Segfault preloading jemalloc with apache on Ubuntu 12.04

[agent 8131]

I had read good things about jemalloc so I decided to try it out on an Ubuntu 12.04 system.

apt-get install libjemalloc1

set /etc/ld.so.preload to /usr/lib/libjemalloc.so.1

restart apache

Apache crashed quickly and this was in the logs:

[477629.499581] show_signal_msg: 2 callbacks suppressed
[477629.499586] apache2[20748]: segfault at 7fa399400000 ip 00007fa3979e6e01 sp 00007fff142a63d0 error 4 in libjemalloc.so.1[7fa3979e3000+18000]

[agent 8131 (agent-8131)]

By "set /etc/ld.so.preload to /usr/lib/libjemalloc.so.1" I mean set the contents of /etc/ld.so.preload to "/usr/lib/libjemalloc.so.1"

[Patrick Domack (patrickdk)]

This bug is not going be solvable as is.

I have loaded jemalloc into apache2 on 12.04.2, and have no issues.

It could be a apache module your loading that is having issues, or something outside of apache maybe.

using ld.so.preload to do this, affects EVERY program on your system, I haven't checked, but if any program uses any malloc function that is non-standard, you will have issues if jemalloc doesn't also support them.

I am loading it usind LD_PRELOAD in /etc/apache2/envvars