Re: [squid-users] IPv6 slow on internal sites

2010-05-20 Thread FRLinux
2010/5/20 FRLinux :
> Hello, i actually did some test from home to our sites and over v6
> they are slow too, so i believe this is no longer a squid issue.

Found what the problem was, thought I should report even though it has
nothing to do with Squid. Problem is Broadcom chipset related, TSO
makes it behave at 16K/s when sending IPv6 packets (TX, does not
affect RX). Bug: https://bugzilla.redhat.com/show_bug.cgi?id=531270

Just to be clear, the problem is not on the squid server but on the
IPv6 server (which incidentally, is a kvm server).

So that fixes it: ethtool -K eth0 tso off

Cheers,
Steph


Re: [squid-users] IPv6 slow on internal sites

2010-05-20 Thread FRLinux
2010/5/20 Henrik Nordström :
> does it work well to browse the internal sites from the proxy server
> itself but without usign Squid?

Hello, i actually did some test from home to our sites and over v6
they are slow too, so i believe this is no longer a squid issue.

Sorry for the noise (although i'll carry on using squid 3.x at work
since we are dual stacked there too, nice work guys  :)

Cheers,
Steph


Re: [squid-users] IPv6 slow on internal sites

2010-05-20 Thread Henrik Nordström
tor 2010-05-20 klockan 17:03 +0100 skrev FRLinux:

> We have installed Squid 3.1.3 (compiled from sources using a spec file
> I found for version 3.0.3 at the time) on a CentOS 5.5 server (i386).
> We are seeing slow loading of images on all IPv6 internal sites (but
> not to external IPv6 sites). Loading test is instant, just images is
> causing problems.

Odd.

does it work well to browse the internal sites from the proxy server
itself but without usign Squid?

> I have also tried to specify direct access for the sites, but that
> didn't fix it:
> 
> acl INSIDE dst 2001::xx::/48
> always_direct allow INSIDE

Do you have any cache peers traffic is normally forwarded to?

If not then always_direct have no effect.




[squid-users] IPv6 slow on internal sites

2010-05-20 Thread FRLinux
Hello,

We have installed Squid 3.1.3 (compiled from sources using a spec file
I found for version 3.0.3 at the time) on a CentOS 5.5 server (i386).
We are seeing slow loading of images on all IPv6 internal sites (but
not to external IPv6 sites). Loading test is instant, just images is
causing problems.

I was wondering if that is something that anyone here might have
encountered? I was thinking of some possible pmtu issue but after some
experiments, it does not seem to be the case.

I have also tried to specify direct access for the sites, but that
didn't fix it:

acl INSIDE dst 2001::xx::/48
always_direct allow INSIDE

Any suggestion welcome.

Cheers,
Steph