diff options
| author | Sam Liao <phyomh@gmail.com> | 2011-06-07 23:49:46 +0800 |
|---|---|---|
| committer | Frederic Weisbecker <fweisbec@gmail.com> | 2011-06-30 00:24:30 +0200 |
| commit | d797fdc5c5c245fbb05f553e68cb95d962fbdd01 (patch) | |
| tree | aa28d98f61df71a2fba55e2b4b526c77aec8de0a /tools/perf/Documentation | |
| parent | af07ce3e77d3b24ab1d71fcc5833d41800f23b2b (diff) | |
perf tools: Add inverted call graph report support.
Add "caller/callee" option to support inverted butterfly report,
in the inverted report (with caller option), the call graph start
from the callee's ancestor. Users can use such view to catch system's
performance bottleneck from a sysprof like view. Using this option
with specified sort order like pid gives us high level view of call
graph statistics.
Also add "-G" alias for inverted call graph.
Signed-off-by: Sam Liao <phyomh@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: David Ahern <dsahern@gmail.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Diffstat (limited to 'tools/perf/Documentation')
| -rw-r--r-- | tools/perf/Documentation/perf-report.txt | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt index 8ba03d6e5398..cfa8e513d0fb 100644 --- a/tools/perf/Documentation/perf-report.txt +++ b/tools/perf/Documentation/perf-report.txt @@ -80,15 +80,24 @@ OPTIONS --dump-raw-trace:: Dump raw trace in ASCII. --g [type,min]:: +-g [type,min,order]:: --call-graph:: - Display call chains using type and min percent threshold. + Display call chains using type, min percent threshold and order. type can be either: - flat: single column, linear exposure of call chains. - graph: use a graph tree, displaying absolute overhead rates. - fractal: like graph, but displays relative rates. Each branch of the tree is considered as a new profiled object. + - Default: fractal,0.5. + + order can be either: + - callee: callee based call graph. + - caller: inverted caller based call graph. + + Default: fractal,0.5,callee. + +-G:: +--inverted:: + alias for inverted caller based call graph. --pretty=<key>:: Pretty printing style. key: normal, raw |