Re: Apache + mod_php performance

On 9/27/2024 3:16 PM, Dan Cross wrote:

In article <vd6l5h$pmt5$1@dont-email.me>,
Arne Vajhøj  <arne@vajhoej.dk> wrote:

On 9/26/2024 11:44 AM, Dan Cross wrote:

In article <vd1u8j$3qqpg$1@dont-email.me>,
Arne Vajhøj  <arne@vajhoej.dk> 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.

>
My guess is that communications overhead is slowing things down.
What happens if you set these super low, ideally so there's a
single process handling requests, then see what sort of QPS
numbers you get for your trivial text file.

>
I set it down to 1.
>
0.1 req/sec

 
So a single request takes 10 seconds?  Or you can only make one
request every 10 seconds, but the time taken to process that
request is relatively small?

>
It is throughput.
>
N / time it takes to get response for N requests
>
With 20 threads in client then there will always be 20 outstanding
requests.