lkml.org 
[lkml]   [2001]   [Dec]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: severe slowdown with 2.4 series w/heavy disk access
vda wrote:

> >
> > total used free shared buffers
> > cached
> > Mem: 417472 412192 5280 0 20632
> > 315680
> > -/+ buffers/cache: 75880 341592
> > Swap: 136544 0 136544
>
> It seems you think your memory is used for no purpose,
> but kernel just keeps page cache in your RAM (kernel bugs are indeed
> possible, but your test does not show any buggy behavior IMHO).

My whole system slows down (commands take a long time to execute,
decompression slows, ls in an empty dir takes 10 sec)

>
> To verify this, you may repeat this experiment on a separate partition:
> 1) mount a partition
> 2) do the test as you described
> 3) umount the partition

I did this, and it uncached some, but I only had 60megs (out of 416)
free after unmounting the partition. The cache went down to about 5
megs, and in-use was at 350 megs.

>
> I believe you should see tons of free memory then, especially if your tarfile
> is also on that partition.
> Please report back if you would do the test.
> --
> vda
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:14    [W:0.047 / U:0.412 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site