Hello, one of our slapd daemons take 99.9% of CPU time (openldap 2.3.11, bdb 4.3.29, SuSE Linux SLES-8 (i386), Kernel 2.4.21-273-smp) With strace we detect: sched_yield() = 0 sched_yield() = 0 .. I found a lot about the sched_yield problem in openldap, but I'm still not sure what to do. Any suggestions ? Thanks ! Sepp