Nope. The last thing I put in was error recovery fix's, but that should not effect performance. I'm not sure whether that when into 2.6.10.
Do you know if http://linux-scsi.bkbits.net:8080/scsi-rc-fixes-2.6 is down or moved? I can't seem to see this website, to see whether there were any patches applied outside what I have sent. I will validate performance here. Eric Moore LSI Logic On Tuesday, March 01, 2005 12:12 AM, Andrew Morton wrote: > > > > Did anything change in the mpt fusion driver? > > I'm seeing the same thing, again with mpt-fusion. 38MB/sec > when it should > be getting >60. > > > Begin forwarded message: > > Date: Mon, 28 Feb 2005 22:03:57 -0800 > From: [EMAIL PROTECTED] > To: [EMAIL PROTECTED] > Subject: [Bugme-new] [Bug 4268] New: SCSI performance > regression in 2.6.10 > > > http://bugme.osdl.org/show_bug.cgi?id=4268 > > Summary: SCSI performance regression in 2.6.10 > Kernel Version: 2.6.10 > Status: NEW > Severity: normal > Owner: [EMAIL PROTECTED] > Submitter: [EMAIL PROTECTED] > > > Distribution: Debian 'unstable', pristine 2.6.10 kernel > Hardware Environment: HP rx2600 (ia64), LSI 53C1030 U320 SCSI > host (Fusion MPT) > Problem Description: There is a quite severe performance > regression in 2.6.10 > when using SCSI disk drives. (I've tested against 2.4.20, > 2.6.8 and 2.6.9, none > of which exhibit this problem) > > Steps to reproduce: dd if=/dev/sdXX of=/dev/null bs=1048576 > count=10000 > (streaming read the first 10GB of scsi disk XX) > > In 2.6.10, with a Fujitsu 10Krpm SCSI disk I get 34MB/sec, > with a Maxtor 15Krpm > SCSI disk I get 37MB/sec. CPU usage of 'dd' is ~2% and > %system time is about the > same. > > Using 2.6.9 (or earlier), I get 63MB/sec for the 10K disk and > 95MB/sec for the > 15K disk. CPU usage goes up in proportion. (OK, fair enough.) > > This is a real performance issue (shows up everywhere, not > just in 'dd'), and > affects both reads and writes. Does anyone know what's going on here? > > ------- You are receiving this mail because: ------- > You are on the CC list for the bug, or are watching someone who is. > - > 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 > - 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
