https://bz.apache.org/bugzilla/show_bug.cgi?id=58524

--- Comment #5 from Cedric Roijakkers <cedric.roijakk...@qnh.nl> ---
Hi, I have applied your patch on one production server and left it running
there for some time.

I'm now getting less error logging, but still the occasional segfault:

[Tue Oct 27 14:13:08.126175 2015] [core:notice] [pid 26297:tid 47021196566720]
AH00052: child pid 26583 exit signal Segmentation fault (11)
[Tue Oct 27 14:13:54.135349 2015] [core:notice] [pid 26297:tid 47021196566720]
AH00052: child pid 26305 exit signal Segmentation fault (11)

Is there any logging that I can switch on that would help you?

Interestingly enough, I still see lots of connections stuck in CLOSE_WAIT while
the mod_http2 is running. On the other production servers, at the same time,
there are around 10-15 connections in CLOSE_WAIT, with mod_http2 enabled the
value hangs between 200 and 300, which still indicates something wrong.

The reason why we have so many would probably be because our setup includes a
lot of mod_proxy usage, we proxy to varnish, which proxies back to apache after
applying caching. For a subset of calls, we then later proxy to Tomcat, so
there is quite a lot of proxying going on, and when a process dies, I can
imagine the connection stays open in CLOSE_WAIT. Restarting apache immediately
closes all the CLOSE_WAIT connections.

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