[Pkg-openldap-devel] Bug#378261: #378261 - slapd fails under heavy load due to descriptor limit - Debian Bug report logs

[Chris Adams]

I've verified that the same fault happens on 2.3.30-5 on a clean Etch  
install. With nfiles set to 8192 the following will occur quite  
easily in testing:

slapd[5574]: daemon: 4096 beyond descriptor table size 4096

When this happens the connection is still accepted so the client will  
wait until its timeout kicks in.

Because slapd is compiled with tcp wrappers this also causes these  
messages:
  slapd[2871]: warning: cannot open /etc/hosts.deny: Too many open files

(Does it still make sense for slapd to use tcp wrappers? It seems  
like that'd be accomplished with less overhead using iptables for  
sites which need it.)
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