Ray Van Dolson wrote: > Hello fellow sysadmins! > > I've assembled a whitebox system with a SuperMicro motherboard, case, > 8GB of memory and a single quad core Xeon processor. > > I have two 9650SE-8LPML cards (8 ports each) in each server with 12 1TB > SATA drives total. Three drives per "lane" on each card. > > CentOS 5.2 x86_64. > > I'm looking for advice on tuning this thing for performance. > Especially for the role of performing as either an NFS datastore for > VMware or an iSCSI one. > > I set up two volumes (one for each card); one RAID6 and one RAID5. I > used the default 64K block size and am trying various filesystems in > tandem with it. I stumbled across the following recommendations on > 3Ware's site: > > echo "64" > /sys/block/sda/queue/max_sectors_kb > blockdev --setra 16384 /dev/sda > echo "512" > /sys/block/sda/queue/nr_requests > > But am wondering if there are other things I should be looking at, > including changing the IO scheduler. Any particular options I should > use with filesystem creation to match up with my RAID block size? > > I also noted that there is a newer 3Ware driver (2.26.08.004) available > than the one that comes stock with CentOS 5.2 (2.26.02.008). Not sure > if I can expect performance improvement by "upgrading", and I imagine > I'd have to mess with my initrd file in any case or boot with a driver > disk option and blacklist the built-in driver... > > Thanks for any feedback! > > Ray > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos > Ray, I've had good performance from xfs with large filesystems. What kind of files are you looking to use, lots of smaller files or large media files?? -------------- next part -------------- A non-text attachment was scrubbed... Name: rkampen.vcf Type: text/x-vcard Size: 121 bytes Desc: not available URL: <http://lists.centos.org/pipermail/centos/attachments/20090115/9bf39fab/attachment-0005.vcf>