On Wed, 2014-10-01 at 07:28 +0200, Ingo Molnar wrote: > If you compare an strace of AIM7 steady state and 'perf bench > lock' steady state, is it comparable, i.e. do the syscalls and > other behavioral patterns match up?
With more than 1000 users I'm seeing:
- 33.74% locking-creat [kernel.kallsyms] [k] mspin_lock
◆
+ mspin_lock
▒
+ __mutex_lock_slowpath
▒
+ mutex_lock
▒
- 7.97% locking-creat [kernel.kallsyms] [k]
mutex_spin_on_owner
▒
+ mutex_spin_on_owner
▒
+ __mutex_lock_slowpath
▒
+ mutex_lock
Lower users count just shows the syscall entries.
Of course, the aim7 setup was running on a ramdisk, thus avoiding any IO
overhead in the traces.
Thanks,
Davidlohr
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