Re: cache warning

From: Tilman Schmidt <Tilman.Schmidt@dont-contact.us>
Date: Thu, 20 May 1999 11:41:41 +0200

At 11:03 20.05.99 +0200, Paul-Emile Bellaloum wrote:
><p>Could someone explain to me what mean theses warnings that I find in
>my cache.log file :
><blockquote TYPE=CITE>
><pre>1999/05/20 10:41:19| WARNING: All dnsserver processes are busy.
>1999/05/20 10:41:19| WARNING: 20 pending requests queued
>1999/05/20 10:41:19| Consider increasing the number of dnsserver processes in yo
>ur config file.
>1999/05/20 10:41:49| WARNING: Disk space over limit: 109152 KB > 102400 KB</pre>
></blockquote>
>
><p><br>I guess that I have to increase the number of my dnsserver processes
>(I have 5 !) but how to choose the correct one ?

5 is *very* small. Consider at least doubling that, and possibly much more.
I have a rather small installation (100 users), dns_children is set to 15,
and 14 of them have already been in use at the same time.

Generally speaking, you should have so many dnsserver processes that there
is always at least one of them idle and thus available to a new request.
You can look at the histogram in the cachemgr stats/dns to see how much
your dnsserver processes are used. But an unused dnsserver really doesn't
cost much, so I'd just give it a hefty increase and be done with it.

-- 
Tilman Schmidt          E-Mail: Tilman.Schmidt@sema.de (office)
Sema Group Koeln, Germany       tilman@schmidt.bn.uunet.de (private)
"newfs leaves the filesystem in a well known state (empty)."
                                                - Henrik Nordstrom
Received on Thu May 20 1999 - 03:52:15 MDT

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