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On 07/12/00 at 16:09, andrew wrote:
Re: Falling Memory
From: Global Homes Webmaster
Date: Wednesday, July 12, 2000
Time: 1:49:24 pm
> so what's the guideline for setting memory? I can allocate 100-meg or more
> if necessary, but are there any stability issues in doing so?
Someone from Men & Mice can give a more definitive answer, but I've always
gotten along fine with just the default 2 MB. I've got a web server and a mail
server hosting about three or four dozen virtual domains, plus about a dozen
machines on the LAN that use the QDNS machine as their resolver. The web
server has DNS look-ups turned off, so it doesn't put much of a load on QDNS.
The mail server (SIMS) uses DNS to verify return paths, check DNS-based RBL's,
etc., but it's only got a couple of dozen users, so traffic is relatively
light. If you've got look-ups turned on for your web server, or a high traffic
mail server, or a lot of client machines using your name server, or any other
scenario that would increase the incoming requests, you might need more memory
for caching.
You can use the information in QDNS's status window to tune your memory
allocation. My QDNS currently has:
404340 KB free memory
13900 replies from cache
17983 replies out
So a bit over 77% of the replies are from the cache, which seems like
acceptable efficiency to me. 8^) Expect the free memory to fluctuate
somewhat as cached records are acquired and expired.
Christopher Bort
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