Does Postmark correctly model email workloads

Looking at the source of Postmark, I don't see any fsync/O_SYNC calls. MTA's are very fsync intensive. As such, I am not sure if Postmark correctly models email-intensive workloads or have I missed something obvious ?

Paper/source on Postmark available here

http://www.netapp.com/tech_library/3022.print

Charles, any comments ?

Regards, Yusuf

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