Call for testers: FPU changes
Mike Tancsa
mike at sentex.net
Wed Nov 17 19:19:08 UTC 2010
On 11/17/2010 11:35 AM, Kostik Belousov wrote:
> Meantime, the similar change may be beneficial for padlock(4) too.
> f you are going to test it, please note that most likely, openssl padlock
> engine does not use padlock(4), I do not know for sure.
>
> diff --git a/sys/crypto/via/padlock.c b/sys/crypto/via/padlock.c
> index 77e059b..ba63093 100644
> --- a/sys/crypto/via/padlock.c
> +++ b/sys/crypto/via/padlock.c
Patch applied cleanly
Full results at the bottom of
http://www.tancsa.com/fpu.html
On large blocks, version 1 vs the above patch show no significant
difference. This is with openssl using the cryptodev engine. I also
compared to the openssl padlock engine which gave interesting results!
0(via)# cat version1.txt | sed -e 's/k//g' | awk '{print $6}' > 1
0(via)# cat version2.txt | sed -e 's/k//g' | awk '{print $6}' > 2
0(via)# ministat 1 2
x 1
+ 2
N Min Max Median Avg Stddev
x 30 2591851.6 6645345.1 4326340.6 4227917.6 1083181.2
+ 30 2574883.9 8830282.8 4033610.4 4241195.6 1519334.8
No difference proven at 95.0% confidence
0(via)# cat version1.txt | sed -e 's/k//g' | awk '{print $5}' > 1
0(via)# cat version2.txt | sed -e 's/k//g' | awk '{print $5}' > 2
0(via)# ministat 1 2
N Min Max Median Avg Stddev
x 30 1124673.3 2320883.7 1527677.1 1550631.9 295165.4
+ 30 1069788.2 2508865.7 1594506.2 1588193.2 389414.33
No difference proven at 95.0% confidence
0(via)#
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