On Wed, 2007-06-20 at 19:06 -0400, Jeff Garzik wrote: > Carlo Wood wrote: > > hdparm -tT gives over 160 MB/s for my tripple 10k rpm Raptor RAID5 > > on 2.6.18, as expected. > > > > In 2.6.22-rc5 this dropped to only 60 MB/s ! > > > > Is this a known issue? > > > > I also measured it with bonnie; I get 108 MB/s reading speed on > > 2.6.18 and only 68 MB/s on 2.6.22-rc5. > > More info needed... kernel config, before-and-after dmesg output, lspci > output.
also do a echo 60 > /proc/sys/vm/dirty_ratio first to see if that helps - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
