>What type of server is that? and especially.. how is the I/O subsystem >implemented ? Is that USCSI ? 1GB RAM, tmpfs using some as needed for /usr/spool/MailScanner/incoming/ Pent 4 2.4GHz processor, 512k cache 20GB ATA (100?) hard drive, 2MB cache Is there some method I can use to see if I'm IO bound? Some utility or test? -Alan