Re: high system cpu load during intense disk i/o

[Rafał Bilski <rafalbilski@interia.pl>]

> > Just tested (plain curiosity).
> > via82cxxx average result @533MHz:
> > /dev/hda:
> > Timing cached reads:   232 MB in  2.00 seconds = 115.93 MB/sec
> > Timing buffered disk reads:   64 MB in  3.12 seconds =  20.54 MB/sec
> > pata_via average result @533MHz:
> > /dev/sda:
> > Timing cached reads:   234 MB in  2.01 seconds = 116.27 MB/sec
> > Timing buffered disk reads:   82 MB in  3.05 seconds =  26.92 MB/sec
>
> Interesting! I haven't tried libata myself on that system, I only have 
> remote access to it so I'm a bit afraid...
Just change root=/dev/hda1 to append="root=/dev/sda1" in lilo.conf.
And change fstab. If You don't change "/" then system will go into single 
user mode after reboot.
> Rafal, I hope that system you run hdparm on isn't the archlinux one! Is 
> it easy to load an old kernel (even two years old) and do the same test? 
> If it is, please let me know of the results.
I don't think it is possible. If I remember right kernel can't be older  
then glibc kernel headers.
Btw. My disk is 20GB 2,5" ATA33. I wonder how 26MB/s is possible. I don't 
expect more.
> Thanks in advance,
> Dimitris
Regards
Rafał

----------------------------------------------------------------------
Wszystko czego potrzebujesz latem: kremy do opalania, 
stroje kapielowe, maly romans 

> > > http://link.interia.pl/f1b15

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