Danie Roux wrote:
On Mon, Sep 06, 2004 at 02:09:47PM -0700, Mike Fedyk wrote:
Danie Roux wrote:
Using XFS, and kernel 2.6.8.
In the past two weeks I noticed that my PC load shoots up on anything that needs disk activity. The CPU's are quiet during all this:
top - 17:04:09 up 6:07, 3 users, load average: 2.25, 1.88, 1.37 Cpu0 : 10.3% us, 4.0% sy, 0.0% ni, 76.3% id, 8.7% wa, 0.7% hi, 0.0% Cpu1 : 11.3% us, 3.3% sy, 0.0% ni, 70.4% id, 15.0% wa, 0.0% hi, 0.0%
It gets so bad that the mouse starts jerking!
Does anyone have some advice on where to start looking for optimizing?
(hdparm -t looks fine)
How about disk subsystem info? IDE, SATA, or SCSI? Controller? Memory?
Are you reading a bunch of small files or large files?
Sorry about that:
512M RAM
Single IDE drive: "hda: 156301488 sectors (80026 MB) w/2048KiB Cache, CHS=16383/255/63, UDMA(100)"
On my running
hdparm: /dev/hda: Timing buffered disk reads: 168 MB in 3.03 seconds = 55.51 MB/sec
And a simple "aptitude dist-upgrade" would make my mouse start jerking.
Are you running any binary modules?
What is the prioroty of your X server?
run "vmstat 1" during the jerkiness. Is it swapping?
Mike
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