On Mon, 29 Mar 2010 13:58:58 -0300, Marcus Kool
<marcus.k...@urlfilterdb.com> wrote:
> I use squid
> Squid Cache: Version 3.0.STABLE20
> configure options:  '--prefix=/local/squid' '--with-default-user=squid' 
> '--with-filedescriptors=2400' '--enable-icap-client'
> '--enable-storeio=aufs,ufs,null' 
> '--with-pthreads' '--enable-async-io=8' '--enable-removal-policies=lru' 
> '--enable-default-err-language=English' '--enable-err-languages=Dutch
> English Portuguese' 
> '--enable-ssl' '--enable-cachemgr-hostname=localhost'
> '--enable-cache-digests' 
> '--enable-follow-x-forwarded-for' '--enable-forw-via-db'
> '--enable-xmalloc-statistics' 
> '--disable-hostname-checks' '--enable-epoll' '--enable-useragent-log'
> '--enable-referer-log' 
> '--enable-underscores' 'CC=gcc' 'CFLAGS=-O2 -m32' 'CXXFLAGS=-O2 -m32'
>
<snip>
> 
> Note that FD 27 and FD 28 have the same NODE.
> This pipe is used for what ???

Something detailed in your cache.log when running at debug level ALL,1
(notices).

> 
> The EAGAIN return code to read is strange.  It suggest that the
> read() could return data soon, but Squid is looping now for over 4
hours.
> 
> Hopefully one of the developers knows what the pipe is used for and
> can do a guess what is causing the EAGAIN return code.

One of the helpers. Can't tell from the trace.

Please also see if this is reproduced with the 3.1 release.

Amos

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