diff options
Diffstat (limited to 'tools/perf/Documentation')
| -rw-r--r-- | tools/perf/Documentation/perf-stat.txt | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-stat.txt b/tools/perf/Documentation/perf-stat.txt index 29bdcfa93f04..785f0e2bcfac 100644 --- a/tools/perf/Documentation/perf-stat.txt +++ b/tools/perf/Documentation/perf-stat.txt @@ -308,6 +308,14 @@ use --per-die in addition to -a. (system-wide). The output includes the die number and the number of online processors on that die. This is useful to gauge the amount of aggregation. +--per-cache:: +Aggregate counts per cache instance for system-wide mode measurements. By +default, the aggregation happens for the cache level at the highest index +in the system. To specify a particular level, mention the cache level +alongside the option in the format [Ll][1-9][0-9]*. For example: +Using option "--per-cache=l3" or "--per-cache=L3" will aggregate the +information at the boundary of the level 3 cache in the system. + --per-core:: Aggregate counts per physical processor for system-wide mode measurements. This is a useful mode to detect imbalance between physical cores. To enable this mode, @@ -379,6 +387,14 @@ Aggregate counts per processor socket for system-wide mode measurements. --per-die:: Aggregate counts per processor die for system-wide mode measurements. +--per-cache:: +Aggregate counts per cache instance for system-wide mode measurements. By +default, the aggregation happens for the cache level at the highest index +in the system. To specify a particular level, mention the cache level +alongside the option in the format [Ll][1-9][0-9]*. For example: Using +option "--per-cache=l3" or "--per-cache=L3" will aggregate the +information at the boundary of the level 3 cache in the system. + --per-core:: Aggregate counts per physical processor for system-wide mode measurements. |