lkml.org 
[lkml]   [2019]   [Apr]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [RFC PATCH] arm64/fpsimd: Don't disable softirq when touching FPSIMD/SVE state
From
Date
Hi Dave,

On 4/4/19 11:52 AM, Dave Martin wrote:
> On Fri, Feb 08, 2019 at 04:55:13PM +0000, Julien Grall wrote:
> I'm not sure how this patch will affect context switch overhead, so it
> would be good to see hackbench numbers (or similar).

I finally have some numbers for this patch. The benchmark was ran using
Linux 5.1-rc4 and defconfig.

On Juno2:
* hackbench 100 process 1000 (10 times)
* .7% quicker

On ThunderX 2:
* hackbench 1000 process 1000 (20 times)
* 3.4% quicker

I am happy to try other benchmark if you think it is useful.

Anyway, I will resend the series with the comments addressed.

Cheers,

--
Julien Grall

\
 
 \ /
  Last update: 2019-04-11 16:11    [W:0.216 / U:2.356 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site