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weird hard-disk performance prob
- To: Happy Linux Campers <linux-il(at-nospam)linux.org.il>
- Subject: weird hard-disk performance prob
- From: Miki Shapiro <aris(at-nospam)pharoe.com>
- Date: Sun, 25 Nov 2001 14:04:47 +0200 (IST)
- Delivered-To: linux.org.il-linux-il@linux.org.il
- Sender: linux-il-bounce(at-nospam)cs.huji.ac.il
Hi!
I'm getting this weird(?) behaviour from my system:
2 UDMA Harddisks, connected to a PIO4 motherboard (A Classic Pentium 200)
They read at 5-8 Megs/sec, but they write at 1MB/sec.
Is this normal?
I'm using reiser 3.x on SuSE7.0/2.4.9 kernel
13:54|[pharoe] root:~#hdparm -Tt /dev/hdc /dev/hdd
/dev/hdc:
Timing buffer-cache reads: 128 MB in 5.47 seconds = 23.40 MB/sec
Timing buffered disk reads: 64 MB in 7.57 seconds = 8.45 MB/sec
/dev/hdd:
Timing buffer-cache reads: 128 MB in 5.36 seconds = 23.88 MB/sec
Timing buffered disk reads: 64 MB in 12.50 seconds = 5.12 MB/sec
13:55|[pharoe] root:~#hdparm /dev/hdc /dev/hdd
/dev/hdc:
multcount = 16 (on)
I/O support = 1 (32-bit)
unmaskirq = 0 (off)
using_dma = 1 (on)
keepsettings = 0 (off)
nowerr = 0 (off)
readonly = 0 (off)
readahead = 8 (on)
geometry = 9972/128/63, sectors = 80418240, start = 0
/dev/hdd:
multcount = 16 (on)
I/O support = 1 (32-bit)
unmaskirq = 0 (off)
using_dma = 1 (on)
keepsettings = 0 (off)
nowerr = 0 (off)
readonly = 0 (off)
readahead = 8 (on)
geometry = 3649/255/63, sectors = 58633344, start = 0
---= Miki Shapiro =------------------
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---= ICQ: 3EE853 =-------------------
---= Windows Programmer in Rehab =---
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"If at first you don't succeed...
.. Skydiving is probbably not for you."
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