Date: Tue, 11 Aug 2009 14:44:40 +0300 From: Krassimir Slavchev <krassi@bulinfo.net> To: Nathan Le Nevez <nathan@lenevez.net.au> Cc: "freebsd-performance@freebsd.org" <freebsd-performance@freebsd.org> Subject: Re: Very slow I/O performance on HP BL465c Message-ID: <4A8159A8.3030206@bulinfo.net> In-Reply-To: <C6A6F02B.5D66%nathan@lenevez.net.au> References: <C6A6F02B.5D66%nathan@lenevez.net.au>
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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi, What is the output of 'vmstat -i' and 'camcontrol tags da0' ? I have a ML350 running 7-STABLE with same controller and disks and performance is almost same as your good server. Nathan Le Nevez wrote: > Hi, > > I'm running 7.2-p3 on 2x HP BL465c blade servers, one of which performs very > poorly. Both have the same RAID controller and 2 x 146GB 10k SAS disks > configured in RAID-1. Both controllers have write-cache enabled. Both > servers are running the same BIOS and firmware versions. Neither servers are > running any services other than sshd. > > Blade with good performance (2 x Opteron 2218, 8GB RAM): > > ciss0: <HP Smart Array E200i> port 0x4000-0x40ff mem > 0xfdf80000-0xfdffffff,0xfdf70000-0xfdf77fff irq 19 at device 8.0 on pci80 > ciss0: [ITHREAD] > da0 at ciss0 bus 0 target 0 lun 0 > da0: <COMPAQ RAID 1 VOLUMES MOPK:> AFPi xCePdU D#i2r Leacuntc hAcecde!s > s SCSI-5 device > da0: 135.168MB/s transfers > dSaM0P:: CAoP CPU #3 Launched! > mmand Queueing Enabled > da0: 139979MB (286677120 512 byte sectors: 255H 32S/T 35132C) > > Blade with bad performance (2 x Opteron 2352, 16GB RAM): > > ciss0: <HP Smart Array E200i> port 0x4000-0x40ff mem > 0xfdf80000-0xfdffffff,0xfdf70000-0xfdf77fff irq 19 at device 8.0 on pci80 > ciss0: [ITHREAD] > da0 at ciss0 bus 0 target 0 lun 0 > da0: <COMPAQ RAID 1 VOLUME OK> Fixed Direct Access SCSI-5 device > da0: 135.168MB/s transfers > da0: Command Queueing Enabled > da0: 139979MB (286677120 512 byte sectors: 255H 32S/T 35132C) > > # dbench -t 10 1 2 3 4 > blade1 183.456 MB/sec 236.86 MB/sec 299.28 MB/sec 192.675 MB/sec > blade2 6.97931 MB/sec 9.42293 MB/sec 10.2482 MB/sec 12.407 MB/sec > > Any help/ideas would be greatly appreciated. I have run through all the > Insight diagnostics tools and it fails to find anything wrong with the slow > server. > > Cheers, > Nathan > > _______________________________________________ > freebsd-performance@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-performance > To unsubscribe, send any mail to "freebsd-performance-unsubscribe@freebsd.org" > -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (FreeBSD) iD8DBQFKgVmoxJBWvpalMpkRAvilAJsGF0J34SgD34EcBxX8Ic8Hq6OUBACghpBL C7YgX2qmvgb7WSvgFhDrKl8= =JDJx -----END PGP SIGNATURE-----
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