My Apache 2.4.52 is crashing with a bug apparently eliminated in 2.4.7.
Server Version: Apache/2.4.52 (Ubuntu 2022.04) OpenSSL/3.0.2
mod_wsgi/4.9.0 Python/3.10
Server MPM: event
Server Built: 2022-06-14T12:30:21
DigitalOcean droplet 8GB memory, dedicated CPU.
The log says ...
[Mon Oct 24 04:50:35.867241 2022] [mpm_event:error] [pid 904:tid
140622640994176] AH03490: scoreboard is full, not at
MaxRequestWorkers.Increase ServerLimit.
mpm-event.conf ...
# event MPM
# ServerLimit: Upper limit on configurable number of processes (default 16)
# StartServers: initial number of server processes to start (default 3)
# MinSpareThreads: minimum number of worker threads which are kept spare
(default 75)
# MaxSpareThreads: maximum number of worker threads which are kept spare
(default 250)
# ThreadLimit: upper limit on the configurable number of threads per
child process (default 64)
# ThreadsPerChild: constant number of worker threads in each server
process (default 25)
# MaxRequestWorkers: maximum number of worker threads
(ServerLimit*ThreadsPerChild)
# MaxConnectionsPerChild: maximum number of requests a server process serves
<IfModule mpm_event_module>
ServerLimit 16
StartServers 3
MinSpareThreads 75
MaxSpareThreads 250
ThreadLimit 64
ThreadsPerChild 25
AsyncRequestWorkerFactor 2
MaxRequestWorkers 400
MaxConnectionsPerChild 0
</IfModule>
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