Hi,
We run a fairly write-intensive workload and are looking at upgrading
our Pg servers. (PostgreSQL 9.1; no practical way to upgrade to 9.2 for
a while because we use what's packaged with Debian.)
I'm considering the following configuration:
Dual 4-core Intel CPU (E5620 at 2.4GHz)
On 08/12/2013 08:28 AM, David F. Skoll wrote:
Hi,
We run a fairly write-intensive workload and are looking at upgrading
our Pg servers. (PostgreSQL 9.1; no practical way to upgrade to 9.2 for
a while because we use what's packaged with Debian.)
apt.postgresql.org
I'm considering the
On Mon, Aug 12, 2013 at 8:28 AM, David F. Skoll d...@roaringpenguin.comwrote:
3) Our current workload peaks at about 5000 transactions per second;
you can assume about one-third to one-half of those are writes. Do
you think we can get away with 16 10Krpm SATA drives instead of the
SSDs?
When you say 16 10K drives, do you mean:
a) RAID 0 with 16 drives?
b) RAID 1 with 8+8 drives?
c) RAID 5 with 12 drives?
d) RAID 1 with 7+7 drives and 2 hotspares?
We moved from a 14 FC drive (15k RPM) array (6+6 with 2 hotspares) to a 6 SSD
array (2+2 with 2 hotspares) because our iops
On Mon, 12 Aug 2013 11:01:09 -0500 (CDT)
Scott Whitney sc...@journyx.com wrote:
When you say 16 10K drives, do you mean:
I mean 8 RAID-1 pairs with data striped across the pairs. The Linux
software RAID offset scheme is described here:
On Mon, 12 Aug 2013 16:05:04 -0400
Bruce Momjian br...@momjian.us wrote:
On Mon, Aug 12, 2013 at 08:33:04AM -0700, Joshua D. Drake wrote:
Put the pg_xlog on spindles, they are more than fast enough and
won't eat up the write life of your SSDs.
Given its small size and need for fast fsync,
On Mon, Aug 12, 2013 at 04:41:48PM -0400, David F. Skoll wrote:
On Mon, 12 Aug 2013 16:05:04 -0400
Bruce Momjian br...@momjian.us wrote:
On Mon, Aug 12, 2013 at 08:33:04AM -0700, Joshua D. Drake wrote:
Put the pg_xlog on spindles, they are more than fast enough and
won't eat up the
On Aug 12, 2013, at 4:15 PM, Lonni J Friedman wrote:
On Mon, Aug 12, 2013 at 1:05 PM, Bruce Momjian br...@momjian.us wrote:
On Mon, Aug 12, 2013 at 08:33:04AM -0700, Joshua D. Drake wrote:
1) Has anyone had experience with Intel 520 SSDs? Are they reliable?
When they fail, do they fail
I tested the hybrid approach during my months-long testing and performance
stuff, and I was a bit underwhelmed.
That said, what _I_ personally really needed was increase in peak iops. Using
spindles for static data (OS, some logs, and such) worked fine, but no matter
how I split up the pg
