On Wed, Jan 15, 2014 at 3:20 AM, Simon Riggs <si...@2ndquadrant.com> wrote:
> We've discussed previously the negative impact of large bulk > operations, especially wrt WAL writes. Patch here allows maintenance > operations to have their WAL generation slowed down as a replication > lag prevention feature. > > I believe there was originally intended to be some work on I/O rate > limiting, but that hasn't happened and is in some ways orthogonal to > this patch and we will likely eventually want both. > > Single new parameter works very similarly to vacuum_cost_delay > > wal_rate_limit_delay = Xms > Seems like a really bad name if we are only slowing down some commands - that seems to indicate we're slowing down all of them. I think it should be something that indicates that it only affects the maintenance commands. -- Magnus Hagander Me: http://www.hagander.net/ Work: http://www.redpill-linpro.com/
