Tom Lane wrote:
Zdenek Kotala <[EMAIL PROTECTED]> writes:
I tried to use memory mapped files (mmap) for clog and I think it should be also
possible way. I got about 2% better performance, but it needs more testing.
If you only got 2% out of it, it's not even worth thinking about how to
fix the serious bugs that approach would create (primarily, lack of
control over when pages can get flushed to disk).
You can flush a pages by msync() function which writes dirty pages on
disk. I don't see any other problem. Originally I tried to fix problem
with a lot of parallel issues reported by Jignesh. However, it needs
more testing if it really helps.
Zdenek
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