what process is eating my swap?

[Stijn Hoop]

Hi,

My swapspace is 99% used, but I can't find a way to figure out what process is
using it. top & ps don't seem to list swap usage of processes, and systat
-swap only lists the fact that 99% is in use.

[stijn at sandcat] </> uname -v
FreeBSD 4.8-RELEASE #0: Thu May  1 20:20:44 CEST 2003
[stijn at sandcat] </> top | grep Swap
Swap: 1536M Total, 1536M Used, 4K Free, 99% Inuse

I tried to use ps's VSZ column (which should be > swap if swap was really 99%
full, I thought) to determine it, but:

[stijn at sandcat] </> ps auxww | grep -v VSZ | awk 'BEGIN {vsz = 0} {vsz = vsz + $5} END {print vsz}'
788352

How can this be different from the top output?

Two things are suspect:

- I'm using a mfs /tmp, but that should be limited to 256M:

[stijn at sandcat] </> grep /tmp /etc/fstab
/dev/da0s1b             /tmp            mfs     rw,-s=524288    2       2
[stijn at sandcat] </> df -h /tmp
Filesystem   Size   Used  Avail Capacity  Mounted on
mfs:24       252M    68K   232M     0%    /tmp

- I'm using vinum for two RAID-5 arrays on 8 ATA disks, and was
  rsync'ing from one to the other at the time the kernel complained
  about lack of swapspace:

[stijn at sandcat] </> dmesg | grep swap
swap_pager_getswapspace: failed
pid 33932 (rsync), uid 0, was killed: out of swap space

  Could vinum somehow 'leak' swap space? My swap partition is on a regular
  SCSI disk, not on a vinum volume, so this seems farfetched but I'm a bit
  at a loss here.

Anyone have any clue? I need to have a bit of virtual memory on this
machine...

--Stijn

-- 
"An adult is a child who has more ethics and morals, that's all."
		-- Shigeru Miyamoto
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