postfix benchmark performance

2009-02-11 Thread Silas Boyd-Wickizer
Hello, I'm doing some experiments with a synthetic benchmark and postfix. My current postfix configuration can deliver ~3000 msg/sec to 1000 virtual mailboxes; however, the system (16 core/4x4 AMD opteron) is ~90% idle. All logs and queues reside in a RAM filesystem, so disk IO is not a

Re: postfix benchmark performance

2009-02-11 Thread Silas Boyd-Wickizer
With 16 logical CPUs, in this configuration you'll find your CPU load to be 1/16th of the theoretical maximum + overhead. Your report of 10% is about right. The system has 16 physical execution units: four quad core AMD Opterons. In the configuration I described, 90% of total cycles are