Re: [Sheflug] Re: slow drives...

[Craig Andrews <nospam [at] fishbot.org.uk>]

I tried setting the 32bit flag on my drive, and gained 0.3 Mb/S. Looks
like it's maxed out. Anyhow, my 15Gb EIDE drive manages:

64Mb in 6.38 seconds = 10.03Mb/sec

And the 8.4 (slave on same channel):

64Mb in 6.6 seconds = 9.7Mb/sec

I only discovered about two days ago that DMA was disabled for both
drives. Since I reenabled it, jerky mouse movement and system slowdown
during busy periouds has dramatically reduced. Annoying that my machine
(and all SuSE based machines I have tried) run updatedb as user 'nobody'
whenever it feels like it. During this, my 15Gb drive managed just:

64Mb in 36.04 seconds = 1.78Mb/sec

Pitiful, ain't it. Is there any way to speed up the system during this
period. It's darn irritating ;-)

Craig Andrews
craig@fishbot.org.uk

- - - - - - - - - - - - - - - - - -
Life would be so much easier if we 
could just look at the source code.
- - - - - - - - - - - - - - - - - -

On Fri, 22 Sep 2000, Barrie Bremner wrote:

> > Will Newton wrote:
> > 
> > Timing buffered disk reads:  64 MB in  12.90 seconds = 4.96 MB/sec
> > 
> > Think this is a bit slow.  Might be that the Linux system isn't quite
> > set up the right way ?
> > 
> 
>  Definitely slow! These are my 5.4k and 7.2k EIDE drives, although I
> have tweaked them a little with hdparm:
> 
> /dev/hda:
>  Timing buffered disk reads:  64 MB in  6.07 seconds = 10.54 MB/sec
> 
> /dev/hdc:
>  Timing buffered disk reads:  64 MB in  5.39 seconds = 11.87 MB/sec
> 
> 
> --
> Barrie J. Bremner
> 
> Email:     TheEnglishman [at] ecosse.net
>            (PGP public key available at pgp.mit.edu)
> 
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> 
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> Mobile:    UK 07968 792975
> 
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