diff options
Diffstat (limited to 'tools/perf/Documentation/perf-record.txt')
| -rw-r--r-- | tools/perf/Documentation/perf-record.txt | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/tools/perf/Documentation/perf-record.txt b/tools/perf/Documentation/perf-record.txt index 58986f4cc190..de269430720a 100644 --- a/tools/perf/Documentation/perf-record.txt +++ b/tools/perf/Documentation/perf-record.txt @@ -406,7 +406,8 @@ symbolic names, e.g. on x86, ax, si. To list the available registers use --intr-regs=ax,bx. The list of register is architecture dependent. --user-regs:: -Capture user registers at sample time. Same arguments as -I. +Similar to -I, but capture user registers at sample time. To list the available +user registers use --user-regs=\?. --running-time:: Record running and enabled time for read events (:S) @@ -478,6 +479,11 @@ Also at some cases executing less output write syscalls with bigger data size can take less time than executing more output write syscalls with smaller data size thus lowering runtime profiling overhead. +-z:: +--compression-level[=n]:: +Produce compressed trace using specified level n (default: 1 - fastest compression, +22 - smallest trace) + --all-kernel:: Configure all used events to run in kernel space. |