On Dec 18, 2007, at 3:32 AM, Gregory Stark wrote:
Also, has anyone looked into adding a class of system calls that would actually tell us if the kernel issued physical IO? I find it hard to believethat other RDBMSes wouldn't like to have that info...Yeah, I think that's called "DTrace"
That seems like way overkill...When a read() call returns, surely the kernel knows whether it actually issued a physical read request to satisfy that. I don't see any reason why you couldn't have a version of read() that returns that information. I also rather doubt that we're the only userland software that would make use of that.
-- Decibel!, aka Jim C. Nasby, Database Architect [EMAIL PROTECTED] Give your computer some brain candy! www.distributed.net Team #1828
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