[squid-users] SMP mode fails to process sibling icp hits from peer

Alex Rousskov rousskov at measurement-factory.com
Tue Feb 7 18:33:20 UTC 2017

On 02/07/2017 11:11 AM, JoeM wrote:
> I am running squid 3.5.23 in accelerator mode with a sibling and have
> recently enabled SMP mode with multiple workers.  Since I have done this, I
> have noticed that squid  will only fetch content from the sibling if the ICP
> response was processed by the same worker which handled the original client
> request. Is this a known issue with SMP mode [...]?

Yes, it is a known issue with a workaround. Please search for ICP at


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