On Sun, Nov 28, 1999 at 05:55:24PM +0000, Darren Nickerson wrote:
...
> Thanks for the reply Jakob. :-P I used to be the same . . . now I'm bitter and
> twisted. Well, mebbe just twisted.
>
;)
...
> > How ``bad'' is the performance ?
>
> It was at one point about 4MB/s . . . I nuked that kernel ages ago though, and
> am back on 2.2.13ac2, which reports itself as 2.2.13ac1, and things are OK
> again . . .
4MB/s is low. hdparm -t /dev/mdX should give you pretty much the speed you can
get from one single drive, probably more like 10-12 MB/s.
And yes, -ac2 identifies itself as -ac1, it's a feature :)
...
> > Some marketing guys did one hell of a job, promoting ATA66. There's a lot
> > of people out there, believing that it makes a difference...
>
> Yup, sorry to have been so naive.
Don't be, I had to test it out myself too. There's just nothing like good
old marketing hype ;)
>
> > Oh well, in three years any decent IDE drive will do 50 MB/s from the platter,
> > and all those ATA66 cards will come in handy. :)
>
> I live in hope. Disk I/O is such an annoying bottleneck . . . raid makes it
> more bearable of course. Benching my raid5 array now . . .
>
> -------Sequential Output-------- ---Sequential Input-- --Random--
> -Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
> Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
> 2000 7818 98.9 31010 28.0 13601 28.3 8328 97.5 36487 26.3 113.4 1.5
>
> I have a feeling this is not bad at all ;-) Time to play witch chunk size and
> mke2fs options.
Nice !
Use 4k blocksize on the ext2. The chunksize doesn't matter much on bonnie tests,
but you might see a difference in real-world usage. I'm afraid I can't contribute
with many tips there... We could use another benchmark than bonnie...
--
................................................................
: [EMAIL PROTECTED] : And I see the elder races, :
:.........................: putrid forms of man :
: Jakob Østergaard : See him rise and claim the earth, :
: OZ9ABN : his downfall is at hand. :
:.........................:............{Konkhra}...............:
