Do you mean 6-12% of total iowait, or per cpu? Our average iowait in the last week is 34.31% of a total 1600% with an average idle of 1451.76%. Our iowait *does* spike occasionally (today it went up to 148.01%) but it doesn't coincide with the lock happening. At the time of the lock we were at 10.58% iowait, which is quite a bit below our average.
Thanks, -Chris. On Wed, Feb 1, 2012 at 4:55 PM, Alan Hodgson <ahodg...@simkin.ca> wrote: > > > Define "low I/O". The only things I've ever seen interfere with console > access > are running out of memory or excessive disk i/o. If you're seeing even > 6-12% > iowait on a 16 core machine you might very well have swamped your available > disk I/O. > > > -- > Sent via pgsql-general mailing list (pgsql-general@postgresql.org) > To make changes to your subscription: > http://www.postgresql.org/mailpref/pgsql-general >
