Re: postfix benchmark performance

2009-02-12 Thread lst_hoe02
Zitat von Silas Boyd-Wickizer s...@mit.edu: 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

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 Victor Duchovni
On Wed, Feb 11, 2009 at 01:41:19PM -0500, Silas Boyd-Wickizer wrote: 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.

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

Re: postfix benchmark performance

2009-02-11 Thread Wietse Venema
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

Re: postfix benchmark performance

2009-02-11 Thread Victor Duchovni
On Wed, Feb 11, 2009 at 02:28:40PM -0500, Silas Boyd-Wickizer wrote: 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