Pierangelo Masarati wrote:

Howard Chu wrote:

...

What kind of system are you running on? Linux / multiprocessor?

No, right now that's just my poor man's laptop (Intel(R) Pentium(R) M processor 2.26GHz, UP) running Linux (2.6.18, CentOS 5.2). Tomorrow I can check on better hardware, including SMP (quad Opteron), but I don't think that's a problem. Of course it's using epoll().

Can you try a newer Linux kernel?

The last useful log entries are:

do_syncrep2: rid=001 (-1) Can't contact LDAP server do_syncrepl: rid=001 retrying (4 retries left) connection_read(10): no connection!

The do_syncrep2 message is printed at syncrepl.c:1208. At that point both err and rc are -1. It'll fall into line 1217 and tear down the connection, which would remove it from epoll's control. So I don't understand why epoll is waking up repeatedly after that point, unless perhaps there's a kernel bug in epoll...