> I have change NMBCLUSTER from 2446 to 6566 to 10240, > and nothing is improved. What does netstat -m say? > Is there any way to make MGET/MCLGET not to wait? You could try changing the M_WAIT to M_NOWAIT. Finally, I hope you're running FreeBSD 4.8, because the 5.x series is known to be much slower. Jeffrey