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Re: Improving the Performance of Full Table Updates - Mailing list pgsql-hackers

From Gregory Stark
Subject Re: Improving the Performance of Full Table Updates
Date
Msg-id 87odf963dc.fsf@oxford.xeocode.com
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In response to Re: Improving the Performance of Full Table Updates  (Tom Lane <tgl@sss.pgh.pa.us>)
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"Tom Lane" <tgl@sss.pgh.pa.us> writes:

> "Heikki Linnakangas" <heikki@enterprisedb.com> writes:
>> * mmap the WAL segments, instead of using the slru buffers.
>
> This one's almost certainly a nonstarter, for lack of any portable way
> to control when writes happen.

I think mlock and msync(MS_SYNC) ought to be enough. I'm not sure every OS
implements them as specified though.

--  Gregory Stark EnterpriseDB          http://www.enterprisedb.com

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