On Thursday 09 June 2011, Josip Rodin wrote: > > select(3147, [1024 1223 1224 1227 1230 1231 1235 1241 1242 1243
> Hah, I found the apparent problem. The number of fds in those > select() calls tipped me off to reexamine a change I recently did > as part of the squeeze upgrade - I enabled a large number of > virtual hosts which forced me to call 'ulimit -n 4096' in the > apache2 init script. > > When I disabled >1500 virtual hosts and reduced their number to > just 3, everything was just fine again. > > Please reassign the bug elsewhere if this is not actually specific > to memcache.so - this is happening with: > * libapache2-mod-php5 Version: 5.3.3-7+squeeze1 > * apache2-mpm-prefork Version: 2.2.16-6+squeeze1 I haven't looked at the code, but my guess is that php5-memcache uses the FD_SET macro and friends. This only works up to 1024 open fds. From select(2): "An fd_set is a fixed size buffer. Executing FD_CLR() or FD_SET() with a value of fd that is negative or is equal to or larger than FD_SETSIZE will result in undefined behavior. " php5-memcache should probably use a different API (maybe poll()). An alternative work-around would be to use php in fcgi mode. -- To UNSUBSCRIBE, email to debian-bugs-rc-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
