RE: [squid-users] Squid 2.5.STABLE3 and ntlm and authentication popup

> Two possible causes:
> 1) Not enough NTLM auth helpers
> 2) Response from auth server is taking too long

I haven't received more "AuthenticateNTLMHandleReply: invalid callback
data.
Releasing helper" since I upped the # of children again, but it's only
been a few
hours and this proxy is not used heavily.

> Right now, my best guess is that your authentication server is
becoming
> overloaded and replies are taking too long. This causes the auth
helpers to
> block, and eventually Squid will queue requests.

> BTW, what are the specs on your authentication server (OS,
> harware, number of users)?

NT 4 SP 6, dual 500 MHz w/ ~ 500 meg RAM, 1900 users in the domain.

I turned up debugging for section 29, it hasn't happened again yet.

So far avg service time for NTLM authenticators is 0 msec. Here are the
current
# of ntlm requests per helper for 15 clients: 281, 100, 46, 23, 6, 2, 0,
0...

> The first 3 helpers handle 88% of the requests (the first helper alone
handles
> 76%), and we have no deferred requests and an average service time of
0 msec.

If the current #'s are anything to go by, my first 3 handle 93% with the
first
handling 61%, but I'll keep my eye on it. Hopefully it will break ;).

Thanks for your help & interest,
~ Daniel

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Received on Tue Jul 01 2003 - 13:13:53 MDT