Re: Randomly Squid stops running for some seconds..

Tony Martino wrote:

> Hi there,
>
> I'm currently running Squid 2.2 STABLE 5 on a Pentium II 266 Mhz 128 Mb RAM,
> RedHat 6.1. Randomly but very often Squid stops running correctly and hangs
> for a few seconds. I recompiled the source without "async-io" but nothing
> changed.
> My configuration directives are the following:
> --prefix=/usr/local/squid
> --enable-gnuregex
> --enable-poll
> --enable-delay-pools
>
> I've also noticed that every time that Squid hangs there is a "ftpDataRead:
> read error: (104) Connection reset by peer" in the cache.log. I don't know
> if it's a simple coincidence.
>
> Any hints?
>
> TIA
>
> _____________________________________________________
> Tony Martino
>
> Divisione Tecnologie e Sistemi
> Sistemi Informativi Integrati
> TECNOPOLIS CSATA Novus Ortus
> S.p. per Casamassima km 3
> 70010 - Valenzano (BA) - Italy
> Tel.:+39-080-4670221
> Fax.:+39-080-4551868

Can you still telnet to the box? does it have a low CPU utilisation while hung?
We had a problem with large sites on slow links to our proxy filling up the
incoming syn connect ? queue - we fixed it by increasing by having the
following in rc.local : echo 256 > /proc/sys/net/ipv4/tcp_max_syn_backlog. We
found it by doing a netstat, and seeing a large number of SYN_ACK connections.

Or could be the delay pools - haven't used them yet.

--
Darren Steven
Applications Specialist
Networking Tasmania
Telstra Australia
Ph.1800 813 302