Re: [PERFORM] Postgresql in a Virtual Machine

2013-11-28 Thread Michael Paquier
On Fri, Nov 29, 2013 at 3:40 AM, Scott Marlowe wrote: > On Wed, Nov 27, 2013 at 7:58 PM, Dong Ye wrote: > >> As Heikki commented, VMware recently compared Postgres performance in >> an ESX (5.1) VM versus in a comparable native Linux. We saw 1. >> ESX-level locking causes no vertical scalability

Re: [PERFORM] Postgresql in a Virtual Machine

2013-11-28 Thread Scott Marlowe
On Wed, Nov 27, 2013 at 7:58 PM, Dong Ye wrote: > As Heikki commented, VMware recently compared Postgres performance in > an ESX (5.1) VM versus in a comparable native Linux. We saw 1. > ESX-level locking causes no vertical scalability degradation, 2. FYI Vmware has an optimized version of Postg

Re: [PERFORM] Postgresql in a Virtual Machine

2013-11-28 Thread Dong Ye
> There was some earlier comment in this discussion about not using NFS > datastores for Postgres VMDK's. Would you think you'd see a difference in > scalability behavior or performance in these tests if a NFS datastore would > be used instead? Provided the architecture is properly setup for tha

Re: [PERFORM] Postgresql in a Virtual Machine

2013-11-28 Thread Gudmundsson Martin (mg)
> > > > I would also make sure to check that the hypervisor does write to > permanent storage before returning to the VM with acknowledgement. > > > In the case of ESX, there is no such concern per > http://kb.vmware.com/kb/1008542. Very useful info! > As Heikki commented, VMware recently comp