Re: [PERFORM] Deleting Rows From Large Tables

2013-05-17 Thread Sékine Coulibaly
Oh, sorry, overlooked that part. Maybe refreshing stats with VACUUM FULL ? 2013/5/17 Robert Emery > Hi Sékine, > > Unfortunately I'm not trying to empty the table completely, just > delete about 10-15% of the data in it. > > Thanks, > > On 17 May 2013 14:11, Sékine Coulibaly wrote: > > Rob, >

Re: [PERFORM] Reliability with RAID 10 SSD and Streaming Replication

2013-05-17 Thread Merlin Moncure
On Fri, May 17, 2013 at 8:17 AM, Merlin Moncure wrote: > On Fri, May 17, 2013 at 1:34 AM, David Rees wrote: >> On Thu, May 16, 2013 at 7:46 AM, Cuong Hoang wrote: >>> For our application, a few seconds of data loss is acceptable. >> >> If a few seconds of data loss is acceptable, I would serious

Re: [PERFORM] Reliability with RAID 10 SSD and Streaming Replication

2013-05-17 Thread Merlin Moncure
On Fri, May 17, 2013 at 1:34 AM, David Rees wrote: > On Thu, May 16, 2013 at 7:46 AM, Cuong Hoang wrote: >> For our application, a few seconds of data loss is acceptable. > > If a few seconds of data loss is acceptable, I would seriously look at > the synchronous_commit setting and think about tu

[PERFORM] Deleting Rows From Large Tables

2013-05-17 Thread Rob Emery
Hi All, We've got 3 quite large tables that due to an unexpected surge in usage (!) have grown to about 10GB each, with 72, 32 and 31 million rows in. I've been tasked with cleaning out about half of them, the problem I've got is that even deleting the first 1,000,000 rows seems to take an unreaso

Re: [PERFORM] Reliability with RAID 10 SSD and Streaming Replication

2013-05-17 Thread David Rees
On Thu, May 16, 2013 at 7:46 AM, Cuong Hoang wrote: > For our application, a few seconds of data loss is acceptable. If a few seconds of data loss is acceptable, I would seriously look at the synchronous_commit setting and think about turning that off rather than risk silent corruption with non-e