On Tue, Dec 11, 2012 at 08:10:20PM +0800, Alex Shi wrote:
> Another testing of parallel compress with pigz on Linus' git tree.
> results show we get much better performance/power with powersaving and
> balance policy:
>
> testing command:
> #pigz -k -c -p$x -r linux* &> /dev/null
>
> On a NHM EP box
> powersaving balance performance
> x = 4 166.516 /88 68 170.515 /82 71 165.283 /103 58
> x = 8 173.654 /61 94 177.693 /60 93 172.31 /76 76
This looks funny: so "performance" is eating less watts than
"powersaving" and "balance" on NHM. Could it be that the average watts
measurements on NHM are not correct/precise..? On SNB they look as
expected, according to your scheme.
Also, shouldn't you have the shortest compress times with "performance"?
>
> On a 2 sockets SNB EP box.
> powersaving balance performance
> x = 4 190.995 /149 35 200.6 /129 38 208.561 /135 35
> x = 8 197.969 /108 46 208.885 /103 46 213.96 /108 43
> x = 16 205.163 /76 64 212.144 /91 51 229.287 /97 44
Ditto here, compress times with "performance" are not the shortest. Or
does "performance" mean something else? :-)
Thanks.
--
Regards/Gruss,
Boris.
Sent from a fat crate under my desk. Formatting is fine.
--
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
