While Mark was looking at MongoDB, I was playing comparing various aspects of MySQL and Postgres performance. Certain PG performance numbers I saw (40kqps vs 110kqps from MySQL) made me really upset, so I ended up discussing with people at #postgresql – and started comparing various versions/configurations/machines/etc.
Apparently 2.6.32 kernel, which is in Ubuntu 10.04 LTS (Lucid Lynx) and is also basis for future RHEL6 kernel has nearly 20% performance degradation for PG (though not for MySQL, phew) – and apparently it was news to their community (I have started an email thread, will see where it goes).
While I was doing my research, of course I could observe plenty of gems of wisdom:
<davidfetter> domas, …[Read more]