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| author |   Qiaowei Ren <qiaowei.ren@intel.com> | 2018-03-01 14:38:11 +0800 |
|---|---|---|
| committer | Qiaowei Ren <qiaowei.ren@intel.com> | 2018-03-01 14:38:11 +0800 |
| commit | 7da45d65be36d36b880cc55c5036e96c24b53f00 (patch) | |
| tree | d4f944eb4f8f8de50a9a7584ffa408dc3a3185b2 /src/ceph/doc/dev/perf.rst | |
| parent | 691462d09d0987b47e112d6ee8740375df3c51b2 (diff) | |
remove ceph code
This patch removes initial ceph code, due to license issue.
Change-Id: I092d44f601cdf34aed92300fe13214925563081c
Signed-off-by: Qiaowei Ren <qiaowei.ren@intel.com>
Diffstat (limited to 'src/ceph/doc/dev/perf.rst')
| -rw-r--r-- | src/ceph/doc/dev/perf.rst | 39 |
1 files changed, 0 insertions, 39 deletions
diff --git a/src/ceph/doc/dev/perf.rst b/src/ceph/doc/dev/perf.rst deleted file mode 100644 index 5e42255..0000000 --- a/src/ceph/doc/dev/perf.rst +++ /dev/null @@ -1,39 +0,0 @@ -Using perf -========== - -Top:: - - sudo perf top -p `pidof ceph-osd` - -To capture some data with call graphs:: - - sudo perf record -p `pidof ceph-osd` -F 99 --call-graph dwarf -- sleep 60 - -To view by caller (where you can see what each top function calls):: - - sudo perf report --call-graph caller - -To view by callee (where you can see who calls each top function):: - - sudo perf report --call-graph callee - -:note: If the caller/callee views look the same you may be - suffering from a kernel bug; upgrade to 4.8 or later. - -Flamegraphs ------------ - -First, get things set up:: - - cd ~/src - git clone https://github.com/brendangregg/FlameGraph - -Run ceph, then record some perf data:: - - sudo perf record -p `pidof ceph-osd` -F 99 --call-graph dwarf -- sleep 60 - -Then generate the flamegraph:: - - sudo perf script | ~/src/FlameGraph/stackcollapse-perf.pl > /tmp/folded - ~/src/FlameGraph/flamegraph.pl /tmp/folded > /tmp/perf.svg - firefox /tmp/perf.svg |