Re: Apache + mod_php performance

On 2024-09-26, Arne Vajhøj <arne@vajhoej.dk> wrote:

On 9/26/2024 9:26 PM, Lawrence D'Oliveiro wrote:

On Thu, 26 Sep 2024 21:20:38 -0400, Arne Vajhøj wrote:

A very quick search make me think that the mailbox is only used for
control not for data.

 
Could still be a bottleneck, though.

>
If it is only used for the parent to signal the child to terminate?
>

                                     That and the need for all the ASTs.

>
Why should AST's be a problem?
>
The "call this function when task is done" approach is
a very common design today. DEC was ahead of time with
that.
>
And implementation wise then the AST's worked on VAX 700
series 45 years ago. Todays systems are extremely much
faster - maybe a factor 10000 faster.
>

Can you try this on an Alpha system (emulated or otherwise) and see
how the figures compare ?

Just wondering if this performance overhead is something that is x86-64
specific.

Simon.

--
Simon Clubley, clubley@remove_me.eisner.decus.org-Earth.UFP
Walking destinations on a map are further away than they appear.