seán sullivan tbyuhwseanosnet mon 22 oct 2007 222446 0100 diarmuid bourke wrote hi wanted ask anyone encountered issues using 3ware raid card ubuntu feisty redbrick recently got new encom storage server theres severe disk io issues theres report launchpad similar issue httpsbugslaunchpadnetubuntusourcelinuxsource2620bug113532 wondering would worth rolling dapper kernel 3ware driver theres better solution reason using feisty btw 3ware driver builtin model 3ware card get id always advise using 3wares drivers opposed ones provided kernel generally decent performance increase also using blockdev increase performance blockdev setra num devcard id run series tests going 16000 28000 place num 3ware kb excellent resource issues 3ware cards assume latest firmware though read release notes updating couple months back released firmwaredriver decreased ext3 performance favour cifs performance remember fs using ext3 several tweakable options creation time increase performance block size stripe size switching scheduler may also help noticed huge performance difference switching cfq deadline take look sysblocksdcqueuescheduler last couple months interesting threads centos mailing list httplistscentosorgpipermailcentos relation 3ware issues may give ideas directly related know excellent information least wed 06 aug 2008 232825 0100 ilug 3ware driver issue ubuntu feisty