Re: AW: [squid-users] Squid 3.4 sends Windows username without backslash to external wbinfo_group helper

Hi,

Just noticed something in the changelogs for the nightly build that
might mean this is fixed - I'm optimistic anyway:

Tue 2014-01-21 20:29:15 -0700
<http://www.squid-cache.org/Versions/v3/3.4/changesets/squid-3.4-13079.patch>
        Amos Jeffries +10 -2
        Fix external_acl_type async loop failures

Now I just need to figure out the "Unhandled exception: c" errors that
kill my squid every so often. It seems to be a rare issue as from
googling only myself and two other people seem to have faced it.

Cheers

Alex

On 06/01/14 20:14, Eliezer Croitoru wrote:
> Hey,
>
> There was someone in the past that asked about this ntlm helper issue.
> I would try in a way to use only squid to make sure what is going on
> at the same time.
> If you do have a number of Requests Per Second rate it will help to
> understand the basic issue.
>
> There is a complexity issue when for example a proxy was hit by 400
> requests in one sec and authentication is being used.
> There is also the basic issue that when authentication is being done
> on a network and the network is not fast enough or it has too much
> latency, the process will grow and grow over time.
>
> 100% cpu usage can be discovered sometimes but in a case the cache-mgr
> is not responsive the only tools available are:
> top
> netstat
> ss
> iptables
> iptraf
>
> And there are couple other nice tools which can verify the basic
> assumption that this network might need more then it have or need.
>
> Eliezer
>
> On 06/01/14 11:53, Rietzler, Markus (RZF, SG 324 /
> <RIETZLER_SOFTWARE>) wrote:
>> i want to join this discussion.
>> we are using squid 3.4.2 also with ntlm_auth and winbind. only
>> difference is that we don't use wbinfo_group. we just "need" or "use"
>> the username. we also have the problem, that after a few minutes
>> squid uses 100% cpu and is getting very slow. in the cache-log I can
>> see "increase ntmm-helper" as the max number is used. I also can see
>> in the cache manager menu output (ntlmauthenticator) that all the
>> configured helper are "busy".
>>
>> any idea about the 100% cpu usage?
>
Received on Wed Jan 22 2014 - 15:12:40 MST