My getwork latency is 0.211s mean. Had one spike up to 0.8s
I dont know if its good or bad. Whats your latency?
Also how can i optimize?
Use bitcoind from git.
Put bitcoind on SSD disk if you have.
Or use some RAID array.
On my RAID1 (mirror) with 2 disk 10k RPM i have under 0.1 latancy (now is 0.0539s mean)
even better, use it over ext4 for extreme caching speed

also renicing it to -10 gives ALOT of latency reduce