From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mukul Kotwani Subject: Re: Performance Date: Fri, 2 Aug 2002 16:01:24 -0700 (PDT) Sender: linux-scsi-owner@vger.kernel.org Message-ID: <20020802230124.59457.qmail@web14007.mail.yahoo.com> References: <20020802081655.B15152@hpti.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: In-Reply-To: <20020802081655.B15152@hpti.com> List-Id: linux-scsi@vger.kernel.org To: Craig Tierney Cc: linux-scsi@vger.kernel.org Running IOMeter against the Qlogic with IBM 15kRPM JBODS, Im getting: 1) For 512 byte 100%random reads, I get *just* 260 IOPs per sec.On Windows with IOMeter, I get about 7000 foir the same config. 2) For 512k 100%sequential reads, I see 30MB per sec. Windows gives 85MB/sec I see the similar performance with my driver on Linux. I dont know whyit is so low, cannot be that low as compared to windws, a few MB/sec or a few hundred IOPs per sec difference is OK, but this difference is TOO huge. I tried a bunch of diff host template params, but doesnt seem to make a difference. Has anyone dont any testing with IOMeter? Or is there any other toold I can use to test IOPs/througput? Thanks, Mukul --- Craig Tierney wrote: > For the Qlogic 2200F I am able to push 100 MB/s for > reads and writes using multiple threads to a > filesystem > that is striped across mutliple host ports on the > SAN. Backend RAID is a > Data Direct Networks SAN. For a single thread to a > ext3 filesystem > and 2.4.18, I get about 70 MB/s for reads and > writes. > > I have no Iops/sec numbers. > > Craig > > > > Hello! > > Does anyone have any performace numbers of a > Qlogic > > HBA? No of IOps/sec Max MBs /sec? > > > > Thanks! > > M > > > > > > __________________________________________________ > > Do You Yahoo!? > > Yahoo! Health - Feel better, live better > > http://health.yahoo.com > > - > > To unsubscribe from this list: send the line > "unsubscribe linux-scsi" in > > the body of a message to majordomo@vger.kernel.org > > More majordomo info at > http://vger.kernel.org/majordomo-info.html > > -- > Craig Tierney (ctierney@hpti.com) > - > To unsubscribe from this list: send the line > "unsubscribe linux-scsi" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html __________________________________________________ Do You Yahoo!? Yahoo! Health - Feel better, live better http://health.yahoo.com