Subject: Very slow machine, all meta bufs in use.
To: None <netbsd-help@NetBSD.org>
From: Wouter Schoot <wouter@schoot.org>
List: netbsd-help
Date: 03/12/2004 18:16:24
Hi folks,

I recently installed NetBSD 1.6.2 on my AMD Athlon 700, and gave it a
200GB Western Digital disc. After reboot, it runs for a moment, but when 
I compile something (take KDE3 for example - any big package seems to 
trigger this behaviour), it quickly fills up all metadata buffers:

There are  4935 metadata buffers using            19740 kBytes of memory.
There are 11984 pages for cached file data using  47936 kBytes of memory.
There are  3653 pages for executables using       14612 kBytes of memory.

File System          Bufs used   %   kB in use   %  Bufsize kB   %  Util %
/                         2467  49       19694  99       19712  99      99
/var                         3   0          17   0          20   0      85

Total:                    2470  50       19711  99       19732  99      99


Top header gives:

load averages:  2.26,  1.54,  0.74 
 
                18:14:44
128 processes: 126 sleeping, 1 zombie, 1 on processor
CPU states:  1.5% user,  0.0% nice,  1.5% system,  0.5% interrupt, 96.5% 
idle
Memory: 107M Act, 1012K Wired, 15M Exec, 46M File, 229M Free
Swap: 701M Total, 701M Free

So there's almost no activity on the cpu, while the load is high, and 
discactivity seems low. I probably hit some buffer-limit, but I don't 
know howto raise it. I noticed that the "4935 metadata buffers" always 
have the same ammount, and never rises, changes.

Well, what happens may be obvious, compiling takes *ages*.
While KDE3 compiles, make extract in /usr/pkgsrc/mail/mutt takes over 30 
minutes, however, the cpu time is only a few seconds.

Dmesg shows nothing unusual, nor does /var/log/messages, I use GENERIC 
kernel that came with 1.6.2, it has 384 MB RAM.

I really want a solution for this, because this is  getting very annoying.

Thanks in advance,

Wouter