Matt Clarkson wrote: > The LWLOCK_STATS below suggest that ProcArrayLock might be the main > source of locking that's causing throughput to take a dive as the client > count increases beyond the core count.
> Any thoughts or comments on these results are welcome! Do these results change if you use Heikki's patch for CSN-based snapshots? See http://www.postgresql.org/message-id/539ad153.9000...@vmware.com for the patch (but note that you need to apply on top of 89cf2d52030 in the master branch -- maybe it applies to HEAD the 9.4 branch but I didn't try). -- Álvaro Herrera http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training & Services -- Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
