Re: [PERFORM] Having I/O problems in simple virtualized environment

2012-01-31 Thread Jose Ildefonso Camargo Tolosa
On Mon, Jan 30, 2012 at 3:11 AM, Ron Arts wrote: > Op 30-01-12 02:52, Jose Ildefonso Camargo Tolosa schreef: >> On Sun, Jan 29, 2012 at 6:18 PM, Ron Arts wrote: >>> Hi list, >>> >>> I am running PostgreSQL 8.1 (CentOS 5.7) on a VM on a single XCP >>> (Xenserver) host. >>> This is a HP server wit

Re: [PERFORM] Having I/O problems in simple virtualized environment

2012-01-29 Thread Ron Arts
Op 30-01-12 02:52, Jose Ildefonso Camargo Tolosa schreef: > On Sun, Jan 29, 2012 at 6:18 PM, Ron Arts wrote: >> Hi list, >> >> I am running PostgreSQL 8.1 (CentOS 5.7) on a VM on a single XCP (Xenserver) >> host. >> This is a HP server with 8GB, Dual Quad Core, and 2 SATA in RAID-1. >> >> The pro

Re: [PERFORM] Having I/O problems in simple virtualized environment

2012-01-29 Thread Jose Ildefonso Camargo Tolosa
On Sun, Jan 29, 2012 at 6:18 PM, Ron Arts wrote: > Hi list, > > I am running PostgreSQL 8.1 (CentOS 5.7) on a VM on a single XCP (Xenserver) > host. > This is a HP server with 8GB, Dual Quad Core, and 2 SATA in RAID-1. > > The problem is: it's running very slow compared to running it on bare meta

Re: [PERFORM] Having I/O problems in simple virtualized environment

2012-01-29 Thread Claudio Freire
On Sun, Jan 29, 2012 at 7:48 PM, Ron Arts wrote: > Hi list, > > I am running PostgreSQL 8.1 (CentOS 5.7) on a VM on a single XCP (Xenserver) > host. > This is a HP server with 8GB, Dual Quad Core, and 2 SATA in RAID-1. > > The problem is: it's running very slow compared to running it on bare meta

[PERFORM] Having I/O problems in simple virtualized environment

2012-01-29 Thread Ron Arts
Hi list, I am running PostgreSQL 8.1 (CentOS 5.7) on a VM on a single XCP (Xenserver) host. This is a HP server with 8GB, Dual Quad Core, and 2 SATA in RAID-1. The problem is: it's running very slow compared to running it on bare metal, and the VM is starving for I/O bandwidht, so other processe