Messages in this thread | | | Subject | Re: [RFC PATCH] arm64/fpsimd: Don't disable softirq when touching FPSIMD/SVE state | From | Julien Grall <> | Date | Thu, 11 Apr 2019 15:10:28 +0100 |
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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
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