Re: bored and setting up a 3/4tb array at the office.
On Tue, Apr 08, 2003 at 07:31:16PM -0400, Mike Dresser wrote:
>
> 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
> mike 1G 25926 89 113641 36 29163 7 30287 96 49783 4 507.5 0
> ------Sequential Create------ --------Random Create--------
> -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
> files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
> 16 2830 91 +++++ +++ +++++ +++ 3093 99 +++++ +++ 9060 100
> mike,1G,25926,89,113641,36,29163,7,30287,96,49783,4,507.5,0,16,2830,91,+++++,+++,+++++,+++,3093,99,+++++,+++,9060,100
>
> /dev/sda1 979919788 32828 930863812 1% /space
>
> P4 2.53, 512 meg ram, ASUS P4B533 motherboard.
>
> 4 x 250 gig Maxtor DiamondMax 16(5400rpm), in raid 0, on a 3ware 7500-4,
> 2.4.20 kernel.
>
> Seems pretty reasonable speeds to me.
>
> And hdparm, for those who still believe in it being meaningful:
>
> /dev/sda:
> Timing buffer-cache reads: 128 MB in 0.34 seconds =376.47 MB/sec
Yep a P4 has good memory IO.
> Timing buffered disk reads: 64 MB in 1.43 seconds = 44.76 MB/sec
I have seen better speeds on single disks than that. That card should
be able to pull off much better numbers than that, although perhaps with
those slow poke drives it can't.
> Off to change this to a raid5 instead now(which is how this is being
> implemented)
Makes sense.
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