Date: Sun, 23 Jul 2006 17:27:10 -0400 From: Mike Tancsa <mike@sentex.net> To: questions@freebsd.org Subject: Re: Slow Write Performance on 3ware controller Message-ID: <5ih7c29tikhncmg1tmbpku6iv9df80dn8i@4ax.com> In-Reply-To: <200607231053.58927.jhorne@dfwlp.org> References: <44C26B7A.30200@firebadger.net> <ef10de9a0607230347k303d07fw36b4a37bbf4a794a@mail.gmail.com> <44C357CA.4040801@firebadger.net> <200607231053.58927.jhorne@dfwlp.org>
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On Sun, 23 Jul 2006 10:53:58 -0500, in sentex.lists.freebsd.questions you wrote: > >all this 3ware discussion inspired me to check out my 6.1-releng server = and=20 >see how its 3ware card stacks up to the previously posted scores. > >[root@zeus ~]# diskinfo -t /dev/twed2 >/dev/twed2 > 512 # sectorsize > 360099151872 # mediasize in bytes (335G) > 703318656 # mediasize in sectors > 43779 # Cylinders according to firmware. > 255 # Heads according to firmware. > 63 # Sectors according to firmware. Here is an areca 4 port PCIe in RAID 1+0 diskinfo -t da0 da0 512 # sectorsize 239999647744 # mediasize in bytes (224G) 468749312 # mediasize in sectors 29178 # Cylinders according to firmware. 255 # Heads according to firmware. 63 # Sectors according to firmware. Seek times: Full stroke: 250 iter in 1.328484 sec =3D 5.314 msec Half stroke: 250 iter in 1.342900 sec =3D 5.372 msec Quarter stroke: 500 iter in 2.021294 sec =3D 4.043 msec Short forward: 400 iter in 0.817074 sec =3D 2.043 msec Short backward: 400 iter in 1.972321 sec =3D 4.931 msec Seq outer: 2048 iter in 0.237593 sec =3D 0.116 msec Seq inner: 2048 iter in 0.204264 sec =3D 0.100 msec Transfer rates: outside: 102400 kbytes in 0.886375 sec =3D 115527 kbytes/sec middle: 102400 kbytes in 1.106318 sec =3D 92559 kbytes/sec inside: 102400 kbytes in 1.806561 sec =3D 56682 kbytes/sec Seagate ST3120827AS And an old 7810 in RAID5 with ST3500630As diskinfo -t twed1 twed1 512 # sectorsize 1500320366592 # mediasize in bytes (1.4T) 2930313216 # mediasize in sectors 182403 # Cylinders according to firmware. 255 # Heads according to firmware. 63 # Sectors according to firmware. Seek times: Full stroke: 250 iter in 4.408301 sec =3D 17.633 msec Half stroke: 250 iter in 4.335265 sec =3D 17.341 msec Quarter stroke: 500 iter in 6.919564 sec =3D 13.839 msec Short forward: 400 iter in 2.318452 sec =3D 5.796 msec Short backward: 400 iter in 2.268990 sec =3D 5.672 msec Seq outer: 2048 iter in 0.537223 sec =3D 0.262 msec Seq inner: 2048 iter in 0.557811 sec =3D 0.272 msec Transfer rates: outside: 102400 kbytes in 1.708543 sec =3D 59934 kbytes/sec middle: 102400 kbytes in 1.717575 sec =3D 59619 kbytes/sec inside: 102400 kbytes in 1.615723 sec =3D 63377 kbytes/sec -------------------------------------------------------- Mike Tancsa, Sentex communications http://www.sentex.net Providing Internet Access since 1994 mike@sentex.net, (http://www.tancsa.com)
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