Date: Wed, 12 Aug 2009 08:41:18 +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: <4A8255FE.5030500@bulinfo.net> In-Reply-To: <E4017C3E98A898429226B28DFA7730DBC165110841@talon.lenevez.net.au> References: <C6A6F02B.5D66%nathan@lenevez.net.au> <4A8159A8.3030206@bulinfo.net> <E4017C3E98A898429226B28DFA7730DBC165110841@talon.lenevez.net.au>
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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Looks okay. How your disks are partitioned and from where you are running dbench. Look at the -D option. For example I have: / without soft updates dbench -t 10 4 -> Throughput 72.7276 MB/sec 4 procs /var with soft updates -> Throughput 286.528 MB/sec 4 procs Are you sure that you are not running dbench on zfs or encrypted partition? Nathan Le Nevez wrote: > # vmstat -i > interrupt total rate > irq1: atkbd0 18 0 > irq5: ohci0 ohci1+ 1 0 > irq19: ciss0 144916 3 > irq21: uhci0 22 0 > cpu0: timer 80002970 1999 > irq256: bce0 17042 0 > cpu2: timer 79994902 1999 > cpu1: timer 79994975 1999 > cpu3: timer 79995009 1999 > cpu6: timer 79994957 1999 > cpu5: timer 79995046 1999 > cpu4: timer 79995041 1999 > cpu7: timer 79995057 1999 > Total 640129956 16000 > > # camcontrol tags da0 > (pass0:ciss0:0:0:0): device openings: 254 > > Just for clarification, both systems are running amd64. > > Thanks, > > Nathan > > -----Original Message----- > From: Krassimir Slavchev [mailto:krassi@bulinfo.net] > Sent: Tuesday, 11 August 2009 9:45 PM > To: Nathan Le Nevez > Cc: freebsd-performance@freebsd.org > Subject: Re: Very slow I/O performance on HP BL465c > > 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) iD8DBQFKglX+xJBWvpalMpkRAjxzAKCpNTFtnrA3GgJn66OPB3hwTAL1FgCdFPJf 5wxj8jV4jw/Hf6sYEwXUOEo= =9Inl -----END PGP SIGNATURE-----
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