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| author | Scott Wood <scottwood@freescale.com> | 2014-04-07 23:49:35 (GMT) |
|---|---|---|
| committer | Scott Wood <scottwood@freescale.com> | 2014-04-07 23:49:35 (GMT) |
| commit | 62b8c978ee6b8d135d9e7953221de58000dba986 (patch) | |
| tree | 683b04b2e627f6710c22c151b23c8cc9a165315e /tools/perf/Documentation/perf-trace.txt | |
| parent | 78fd82238d0e5716578c326404184a27ba67fd6e (diff) | |
| download | linux-fsl-qoriq-62b8c978ee6b8d135d9e7953221de58000dba986.tar.xz | |
Rewind v3.13-rc3+ (78fd82238d0e5716) to v3.12
Diffstat (limited to 'tools/perf/Documentation/perf-trace.txt')
| -rw-r--r-- | tools/perf/Documentation/perf-trace.txt | 37 |
1 files changed, 4 insertions, 33 deletions
diff --git a/tools/perf/Documentation/perf-trace.txt b/tools/perf/Documentation/perf-trace.txt index fae38d9..daccd2c 100644 --- a/tools/perf/Documentation/perf-trace.txt +++ b/tools/perf/Documentation/perf-trace.txt @@ -9,7 +9,6 @@ SYNOPSIS -------- [verse] 'perf trace' -'perf trace record' DESCRIPTION ----------- @@ -17,14 +16,9 @@ This command will show the events associated with the target, initially syscalls, but other system events like pagefaults, task lifetime events, scheduling events, etc. -This is a live mode tool in addition to working with perf.data files like -the other perf tools. Files can be generated using the 'perf record' command -but the session needs to include the raw_syscalls events (-e 'raw_syscalls:*'). -Alernatively, the 'perf trace record' can be used as a shortcut to -automatically include the raw_syscalls events when writing events to a file. - -The following options apply to perf trace; options to perf trace record are -found in the perf record man page. +Initially this is a live mode only tool, but eventually will work with +perf.data files like the other tools, allowing a detached 'record' from +analysis phases. OPTIONS ------- @@ -65,9 +59,7 @@ OPTIONS -m:: --mmap-pages=:: - Number of mmap data pages (must be a power of two) or size - specification with appended unit character - B/K/M/G. The - size is rounded up to have nearest pages power of two value. + Number of mmap data pages. Must be a power of two. -C:: --cpu:: @@ -86,27 +78,6 @@ the thread executes on the designated CPUs. Default is to monitor all CPUs. --input Process events from a given perf data file. --T ---time - Print full timestamp rather time relative to first sample. - ---comm:: - Show process COMM right beside its ID, on by default, disable with --no-comm. - --s:: ---summary:: - Show only a summary of syscalls by thread with min, max, and average times - (in msec) and relative stddev. - --S:: ---with-summary:: - Show all syscalls followed by a summary by thread with min, max, and - average times (in msec) and relative stddev. - ---tool_stats:: - Show tool stats such as number of times fd->pathname was discovered thru - hooking the open syscall return + vfs_getname or via reading /proc/pid/fd, etc. - SEE ALSO -------- linkperf:perf-record[1], linkperf:perf-script[1] |