Branko Čibej wrote on Mon, Apr 02, 2012 at 21:04:36 +0200: > On 02.04.2012 18:46, Philip Martin wrote: > > I am unable to run the Subversion regression tests for BDB and DAV with > > Apache 2.4 using the event MPM (the new default MPM in 2.4). Sometimes > > mod_dav_svn SEGVs causing tests to FAIL and sometimes the tests hang > > with mod_dav_svn spinning in a loop. The problems go away when I switch > > to the worker MPM (the old default MPM in 2.2). > > > > I'm not sure what the event MPM does that causes the problem. Here is a > > typical SEGV: > > > > #0 0x00007fb2017f8e96 in svn_error_clear (err=0x2031203920312038) > > at ../src/subversion/libsvn_subr/error.c:341 > > 341 while (err->child) > > (gdb) p err > > $1 = (svn_error_t *) 0x2031203920312038 > > (gdb) p err[0] > > Cannot access memory at address 0x2031203920312038 > > Looks like the DB_REGISTER dance biting us yet again. Pool lifetimes > most likely, it's a tricky bit of code. Hard to say for certain since I > don't know how the event MPM works.
http://httpd.apache.org/docs/current/mod/event.html """To solve [the 'keep alive problem'], this MPM uses a dedicated thread to handle both the Listening sockets, all sockets that are in a Keep Alive state, and sockets where the handler and protocol filters have done their work and the only remaining thing to do is send the data to the client""" > > -- Brane >
