On Thu, Dec 10, 2009 at 12:39 AM, Asdo <asdo@xxxxxxxxxxxxx> wrote: > Hi all, > > I'm copying a bagzillion of files (14TB) from a 26disk MD-raid 6 array to a > 16disk MD-raid 6 array. > Filesystems are XFS for both arrays. > Kernel is 2.6.31 ubuntu generic-14 > Performance is very disappointing, going from 150MB/sec to 22MB/sec > depending apparently to the size of files it encounters. 150MB/sec is when > files are 40-80MB in size, 22MB/sec is when files are 1MB in size on > average, and I think I have seen around 10MB/sec when they are of 500KB > (this transfer at 10MB/sec was in parallel with another faster one however). This may not be related, but I have had some general problems regarding transfer rates in Ubuntu. Using a vanilla kernel seemed to help: http://kernel.ubuntu.com/~kernel-ppa/mainline/ -- Kristleifur -- 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
