Starting hal daemon incredibly decrease my hard drive performance

Sjoerd Simons sjoerd at luon.net
Thu Nov 4 10:48:02 PST 2004


On Thu, Nov 04, 2004 at 01:31:28PM -0500, David Zeuthen wrote:
> On Thu, 2004-11-04 at 17:46 +0100, Sjoerd Simons wrote:
> > > It's probably caused by the fact that your cdrom and your harddisk are
> > > sharing one ide bus. The polling of hdb may affect the hdparm
> > > measurement. You may try this with the udi for your cdrom:
> > 
> > Just talked to someone on IRC with basically the same problem. Turning off
> > polling on the cdrom drive did indeed fix the problem. 
> > 
> > Why do media checks degrade performance so much ?
> > 
> 
> Wait a second - the only thing we know is that polling for media change
> makes the numbers from hdparm lower - I'm not sure at all that
> performance is degraded; someone should check with other benchmarks
> and/or real-world tests.

I asked him that (as i don't really trust hdparm) and according to him
realworld performance also degraded.

He's in the CC, so i guess he should be able to give some numbers :)

  Sjoerd
-- 
Whatever occurs from love is always beyond good and evil.
		-- Friedrich Nietzsche
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