- /etc/sysctl.conf vfs.vmiodirenable=1 cache directory entries kern.ipc.shm_use_phys=1 Don't pageout shared memory net.inet.tcp.sendspace=32768 net.inet.tcp.recvspace=32768 Increases network throughput net.inet.tcp.always_keepalive=1 Always setsockopt KEEPALIVE Send keepalive messages across an open connection if no pong, then close it, more reliable,faster, saves mbufs more than normal - /boot/loader.conf hw.ata.wc="1" enables the cache on the hard drive device off for "reliablity" hw.ata.tags="1" enables IBM DTLA IDE drive's Tag Queueing good: what comes into the hd first gets written first vs normal where 3k crap is held while gig is written down [root@dualcpus]:/usr/home/data# sysctl net.inet.tcp.rfc1644=1 net.inet.tcp.rfc1644: 0 -> 1 what about net.inet.tcp.rfc1323: Enable rfc1323 (high performance TCP) extensions I think 1323 is the precursor to 1644, but turn both on