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Re: Re: squid 3.2.0.5 even slower than squid 3.1 and doesn't work with workers >1

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On Tue, 22 Mar 2011, Amos Jeffries wrote:

On Mon, 21 Mar 2011 18:34:41 -0700 (PDT), david@xxxxxxx wrote:
one thing that I've found is that even with --disable-ipv6 squid will
still use IPv6 on a system that has it configured (next I'll try and
see if that's what's going wrong on the systems that don't have it
configured, but those systems don't have strace on them, so I'll have
to build a throw-away system instead of using one of my standard build
test systems)

David Lang


There are several extremely strange things going on here.
I'm cc'ing squid-dev in on this so if the workers behaviour continues after this test Alex can be aware of it. Please followup to that list.

Can you try a clean build (brand new build directory, fresh copy of the sources, re-./configure and re-make) using the 3.2 daily snapshot (tarball or rsync) ?

If that still fails with either the v6 or the workers issue please provide a copy of the include/autoconf.h and config.log files generated.

I tracked down that it doesn't use IPv6 if the kernel doesn't support it, but if the kernel does support it squid ignores the --disable-ipv6 flag

I found that my startup problem was attempting to write the .pid files. with more than one worker, they try to write their pid file after they have changed their effective userid, and the userid 'proxy' was not allowed to write to /var/run where I had the pidfiles set to write.

the major problem here is the horrible logging that didn't make it clear what was failing (and why failing to write a pid file would break the rest of squid also doesn't make sense)

I put this in other e-mails, but since the developers are being copied on this one, I figured I'd put it here to make it easier to find.

David Lang

NP: I have not read the earlier mails
Amos

 On Mon, 21 Mar 2011, david@xxxxxxx wrote:

Date: Mon, 21 Mar 2011 17:07:42 -0700 (PDT)
From: david@xxxxxxx
To: squid-users@xxxxxxxxxxxxxxx
Subject:  Re: squid 3.2.0.5 even slower than squid 3.1 and
    doesn't work with workers >1
resending without the attachments since this doesn't appear to have gotten through to the list. if this gets through I'll reply with them.

David Lang

On Mon, 21 Mar 2011, david@xxxxxxx wrote:

Date: Mon, 21 Mar 2011 16:41:19 -0700 (PDT)
From: david@xxxxxxx
To: squid-users@xxxxxxxxxxxxxxx
Subject: Re: squid 3.2.0.5 even slower than squid 3.1 and doesn't work with
    workers >1
testing on a different system that has IPv6 enabled I don't get the permission denied messages. but I also don't end up with squid listening on _any_ TCP port according to lsof. note that this is with the same config file (with the exception of the workers line) in all three cases.
David Lang
On Mon, 21 Mar 2011, david@xxxxxxx wrote:

Date: Mon, 21 Mar 2011 16:23:51 -0700 (PDT)
From: david@xxxxxxx
To: squid-users@xxxxxxxxxxxxxxx
Subject: squid 3.2.0.5 even slower than squid 3.1 and doesn't work with
    workers >1
In my testing of different squid versions, I attempted to use squid 3.2.0.5 with workers 1 it's even slower than squid 3.1 (3.0 will do 4200 requests/sec, 3.1 will do 2100 requests/sec, 3.2 will do 1400 requests/sec) when I set workers 2, squid won't even startup, see the attached logs of startup for all the gory details, but short version is that with workers 2 both threads fail to bind to the port, getting permission denied. below is the config options used to build this version, in case there is something I should have put in (or shouldn't have put in) that would affect either the speed or the ability to startup
Squid Cache: Version 3.2.0.5
configure options: '--prefix=' '--bindir=/usr/squid/bin' '--sbindir=/usr/squid/sbin' '--libexecdir=/usr/squid/libexec' '--datadir=/usr/squid/share' '--sysconfdir=/etc/squid' '--localstatedir=/usr/squid/var' '--mandir=/usr/squid/man' '--disable-ident-lookups' '--disable-wccp' '--enable-kill-parent-hack' '--disable-loadable-modules' '--disable-ssl' '--disable-translation' '--with-large-files' '--with-logdir=/var/log' '--disable-ipv6' '--with-filedescriptors=65535' '--disable-auto-locale' --enable-ltdl-convenience note that the system this is on doesn't have IPv6 compiled into the kernel, but I used '--disable-ipv6' to disable it in squid as well.
David Lang





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