On Thu, Aug 21, 2008 at 03:15:08PM +1000, Dave Chinner wrote: > On Thu, Aug 21, 2008 at 05:46:00AM +0300, Szabolcs Szakacsits wrote: > > On Thu, 21 Aug 2008, Dave Chinner wrote: > > Everything is default. > > > > % rpm -qf =mkfs.xfs > > xfsprogs-2.9.8-7.1 > > > > which, according to ftp://oss.sgi.com/projects/xfs/cmd_tars, is the > > latest stable mkfs.xfs. Its output is > > > > meta-data=/dev/sda8 isize=256 agcount=4, agsize=1221440 blks > > = sectsz=512 attr=2 > > data = bsize=4096 blocks=4885760, imaxpct=25 > > = sunit=0 swidth=0 blks > > naming =version 2 bsize=4096 > > log =internal log bsize=4096 blocks=2560, version=2 > > = sectsz=512 sunit=0 blks, lazy-count=0 > > realtime =none extsz=4096 blocks=0, rtextents=0 > > Ok, I thought it might be the tiny log, but it didn't improve anything > here when increased the log size, or the log buffer size. One thing I just found out - my old *laptop* is 4-5x faster than the 10krpm scsi disk behind an old cciss raid controller. I'm wondering if the long delays in dispatch is caused by an interaction with CTQ but I can't change it on the cciss raid controllers. Are you using ctq/ncq on your machine? If so, can you reduce the depth to something less than 4 and see what difference that makes? Cheers, Dave. -- Dave Chinner david@xxxxxxxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
