[squid-users] connection refused by proxy.. where to start..

Running a squid box for a large network, about 3k computers; but only
about 1/3 are ever on at one time..

Squid Object Cache: Version 2.7.STABLE7
Start Time: Tue, 06 Apr 2010 17:49:52 GMT
Current Time: Tue, 04 May 2010 13:16:48 GMT
Connection information for squid:
        Number of clients accessing cache: 888
        Number of HTTP requests received: 23157816
        Number of ICP messages received: 167211
        Number of ICP messages sent: 167401
        Number of queued ICP replies: 0
        Request failure ratio: 0.00
        Average HTTP requests per minute since start: 578.3
        Average ICP messages per minute since start: 8.4
        Select loop called: 614713658 times, 3.909 ms avg

Squid is a FreeBSD 8.0-p2 i386 machine with 2G of ram; bge nic with
rxcsum and txcsum enabled.

I have an occasional issue that sometimes clients will receive a 'proxy
refusing connections' message (firefox is more straight forward with the
message than IE - but the network is mostly IE)

Instantly hitting F5 or refresh causes everything to return to normal
and the user goes on, it's a 'rare' thing that happens, but occasionally
it happens.

I don't see anything obvious in cache.log..

Where/How could I start to figure this out?

Our squid is an authenticated proxy.

We are also doing squidguard as redirect_program.

And we are using wpad autodiscovery to configure the proxy to everyone.

Thanks in advance.
Received on Tue May 04 2010 - 13:26:39 MDT