On Tue, May 04, 2010 at 10:32:25AM +1000, Adam Nielsen wrote: > > 10MB/sec does seem extremely poor. we've had read slowness when Linux block > > device read-ahead was too small. Once properly configured, performance on > > RAID-5 went from 150MB/sec to 500MB/sec, so the difference is dramatic. we > > usually tune read-ahead (in Linux) buffers starting from 8MB to 32MB and > > benchmark to see what works best. but your problem may be elsewhere... we've > > never seen 10MB/sec... > > Have you got any pointers to where this can be adjusted? It seems > (according to Google) there are countless methods and patches, most of > which are for rather old kernel versions.
man blockdev blockdev --setra blocks /dev/sda It is part of util-linux-ng . HTH, Tino. -- "What we nourish flourishes." - "Was wir nähren erblüht." www.lichtkreis-chemnitz.de www.tisc.de _______________________________________________ Linux-PowerEdge mailing list [email protected] https://lists.us.dell.com/mailman/listinfo/linux-poweredge Please read the FAQ at http://lists.us.dell.com/faq
