RE: buggy raid checksumming selection?

[Randal, Phil]

> On Fri, Jan 23, 2004 at 11:40:53AM -0200, Evaldo Gardenali wrote:
> 
>  > Uhh. correct me if I am wrong, but shouldnt it select the 
> fastest algorithm?
> 
> No, if it can choose a function which avoids polluting the cache over
> one that doesn't, it will.  Even if that means slightly less 
> raw throughput
> 
> This comes up time after time, maybe we need a printk in that case ?
> 
> 	Dave

I'm not suggesting that anyone waste any time over this, but are there any
"real world" benchmarks of the "fastest" vs "non cache-polluting"
algorithms.

Could there be any situations whereby even with cache-pollution we'd get
better performance?

I know it depends on the workload mix and amount of I/O, but...

Just curious.

Phil
---------------------------------------------
Phil Randal
Network Engineer
Herefordshire Council
Hereford, UK
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/