[squid-users] Tune Squid proxy to handle 90k connection

[Alex Rousskov]

On 17/05/24 02:23, Bolinhas André wrote:

> Has I explain, by default I set those directives to off to avoid high 
> cpu consumption.

Just FYI: In this context, when you say "default", folks will tend to 
think that you are talking about default Squid configuration setting 
(i.e. something hard-coded in Squid code) rather than the actual thing 
you are talking about (i.e. your custom Squid configuration).

I do not know whether disabling persistent connections reduces CPU 
consumption in your environment. There are too many variables. In most 
cases, including NTLM authentication cases detailed by Amos, disabling 
persistent connections hurts performance, but there are always 
exceptions (and bugs).

It is not clear (to me) whether you disable persistent connections 
because they hurt performance in your environment OR you disable 
persistent connections because _you assume_ (without evidence) that they 
hurt performance in your environment.

If you do not know that disabling persistent connections reduces CPU 
consumption in your environment, then you should not disable them until 
you discover strong evidence that they hurt performance. At that point, 
you can share that evidence and ask for configuration advice based on 
that evidence.


HTH,

Alex.