> -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] Behalf Of > Alexis Yushin > Sent: Thursday, May 19, 2005 8:14 PM > To: freebsd-performance@freebsd.org > Subject: Bad 3ware 9000 performance 5.4? > > > Hi, > > I've been browsing through the mailing list archive, but > could not find the > answer/conclusion/solution to this... > > Running FreeBSD 5.4... three machines with twe/3ware 8000 and > three twa/ > 3ware 9500-8 controllers. All of them running RAID 1+0 > without write cache > since we dont have battery backup unit. All of them Seagate 7200 SATA. > > I get about 46Mb/s write on the 8000 series and only 5(!)MB/s > on the 9500 series. > > How is this possible? Machines are in production so I can do > very little > testing... Any ideas? >
You have to have write caching enabled to get better write performance. If you see bad numbers even with caching enabled, check to see if all drives/cables are ok. > > _______________________________________________ > freebsd-performance@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-performance > To unsubscribe, send any mail to > "[EMAIL PROTECTED]" > _______________________________________________ freebsd-performance@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-performance To unsubscribe, send any mail to "[EMAIL PROTECTED]"