We have HP ProLiant DL370 G6 server with HP SA P410i raid controller, running under CentOS 5.5 x86_64. Some configuration details: 24Gb RAM, 10xHDD SAS 3,5'' 15krpm in RAID1+0, 50/50 read/write in accel. settings, ext3 filesystem. I did some tests with IOzone and there are counters: http://pastebin.com/HZEG1wTD What are you think about I/O performance? Are these counters generally good or bad for such configuration? Thanks.
Yes, that's pretty good to be honest, certainly the cache seems more write-biased than a 50/50 split would suggest and your test hasn't blown out the cache so it's difficult to see the real write performance but random reads are pretty good. Overall I'd be happy.