Re: [modwsgi] Re: mod_wsgi (3.4-14) / Apache 2.4.12 / cx_oracle 5.2 / Oracle 12 / Red Hat (6.7) / Django 1.8.2 hanging under load

Can you provide the traces for all threads? Graham > On 9 Oct 2015, at 12:36 am, 'Lukasz Szajkowski' via modwsgi > wrote: > > Thanks a lot Graham for advice > > I tried the settings > WSGIScriptAlias / /opt/hosts/pyws.test/pyws/pyws/wsgi.py > process-group=pyws.st

Re: [modwsgi] Re: mod_wsgi (3.4-14) / Apache 2.4.12 / cx_oracle 5.2 / Oracle 12 / Red Hat (6.7) / Django 1.8.2 hanging under load

> On 6 Oct 2015, at 6:32 pm, 'Lukasz Szajkowski' via modwsgi > wrote: > > Deadlock shows that application hangs trying to load modules (from django or > built-in etc.). Normally it should be done only once at start-up, but in our > case it's after many requests

Re: [modwsgi] Re: mod_wsgi (3.4-14) / Apache 2.4.12 / cx_oracle 5.2 / Oracle 12 / Red Hat (6.7) / Django 1.8.2 hanging under load

Looks like a lock isn't being freed or a lock priority inversion, etc. Tricky. On Mon, Sep 28, 2015 at 3:10 PM, 'Lukasz Szajkowski' via modwsgi < modwsgi@googlegroups.com> wrote: > The actual stack trace while hanging is > #0 0x7f047ff099b0 in sem_wait () from /lib64/libpthread.so.0 > #1