Re: [squid-users] Re: Squid naps each 3600 seconds !

From: Eliezer Croitoru <>
Date: Thu, 24 Oct 2013 20:13:24 +0300

Out of curiosity,
What squid Digest content is?
What the Digest rebuild does?
Let say an ICP\HTCP request can reflect the Information inside the digest?


On 10/24/2013 07:54 PM, Alex Rousskov wrote:
> On 10/24/2013 07:43 AM, Omid Kosari wrote:
>> "digest_generation off" temporary solved problem but needs restart . I have
>> tested with reload before .
> Sounds like you have detected the source of the blocking Squid problem
> and confirmed it! The fact that digest generation makes your Squid
> unresponsive is essentially a Squid bug, but you might be able to help
> Squid by adjusting its configuration. If you want to try it, I suggest
> re-enabling digest generation and setting
> digest_rebuild_chunk_percentage to 1.
> If that works around your problem, great. Unfortunately, I suspect Squid
> may still be unresponsive during digest generation time because of how
> regeneration steps are scheduled and/or because of an old bug in the
> low-level scheduling code of "heavy" events. However, using the minimum
> digest_rebuild_chunk_percentage value (1) is still worth trying.
>> But i could not use digest benefits anymore . Is there big penalty if both
>> caches are in same gigabit switch ?
> The digest optimization can be significant if the two Squids share a lot
> of popular content _and_ it takes a long time for each Squid to get that
> content from the internet during a miss.
> HTH,
> Alex.
Received on Thu Oct 24 2013 - 17:13:36 MDT

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