[Info-vax] Apache + mod_php performance

[Arne Vajhøj]

On 9/25/2024 5:10 PM, Arne Vajhøj wrote:
> It must be Apache.
> 
> Apache on VMS is prefork MPM. Yuck.
> 
> MaxSpareServers 10 -> 50
> MaxClients 150 -> 300
> 
> actually did improve performance - double from 11 to 22
> req/sec.
> 
> But the system did not like further increases. And besides
> these numbers are absurd high to handle a simulator doing requests
> from just 20 threads.
> 
> But not sure what else I can change.

Does anyone know internals of Apache on VMS?

Based on some messages in error_log it looks like
it uses mailboxes APACHE$AWS_CONTROL_MBX_nn.

If every request result in mailbox comm between
master process and a child process, then that could
slow down things.

Arne