Sorry for delay in responding. We at LSI Logic are looking into these reports of poor performance coming from the U320. I will report later.
Eric Moore LSI Logic On Monday, March 21, 2005 4:27 PM, Andrew Morton wrote: > > > Holger Kiehl <[EMAIL PROTECTED]> wrote: > > > > Hello > > > > On a four CPU Opteron compiling the Fusion-MPT as module > gives much better > > performance when compiling it in, here some bonnie++ results: > > > > Version 1.03 ------Sequential Output------ > --Sequential Input- --Random- > > -Per Chr- --Block-- -Rewrite- -Per > Chr- --Block-- --Seeks-- > > Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP > K/sec %CP /sec %CP > > compiled in 15872M 38366 71 65602 22 18348 4 53276 84 > 57947 7 905.4 2 > > module 15872M 51246 96 204914 70 57236 14 59779 96 > 264171 33 923.0 2 > > > > This happens with 2.6.10, 2.6.11 and 2.6.11-bk2. Controller is a > > Symbios Logic 53c1030 PCI-X Fusion-MPT Dual Ultra320 SCSI. > > > > Why is there such a large difference? > > > > Holger, this problem remains unresolved, does it not? Have > you done any > more experimentation? > > I must say that something funny seems to be happening here. > I have two > MPT-based Dell machines, neither of which is using a modular driver: > > > akpm:/usr/src/25> 0 hdparm -t /dev/sda > > /dev/sda: > Timing buffered disk reads: 64 MB in 5.00 seconds = 12.80 MB/sec > > That's a bit disappointing. Running 2.6.9-rc2-mm2(!) with a > > SCSI storage controller: LSI Logic / Symbios Logic 53c1030 (rev 07) > > controller on disks which shudl hit 50MB/sec. > > > > > And > > bix:/home/akpm# hdparm -t /dev/sda > > /dev/sda: > Timing buffered disk reads: 114 MB in 3.03 seconds = 37.57 MB/sec > > with 2.6.11-rc4-mm1 using > > Fusion MPT SCSI Host driver 3.01.16 > scsi0 : ioc0: LSI53C1030, FwRev=01030600h, Ports=1, MaxQ=222, IRQ=25 > scsi1 : ioc1: LSI53C1030, FwRev=01030600h, Ports=1, MaxQ=222, IRQ=26 > Vendor: SEAGATE Model: ST3146807LW Rev: DS09 > Type: Direct-Access ANSI SCSI revision: 03 > > Better, but again I'd expect >50MB/sec. > - To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
