On Wed, Jun 19, 2024 at 07:31:57PM +0200, Helge Deller wrote:
> Commit c055e3eae0f1 ("crypto: xor - use ktime for template benchmarking")
> switched from using jiffies to ktime-based performance benchmarking.
>
> This works nicely on machines which have a fine-grained ktime()
> clocksource as e.g. x86 machoines with TSC.
> But other machines, e.g. my 4-way HP PARISC server, don't have such
> fine-grained clocksources, which is why it seems that 800 xor loops
> take zero seconds, which then calculates in the logs as:
>
> xor: measuring software checksum speed
> 8regs : -1018167296 MB/sec
> 8regs_prefetch : -1018167296 MB/sec
> 32regs : -1018167296 MB/sec
> 32regs_prefetch : -1018167296 MB/sec
Ard, could you please take a look at this patch when you get a
chance? Thanks!
--
Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
