[squid-users] MAXHTTPORTS CentOS 6

[Amos Jeffries]

On 4/04/2017 7:39 a.m., Eliezer  Croitoru wrote:
> Amos still the question in hands is very simple:
> Would it matter if I will upper the limit to 16384?
> For example would it result in some memory overhead?

The usual answer applies - "it depends".

Some of the I/O modules (eg select and poll) require each special port
to be explicitly polled once every 10ms. The epoll/kqueue etc, only poll
them when other things do I/O and no less than every 10ms. So you need a
very fast server or it will kill performance for anything else.

And yes, having configuration state for each port means a lot more
memory used. These daya the use of TLS on ports means OpenSSL loads the
full set of trusted CAs into that state. So it can get VERY huge for no
obvious reason.

I dont think it is wise to embed larger limits. The one we have is an
order of magnitude larger than necessary for most installs. So it is not
generally useful.

All of the above is why there is no ./configure option. But there have
been a handful of queries wanting more, so the build option is conditional.

HTH
Amos