Re: [PERFORM] 9.5alpha1 vs 9.4

2015-07-06 Thread Mkrtchyan, Tigran
On Jul 6, 2015 18:45, Josh Berkus wrote: > > On 07/05/2015 10:16 AM, Mkrtchyan, Tigran wrote: > > Thanks for the hin. My bad. The backup db and 9.5 had a different type on > > one of the foreign-key constrains char(36) vs varchar(36). > > > > The schema was screwed couple of days ago, byt per

Re: [PERFORM] New server: SSD/RAID recommendations?

2015-07-06 Thread Joshua D. Drake
On 07/06/2015 09:56 AM, Steve Crawford wrote: On 07/02/2015 07:01 AM, Wes Vaske (wvaske) wrote: For what it's worth, in my most recent iteration I decided to go with the Intel Enterprise NVMe drives and no RAID. My reasoning was thus: 1. Modern SSDs are so fast that even if you had an infini

Re: [PERFORM] New server: SSD/RAID recommendations?

2015-07-06 Thread Steve Crawford
On 07/02/2015 07:01 AM, Wes Vaske (wvaske) wrote: What about a RAID controller? Are RAID controllers even available for PCI-Express SSD drives, or do we have to stick with SATA if we need a battery-backed RAID controller? Or is software RAID sufficient for SSD drives? Quite a few of the ben

Re: [PERFORM] 9.5alpha1 vs 9.4

2015-07-06 Thread Josh Berkus
On 07/05/2015 10:16 AM, Mkrtchyan, Tigran wrote: > Thanks for the hin. My bad. The backup db and 9.5 had a different type on > one of the foreign-key constrains char(36) vs varchar(36). > > The schema was screwed couple of days ago, byt performance numbers I checked > only > after migration to 9.

Re: [PERFORM] Hmmm... why does pl/pgsql code parallelise so badly when queries parallelise fine? Anyone else seen this?

2015-07-06 Thread Merlin Moncure
On Fri, Jul 3, 2015 at 9:48 AM, Graeme B. Bell wrote: > Hi everyone, > > I've written a new open source tool for easily parallelising SQL scripts in > postgres. [obligatory plug: https://github.com/gbb/par_psql ] > > Using it, I'm seeing a problem that I've also seen in other postgres proje