Hi all,
On 03/26/2013 07:59 PM, Shaun Thomas wrote:
On 03/26/2013 08:04 AM, Andrea Suisani wrote:
TPS:
100 users: 1257.21 (vanilla)2805.06 (v3 patchset)
400 users: 1437.57 (vanilla)2664.67 (v3 patchset)
800 users: 1236.89 (vanilla)2750.73 (v3 patchset)
Wow, I like the look of
On 05/15/2013 03:31 PM, Thomas Kellerer wrote:
What happens if you create one index for each column? (instead of one
combined index)
I just created the combined index to simplify the output. With two
indexes, it does the usual bitmap index scan. Even then the row estimate
is off by a
Hi all,
Our application is heavy write and IO utilisation has been the problem for
us for a while. We've decided to use RAID 10 of 4x500GB Samsung 840 Pro for
the master server. I'm aware of write cache issue on SSDs in case of power
loss. However, our hosting provider doesn't offer any other
On Thu, May 16, 2013 at 9:46 AM, Cuong Hoang climbingr...@gmail.com wrote:
Hi all,
Our application is heavy write and IO utilisation has been the problem for
us for a while. We've decided to use RAID 10 of 4x500GB Samsung 840 Pro for
the master server. I'm aware of write cache issue on SSDs
On Thu, May 16, 2013 at 7:46 AM, Cuong Hoang climbingr...@gmail.com wrote:
Hi all,
Our application is heavy write and IO utilisation has been the problem for
us for a while. We've decided to use RAID 10 of 4x500GB Samsung 840 Pro for
the master server. I'm aware of write cache issue on SSDs
On Thu, May 16, 2013 at 1:34 PM, Jeff Janes jeff.ja...@gmail.com wrote:
On Thu, May 16, 2013 at 7:46 AM, Cuong Hoang climbingr...@gmail.com wrote:
Hi all,
Our application is heavy write and IO utilisation has been the problem for
us for a while. We've decided to use RAID 10 of 4x500GB
On Thu, May 16, 2013 at 11:46 AM, Merlin Moncure mmonc...@gmail.com wrote:
On Thu, May 16, 2013 at 1:34 PM, Jeff Janes jeff.ja...@gmail.com wrote:
On Thu, May 16, 2013 at 7:46 AM, Cuong Hoang climbingr...@gmail.com
wrote:
Hi all,
Our application is heavy write and IO utilisation has
Thank you for your advice guys. We'll definitely turn off init.d script for
PostgreSQL on the master. The standby host will be disk-based so it will be
less vulnerable to power loss.
I forgot to mention that we'll set up Wal-e https://github.com/wal-e/wal-e to
ship base backups and WALs to Amazon
Hi,
On 16.5.2013 16:46, Cuong Hoang wrote:
Hi all,
Our application is heavy write and IO utilisation has been the problem
for us for a while. We've decided to use RAID 10 of 4x500GB Samsung 840
What does heavy write mean in your case? Does that mean a lot of small
transactions or few large
Hi Tomas,
We have a lot of small updates and some inserts. The database size is at
35GB including indexes and TOAST. We think it will keep growing to about
200GB. We usually have a burst of about 500k writes in about 5-10 minutes
which basically cripples IO on the current servers. I've tried to
On 17/05/13 12:06, Tomas Vondra wrote:
Hi,
On 16.5.2013 16:46, Cuong Hoang wrote:
Pro for the master server. I'm aware of write cache issue on SSDs in
case of power loss. However, our hosting provider doesn't offer any
other choices of SSD drives with supercapacitor. To minimise risk, we
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