Gregory Leblanc wrote:
>>--snip--<<
> > I conclude that on my system there is an ide saturation point (or
> > bottleneck) around 40MB/s
> Didn't the LAND5 people think that there was a bottleneck around 40MB/Sec at
> some point? Anybody know if they were talking about IDE drives? Seems
> quite possible that there aren't any single drives that are hitting this
> speed, so it's only showing up with RAID.
> Greg
Is there any place where benchmark results are listed? I've finally
gotten my RAID-1 running and am trying to see if the performance is what
I should expect or if there is some other issue:
Running "hdparm -t /dev/md0" a few times:
Timing buffered disk reads: 64 MB in 3.03 seconds = 21.12 MB/sec
Timing buffered disk reads: 64 MB in 2.65 seconds = 24.15 MB/sec
Timing buffered disk reads: 64 MB in 3.21 seconds = 19.94 MB/sec
And bonnie:
-------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
800 5402 90.9 13735 13.7 7223 15.0 5502 85.0 14062 8.9
316.7 2.8
I had expected better performance with the system: Adaptec 2940U2W with
2x Seagate Cheetah (LVD) 9.1G drives; single PII 400Mhz; 512MB ECC RAM;
ASUS P3B-F 100Mhz.
I have to say the RAID-1 works very well in my crash tests, and that's
the most important thing.
Sorry for taking this off the original thread.
Regards,
Jeff Hill
