Summary: Where did swap go?

From: R. Marc Baldus <rbaldus_at_e-one.com>
Date: Wed Jul 14 2004 - 14:47:06 EDT
Summary:

I was not using the proper tool for monitoring swap.  The df command 
does not provide a reliable method for viewing the status of used swap 
space.

I will be keeping an eye on this server for it to happen again.  When it 
does,  I will be looking closely at the swap -s, swap -l, and vmstat 
command results.  I will also be watching the output from top.

Thanks for the excellent help!

Marc B.


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Original Post
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Managers,

I have a web server that looses swap space without warning.  Is this a 
patching issue?  Or could it be worse?

Sun V100
550MHz CPU
512MB RAM
Solaris 8 Generic_108528-19
Apache 1.3.27 with SSL

Results of df -k during the problem:
swap                  748504      24  748480     1%    /var/run

Results of df -k immediately after reboot:
swap                 4581496      24 4581472     1%    /var/run

# grep swap /etc/vfstab
/dev/dsk/c0t2d0s3       -       -       swap    -       no      -
swap    -       /tmp    tmpfs   -       yes     -

TIA,
Marc B.
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Received on Wed Jul 14 14:47:23 2004

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