[squid-users] Large scale high performance squid on FreeBSD - problems

Hi, I need to setup squid for approx 3000 clients on 30Mbit link. Estimated
load is 10000reqs/min.
Hardware is Xeon/2.8GHz, 1G RAM, Intel 1000/PRO Ethrenet and 2x36 Ultra320 SCSI
disks dedicated for cache.
OS is FreeBSD 4.9-STABLE, Squid 2.5STABLE4 installed from ports.
Squid was configured for two storage directories using diskd.

The problem is the following:
at about 2000reqs/min Squid works fine using ~50% CPU, however when load grows
to 3000reqs/min Squid suddenly goes to 100% CPU and system becomes
unresponsible at all.

Any ideas, suggestions?

Thanks in advance,
Andriy Korud