Re: [linus:master] [x86] 4817f70c25: stress-ng.mmapaddr.ops_per_sec 63.0% regression
From: Rik van Riel
Date: Fri Jan 31 2025 - 16:20:30 EST
On Thu, 2025-01-30 at 01:33 +0800, Qi Zheng wrote:
>
> stress-ng: info: [671] stressor bogo ops real time usr time
> sys
> time bogo ops/s bogo ops/s
> stress-ng: info: [671] (secs) (secs)
> (secs) (real time) (usr+sys time)
> stress-ng: info: [671] mmapaddr 19803127 60.01 235.20
> 1146.76 330007.29 14329.74
How stable are these numbers?
It looks like the bogo ops/s number without the local_bh_disable
was 17233711, while the number is 19803127 after.
That looks like a 14% speedup.
This is not back to the 28440843 you had before
MMU_GATHER_RCU_TABLE_FREE was enabled unconditionally,
but it does reduce the size of the regression
considerably, from 40% to 31%.
--
All Rights Reversed.