[Info-vax] Apache + mod_php performance

[Arne Vajhøj]

On 9/29/2024 6:57 PM, Lawrence D'Oliveiro wrote:
> On Sun, 29 Sep 2024 10:46:12 -0400, Arne Vajhøj wrote:
>> That is not how Apache prefork MPM works.
> 
> If that’s not how it works, then how can you serve a client from more than
> one member of the worker pool?

A new request on a new connection goes to another worker. No problem.

>> And I don't understand the "put all the client context into shared
>> memory" either. Are you saying that if socket descriptors are put in
>> shared memory then any process that map that memory can use those
>> sockets????
> 
> No, but the shared-memory context can contain an index into a table of
> socket descriptors in private per-process memory. If the process trying to
> server a client context does not actually have a socket descriptor in the
> slot for that context, it can ask for one.

I still can't follow the idea.

Client X has a connection to server worker A. That means that A has
index 77 in shared memory that points to the socket descriptor for
the connection from X.

Worker B wants to serve X as well and it get index 77 from shared
memory. And then it does what?

Arne