Re: [CentOS] Best mkfs.ext2 performance options on RAID5 in CentOS 4.2

On Tue, 1 Nov 2005 at 11:43am, Aleksandar Milivojevic wrote

What I found with an old(er) 3ware 7500-8 (does not use same device driver as 9xxx cards) in RAID5 configuration was that it makes big difference using ext2 or ext3 (doubles the write speed, no effect on read speed). With ext3 I used internal journal (external migh have helped, but haven't tested it).

I tested with an external journal on a hardware (8506-2) RAID1 of 2 WD Raptor drives, and it made no difference. What *did* make a difference was using XFS (via the centosplus kernel), but I didn't trust that in production. I ended up going to software RAID, which got good local speeds. I'm discovering now, though, that the NFS performance sucks.