diff options
Diffstat (limited to 'tools/perf/Documentation')
| -rw-r--r-- | tools/perf/Documentation/perf-bench.txt | 22 | ||||
| -rw-r--r-- | tools/perf/Documentation/perf-mem.txt | 4 | ||||
| -rw-r--r-- | tools/perf/Documentation/perf-probe.txt | 2 | ||||
| -rw-r--r-- | tools/perf/Documentation/perf-top.txt | 1 |
4 files changed, 28 insertions, 1 deletions
diff --git a/tools/perf/Documentation/perf-bench.txt b/tools/perf/Documentation/perf-bench.txt index 7065cd6fbdfc..4464ad770d51 100644 --- a/tools/perf/Documentation/perf-bench.txt +++ b/tools/perf/Documentation/perf-bench.txt @@ -48,6 +48,12 @@ SUBSYSTEM 'mem':: Memory access performance. +'numa':: + NUMA scheduling and MM benchmarks. + +'futex':: + Futex stressing benchmarks. + 'all':: All benchmark subsystems. @@ -187,6 +193,22 @@ Show only the result with page faults before memset. --no-prefault:: Show only the result without page faults before memset. +SUITES FOR 'numa' +~~~~~~~~~~~~~~~~~ +*mem*:: +Suite for evaluating NUMA workloads. + +SUITES FOR 'futex' +~~~~~~~~~~~~~~~~~~ +*hash*:: +Suite for evaluating hash tables. + +*wake*:: +Suite for evaluating wake calls. + +*requeue*:: +Suite for evaluating requeue calls. + SEE ALSO -------- linkperf:perf[1] diff --git a/tools/perf/Documentation/perf-mem.txt b/tools/perf/Documentation/perf-mem.txt index 888d51137fbe..1d78a4064da4 100644 --- a/tools/perf/Documentation/perf-mem.txt +++ b/tools/perf/Documentation/perf-mem.txt @@ -18,6 +18,10 @@ from it, into perf.data. Perf record options are accepted and are passed through "perf mem -t <TYPE> report" displays the result. It invokes perf report with the right set of options to display a memory access profile. +Note that on Intel systems the memory latency reported is the use-latency, +not the pure load (or store latency). Use latency includes any pipeline +queueing delays in addition to the memory subsystem latency. + OPTIONS ------- <command>...:: diff --git a/tools/perf/Documentation/perf-probe.txt b/tools/perf/Documentation/perf-probe.txt index b715cb71592b..1513935c399b 100644 --- a/tools/perf/Documentation/perf-probe.txt +++ b/tools/perf/Documentation/perf-probe.txt @@ -136,6 +136,8 @@ Each probe argument follows below syntax. 'NAME' specifies the name of this argument (optional). You can use the name of local variable, local data structure member (e.g. var->field, var.field2), local array with fixed index (e.g. array[1], var->array[0], var->pointer[2]), or kprobe-tracer argument format (e.g. $retval, %ax, etc). Note that the name of this argument will be set as the last member name if you specify a local data structure member (e.g. field2 for 'var->field1.field2'.) 'TYPE' casts the type of this argument (optional). If omitted, perf probe automatically set the type based on debuginfo. You can specify 'string' type only for the local variable or structure member which is an array of or a pointer to 'char' or 'unsigned char' type. +On x86 systems %REG is always the short form of the register: for example %AX. %RAX or %EAX is not valid. + LINE SYNTAX ----------- Line range is described by following syntax. diff --git a/tools/perf/Documentation/perf-top.txt b/tools/perf/Documentation/perf-top.txt index cdd8d4946dba..976b00c6cdb1 100644 --- a/tools/perf/Documentation/perf-top.txt +++ b/tools/perf/Documentation/perf-top.txt @@ -87,7 +87,6 @@ Default is to monitor all CPUS. --realtime=<priority>:: Collect data with this RT SCHED_FIFO priority. --s <symbol>:: --sym-annotate=<symbol>:: Annotate this symbol. |
