On Thu, Apr 12, 2012 at 3:41 PM, Brian Fehrle <brianf@xxxxxxxxxxxxxxxxxxx> wrote: > This morning, during our nightly backup process (where we grab a copy of the > data directory), we started having this same issue. The main thing that I > see in all of these is a high disk wait on the system. When we are > performing 'well', the %wa from top is usually around 30%, and our load is > around 12 - 15. This morning we saw a load 21 - 23, and an %wa jumping > between 60% and 75%. > > The top process pretty much at all times is the WAL Sender Process, is this > normal? Sounds like vacuum to me. -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
