lkml.org 
[lkml]   [2000]   [Oct]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRE: ide/disk perf?

Le 30-Oct-2000, Mohammad A. Haque écrivait :
> Could someone who knows ide and drive inside and out (Andre?) please
> take a look at these figures? Am I forgetting to do something (or doing
> something I'm not suposed to) to get the best numbers? I thought I'd be
> able to get more than ~4MB/sec off the HPT366 and a UDMA66 drive.

It could be unrelated, but I had problems several times with Maxtor drives
recently; Their performances are usually high (some models give >20 Mb/s
both reads and writes), but under some conditions that I couldn't narrow down
yet, the read throughput is stuck to the floor (a few megabytes/sec) until
next reboot. The write performance is always ok.

I don't think it's a chipset problem, with a box filled with several Maxtor
drives and I observe the problem with some disk and not others at the same time.

I don't think it's a Linux problem either, since it can be observed with
Windows benchmarking tools too.


As a side note, I usually get better results tweaking disks using kernel
compiling options ("default to DMA", "autotune chipset", ...) than using hdparm
-d1 and friends, give it a try.


--
Linux blade.workgroup 2.4.0-test10 #1 Sat Oct 28 18:00:09 CEST 2000 i686 unknown
1:09pm up 1 day, 19:01, 2 users, load average: 1.04, 1.08, 1.09

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 12:45    [W:0.045 / U:43.804 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site