On Mon, Mar 15, 2010 at 12:03 PM, Patrick Galbraith <[email protected]> wrote: > Hi all, > > We have hit a brick wall with memcached - namely max connections with > select. > > Namely, select from libvent use by memcached on windows, according to the > documentation from MSDN you need to > set FD_SETSIZE to the maximum number of sockets to use. By default > FD_SETSIZE > == 64. We set FD_SETSIZE to 2048 in win32select.c at the top prior to > including winsock2.h, but still no success. It seems to fail at 41 > connections.
I'm not sure why you're seeing this 41-connections issue, but I don't think it has anything to do with FD_SETSIZE. FD_SETSIZE affects the declared size of the fd_set structure that select() uses. But Libevent doesn't believe the size of fd_set from the winsock2.h header; instead, it allocates its own. Look at the code for FD_SET_ALLOC_SIZE. (For me, win32select doesn't top out at 41 connections. It can handle hundreds or thousands of connections easily, though the scaling gets poor with thousands.) yrs, -- Nick -- Nick *********************************************************************** To unsubscribe, send an e-mail to [email protected] with unsubscribe libevent-users in the body.
