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author | Paul Moore <pmoore@redhat.com> | 2014-03-31 09:49:07 -0400 |
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committer | Paul Moore <pmoore@redhat.com> | 2014-03-31 09:49:07 -0400 |
commit | 6d32c850621b0be75777b9102b14f6268bbd9f0f (patch) | |
tree | fec325f5c1ae763f5eccb3ca1254ab9d9d164b05 /tools/perf/Documentation/perf-record.txt | |
parent | selinux: correctly label /proc inodes in use before the policy is loaded (diff) | |
parent | Linux 3.14 (diff) | |
download | linux-dev-6d32c850621b0be75777b9102b14f6268bbd9f0f.tar.xz linux-dev-6d32c850621b0be75777b9102b14f6268bbd9f0f.zip |
Merge tag 'v3.14' into next
Linux 3.14
Diffstat (limited to 'tools/perf/Documentation/perf-record.txt')
-rw-r--r-- | tools/perf/Documentation/perf-record.txt | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/tools/perf/Documentation/perf-record.txt b/tools/perf/Documentation/perf-record.txt index 43b42c4f4a91..c71b0f36d9e8 100644 --- a/tools/perf/Documentation/perf-record.txt +++ b/tools/perf/Documentation/perf-record.txt @@ -57,6 +57,8 @@ OPTIONS -t:: --tid=:: Record events on existing thread ID (comma separated list). + This option also disables inheritance by default. Enable it by adding + --inherit. -u:: --uid=:: @@ -66,8 +68,7 @@ OPTIONS --realtime=:: Collect data with this RT SCHED_FIFO priority. --D:: ---no-delay:: +--no-buffering:: Collect data without buffering. -c:: @@ -201,11 +202,16 @@ abort events and some memory events in precise mode on modern Intel CPUs. --transaction:: Record transaction flags for transaction related events. ---force-per-cpu:: -Force the use of per-cpu mmaps. By default, when tasks are specified (i.e. -p, --t or -u options) per-thread mmaps are created. This option overrides that and -forces per-cpu mmaps. A side-effect of that is that inheritance is -automatically enabled. Add the -i option also to disable inheritance. +--per-thread:: +Use per-thread mmaps. By default per-cpu mmaps are created. This option +overrides that and uses per-thread mmaps. A side-effect of that is that +inheritance is automatically disabled. --per-thread is ignored with a warning +if combined with -a or -C options. + +-D:: +--delay=:: +After starting the program, wait msecs before measuring. This is useful to +filter out the startup phase of the program, which is often very different. SEE ALSO -------- |