Re: [Efw-user] Cache Misses Very High

Mike Tremaine Wed, 01 Nov 2006 18:24:05 -0800

Brian Wallace wrote:

Hi,

I have efw 2.0 installed and configured for proxy/internet filtering, dhcp, ssh, and open vpn. My users are experiencing a very slow internet connection. The Proxy Graphs indicate that "TCP Transfers and Accesses" show a % of Cache Misses at 95.02% and 98.79% respectively. Average Cache Miss Duration is 3.78 seconds. Can someone elaborate on these graphs and tell me if this could be causing the slow internet connection? If that is the case, how should I go about resloving this? I currently have the following setup: Router Connects to Internet and Red Interface on EFW. Green interface on EFW connections to linksys switch. Wireless Access Point also connects to linksys switch. All my users connect wirelessly.

You should check out the FAQ at Squid for more details but the Cache Miss is literally that it means that what ever page was being requested was NOT in the cache and therefor a miss. If you have only a few users this is normal. It is only when there are lots of people that the cache really starts get high hit rates.

I have TCP access

Total Cache Misses:	118966
Average Cache Misses:	4956.91 per hour
% Cache Misses:	70.13 %

and TCP transfers

Total Cache Misses:	2 Gb
Average Cache Misses:	86.1 Mb per hour
% Cache Misses:	93.11 %

With 150-200 users.

-Mike

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Re: [Efw-user] Cache Misses Very High

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