Re: [GENERAL] Partitioning Advice

2012-06-10 Thread Ben Carbery
> do many of the statistical queries use the whole month's data? > have you considered partitioning the log table by day? if you can > reduce the number of rows involved in the table-scans by partitioning > it'll be help performance. > I am summarising by hour, day, week and month. So I guess par

Re: [GENERAL] Partitioning Advice

2012-06-10 Thread Jasen Betts
On 2012-06-06, Ben Carbery wrote: > In the current environment I am given a single VHDD which I have not > partitioned at all. The SAN performance is pretty good, but we have noticed > slowdowns at various times.. The database does a lot of logging - constant > small writes, with some probably in

Re: [GENERAL] Partitioning Advice

2012-06-07 Thread Greg Smith
On 06/06/2012 01:07 AM, Ben Carbery wrote: The new server has a great deal more memory which I am hoping will help (shared_buffers = 8GB, total RAM 20GB), but I am looking at what might be optimal for the storage configuration. From looking at previous conversations here I am thinking of someth

Re: [GENERAL] Partitioning Advice

2012-06-07 Thread Ben Carbery
> > > Since you are on RHEL 6 I would use ext4 throughout. > Great, I'll look into it. However my research suggested a journalled filesystem is unnecessary for xlogs and I assume ext4 is journalled? > You say you have I/O problems when "stats jobs" run. Can you describe > those jobs > and what t

Re: [GENERAL] Partitioning Advice

2012-06-06 Thread Albe Laurenz
Ben Carbery wrote: > I have a postgres server I need to move onto a new OS (RHEL6) on a new VM and > am looking for advice on > how to partition the disks to gain some performance improvement. > > In the current environment I am given a single VHDD which I have not > partitioned at all. The SAN