[squid-users] pipeline_prefetch directive

Jonathan Lee jonathanlee571 at gmail.com
Fri Jan 3 08:23:11 UTC 2025


Hello fellow Squid Users,

I understand this directive is removed in Squid7 again I am still trying to understand more about what it did and does in the older versions of software. 

pipeline_prefetch historically was on or off for settings however today it is n+1 or a numerical value for the variable n.

My question is after many trial and errors what is a good range to use for a 4GB memory system, 

I have attempted many different n values some being 100, 200, 300, 5, 10 etc it appears to work well with 100 or maybe it was my other changes with 
using the directive read_ahead_gap 64 KB and testing 16 and 32 

what is a good solid go go juice number for pipeline_prefetch? I do notice massive increases in facebook loads when I have it at 100 however decreased performance with news websites. It is like a can’t win directive for me. Finally I thought best to ask. 

I do understand it is no longer recommended to be used this is simply for speed and the system is secure behind a firewall. 

Thank for all you do. 


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