On 5/23/2012 6:46 PM, Stan Hoeppner wrote: > On 5/23/2012 2:49 PM, David Brown wrote: > >> It looks like Shaohua Li has done some testing, found that there is a >> slow-down even with just 2 or 4 disks, and has written patches to fix it >> (for raid1 and raid10 so far), which is very nice. > > Ahh, thanks David. I wasn't aware of Shaohua Li's > work on this. Got a link to his documentation and patches, or article, > by chance? My Google searches only turn up Shaohua Li's TRIM patches. I don't believe the issue we're discussing has anything to do with TRIM, though I can't be 100% sure as Mark didn't provide much detail of his thread ceiling problem, and I don't have a suitable system to do proper testing. Again it would be nice to have a link to Shaohua Li's work to which you refer to determine if it's applicable to this issue. -- Stan -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
