Re: Disk schedulers

[Pavel Machek]

Hi!

> whom should I blame about disk schedulers?
> 
> I have the following setup:
> 1Gb network
> 2GB RAM
> disk write speed about 20MB/s
> 
> If I'm scping file (about 500MB) from the network (which is faster than the
> local disk), any process is totally unable to read anything from the local disk
> till the scp finishes. It is not caused by low free memory, while scping
> I have 500MB of free memory (not cached or buffered).
> 
> I tried cfq and anticipatory scheduler, none is different.

Is cat /dev/zero > file enough to reproduce this?

ext3 filesystem?

Will cat /etc/passwd work while machine is unresponsive?
							Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/