Re: First set of OSDL Shared Mem scalability results, some wierdness ...
Tom Lane <tgl@sss.pgh.pa.us>
From: Tom Lane <tgl@sss.pgh.pa.us>
To: Kevin Brown <kevin@sysexperts.com>
Cc: pgsql-performance@postgresql.org
Date: 2004-10-09T15:07:28Z
Lists: pgsql-hackers, pgsql-performance
Kevin Brown <kevin@sysexperts.com> writes: > This is why I sometimes wonder whether or not it would be a win to use > mmap() to access the data and index files -- mmap() is Right Out because it does not afford us sufficient control over when changes to the in-memory data will propagate to disk. The address-space-management problems you describe are also a nasty headache, but that one is the showstopper. regards, tom lane