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Re: performance problem

On Sat, 2005-01-29 at 00:22 +0100, tobias wrote:
> Hello everybody,
> recently I decided to switch from fedora to Debian Sarge. The 
> installation via the netinstall disk image went through smoothly and I 
> am a happy new Debain user now.
> But: there is a strange performance problem which wasn't there before. 
> Using Gnome or KDE every couple of seconds the mouse poiner "stumbles", 
> regardless if I use a USB or ps/2 device. There is also a short delay 
> moving windows or even displaying text while typing. Moreover smooth 
> playing of mp3s is not possible - seems to be the same problem.
> Using top or similar programs I wasn't able to identify a process which 
> eats up my system performance. The CPU has something around 5%, load 
> average around 0.4.
> Has anybody encountered similar problems? I would appreciate hints how 
> to deal with this problem.
> Or could it be that the hardware is too old? It's a 700MHz Athlon, 
> 512MB... should be able to play mp3, I think. On fedora, there was a 2.4 
> kernel, now it's 2.6.8. Naively, I would expected a performance gain.

Could it be that your disk(s) aren't running in DMA mode?

$ dmesg | grep ^hda
hda: Maxtor 6Y120P0, ATA DISK drive
hda: max request size: 128KiB
hda: 240121728 sectors (122942 MB) w/7936KiB Cache, CHS=65535/16/63,
hda: cache flushes supported

$ /sbin/hdparm /dev/hda

 multcount    = 16 (on)
 IO_support   =  1 (32-bit)
 unmaskirq    =  1 (on)
 using_dma    =  1 (on)  <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
 keepsettings =  0 (off)
 readonly     =  0 (off)
 readahead    = 256 (on)
 geometry     = 65535/16/63, sectors = 122942324736, start = 0

Ron Johnson, Jr.
Jefferson, LA USA
PGP Key ID 8834C06B I prefer encrypted mail.

I am *not* my children's friend; I am their parent.

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