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
Why do you believe that this should use 100% of ALL Cpus?
If you look at your synthetic test then you will likely find that
there are at any point in time only a few mail receiving processes
and mail delivering processes, and that these processes will all
be waiting for kernel system calls to complete.
With this synthetic test you really have only a low-concurrency load.
Wietse
