Re: Apache + mod_php performance

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