bohrer <shawn.bohrer@gmail.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2010-04-08perf: cleanup some DocumentationRandy Dunlap1-2/+2
Correct typos in perf bench & perf sched help text. Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>, Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <20100331113100.cc898487.randy.dunlap@oracle.com> Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
2009-09-13perf sched: Add 'perf sched trace', improve documentationIngo Molnar1-3/+19
Alias 'perf sched trace' to 'perf trace', for workflow completeness. Add a bit of documentation for perf sched. 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: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-13perf: Add 'perf sched' toolIngo Molnar1-0/+25
This turn-key tool allows scheduler measurements to be conducted and the results be displayed numerically. First baby step towards that goal: clone the new command off of perf trace. Fix a few other details along the way: - add (minimal) perf trace documentation - reorder a few places - list perf trace in the mainporcelain list as well as it's a very useful utility. 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: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>