Re: Abysmal interactive performance on 2.4.linus

[Jeff Garzik <jgarzik@mandrakesoft.com>]

Frank de Lange wrote:
> 
> On a 768 MB SMP box (2x466 MHz Celeron), I see some weird problems with
> interactive performance on 2.4.15pre{1,2}. A good example of this is the
> following scenario:
> 
>  - copy a large file (eg. an iso image file) to a directory on the same
>    (reiserfs in this case) filesystem, or...
>  - do a filesystem comparison between a CD and the original file (with cmp
>    /mnt/cdrom/<filename> /mnt/reiserfs/1/data/<original_file_location>, using a
>    PLEXTOR Model: CD-ROM PX-40TS SCSI CD-ROM drive),
> 
>  - and THEN (while the copy or comparison runs) try any simple command (like
>    'ls /mnt/reiserfs/1/data' or 'top' or anything else...).
> 
> Response time is abysmal, a simple 'ls /some/dir' takes tens of seconds to
> start. Once the command is running, performance is normal. Try this when a
> cdrecord session is running and you'll get a buffer underrun.

Can you try 2.4.13ac6 (not 7/8), and 2.2.20, and post a comparison?

-- 
Jeff Garzik      | Only so many songs can be sung
Building 1024    | with two lips, two lungs, and one tongue.
MandrakeSoft     |         - nomeansno