...@catalyst.net.nz, postgres performance
list pgsql-performance@postgresql.org
Sent: Tuesday, September 23, 2014 4:21:13 PM
Subject: Re: [PERFORM] postgres 9.3 vs. 9.4
On Tue, Sep 23, 2014 at 7:58 AM, Mkrtchyan, Tigran
tigran.mkrtch...@desy.de wrote:
Hi Merlin,
you are right, in 9.4
On 24/09/14 21:23, Mkrtchyan, Tigran wrote:
Hi Merlin et al.
after building postgres 9.4 myself from sources I get the same performance as
with 9.3. The difference was in the value of debug_assertions setting.
Now the next step. Why my 3 years old laptop gets x1.8 times more tps than my
one
tigran.mkrtch...@desy.de, Merlin Moncure
mmonc...@gmail.com
Cc: postgres performance list pgsql-performance@postgresql.org
Sent: Wednesday, September 24, 2014 12:04:12 PM
Subject: Re: [PERFORM] postgres 9.3 vs. 9.4
On 24/09/14 21:23, Mkrtchyan, Tigran wrote:
Hi Merlin et al.
after building
Moncure
mmonc...@gmail.com
Cc: postgres performance list pgsql-performance@postgresql.org
Sent: Wednesday, September 24, 2014 12:04:12 PM
Subject: Re: [PERFORM] postgres 9.3 vs. 9.4
On 24/09/14 21:23, Mkrtchyan, Tigran wrote:
Hi Merlin et al.
after building postgres 9.4 myself
On 25/09/14 01:03, Mkrtchyan, Tigran wrote:
With pg_test_timing I can see, that overhead is 48 nsec on my server and 32
nsec on the laptop.
what makes this difference and have it any influence on the overall performance?
Hmm - 22 nsec for my workstation, so while it could be a factor, your
-performance@postgresql.org
Sent: Monday, September 22, 2014 3:37:50 PM
Subject: Re: [PERFORM] postgres 9.3 vs. 9.4
On Fri, Sep 19, 2014 at 6:58 PM, Mark Kirkwood
mark.kirkw...@catalyst.net.nz wrote:
On 19/09/14 19:24, Mkrtchyan, Tigran wrote:
- Original Message -
From
On Tue, Sep 23, 2014 at 7:58 AM, Mkrtchyan, Tigran
tigran.mkrtch...@desy.de wrote:
Hi Merlin,
you are right, in 9.4 the debug_assertions are on:
# /etc/init.d/postgresql-9.4 start
Starting postgresql-9.4 service: [ OK ]
# psql -U postgres
psql (9.4beta2)
Type
...@gmail.com, postgres performance list
pgsql-performance@postgresql.org
Sent: Friday, September 19, 2014 8:26:27 AM
Subject: Re: [PERFORM] postgres 9.3 vs. 9.4
On 19/09/14 17:53, Mkrtchyan, Tigran wrote:
- Original Message -
From: Mark Kirkwood mark.kirkw...@catalyst.net.nz
Further
On 19/09/14 17:53, Mkrtchyan, Tigran wrote:
- Original Message -
From: Mark Kirkwood mark.kirkw...@catalyst.net.nz
Further to the confusion, here's my 9.3 vs 9.4 on two M550 (one for 9.3
one for 9.4), see below for results.
I'm running xfs on them with trim/discard enabled:
$
] postgres 9.3 vs. 9.4
On 19/09/14 17:53, Mkrtchyan, Tigran wrote:
- Original Message -
From: Mark Kirkwood mark.kirkw...@catalyst.net.nz
Further to the confusion, here's my 9.3 vs 9.4 on two M550 (one for 9.3
one for 9.4), see below for results.
I'm running xfs on them
19, 2014 8:26:27 AM
Subject: Re: [PERFORM] postgres 9.3 vs. 9.4
On 19/09/14 17:53, Mkrtchyan, Tigran wrote:
- Original Message -
From: Mark Kirkwood mark.kirkw...@catalyst.net.nz
Further to the confusion, here's my 9.3 vs 9.4 on two M550 (one for 9.3
one for 9.4), see below
19, 2014 8:26:27 AM
Subject: Re: [PERFORM] postgres 9.3 vs. 9.4
On 19/09/14 17:53, Mkrtchyan, Tigran wrote:
- Original Message -
From: Mark Kirkwood mark.kirkw...@catalyst.net.nz
Further to the confusion, here's my 9.3 vs 9.4 on two M550 (one for 9.3
one for 9.4), see below
Hi Folk,
I am trying to investigate some performance issues which we have with postgres
(a different topic by itself) and tried postgres.9.4beta2, with a hope that it
perform better.
Turned out that 9.4 is 2x slower than 9.3.5 on the same hardware.
Some technical details:
Host: rhel 6.5
On 18/09/14 21:58, Mkrtchyan, Tigran wrote:
Hi Folk,
I am trying to investigate some performance issues which we have with postgres
(a different topic by itself) and tried postgres.9.4beta2, with a hope that it
perform better.
Turned out that 9.4 is 2x slower than 9.3.5 on the same hardware.
- Original Message -
From: Mark Kirkwood mark.kirkw...@catalyst.net.nz
To: Tigran Mkrtchyan tigran.mkrtch...@desy.de,
pgsql-performance@postgresql.org
Sent: Thursday, September 18, 2014 12:17:45 PM
Subject: Re: [PERFORM] postgres 9.3 vs. 9.4
On 18/09/14 21:58, Mkrtchyan, Tigran
On Thu, Sep 18, 2014 at 2:58 AM, Mkrtchyan, Tigran tigran.mkrtch...@desy.de
wrote:
Hi Folk,
I am trying to investigate some performance issues which we have with
postgres
(a different topic by itself) and tried postgres.9.4beta2, with a hope
that it
perform better.
Turned out that 9.4
- Original Message -
From: Jeff Janes jeff.ja...@gmail.com
To: Tigran Mkrtchyan tigran.mkrtch...@desy.de
Cc: pgsql-performance@postgresql.org
Sent: Thursday, September 18, 2014 4:56:22 PM
Subject: Re: [PERFORM] postgres 9.3 vs. 9.4
On Thu, Sep 18, 2014 at 2:58 AM, Mkrtchyan
On 09/18/2014 08:09 AM, Mkrtchyan, Tigran wrote:
9.4beta2:
...
0.957854END;
Looks like IO.
Postgres internal IO? May be. We get 600MB/s on this SSDs.
While it's possible that this is a Postgres issue, my first thought is
that the two SSDs are not actually
- Original Message -
From: Josh Berkus j...@agliodbs.com
To: pgsql-performance@postgresql.org
Sent: Thursday, September 18, 2014 7:54:24 PM
Subject: Re: [PERFORM] postgres 9.3 vs. 9.4
On 09/18/2014 08:09 AM, Mkrtchyan, Tigran wrote:
9.4beta2:
...
0.957854
On 09/18/2014 03:09 PM, Mkrtchyan, Tigran wrote:
- Original Message -
From: Josh Berkus j...@agliodbs.com
To: pgsql-performance@postgresql.org
Sent: Thursday, September 18, 2014 7:54:24 PM
Subject: Re: [PERFORM] postgres 9.3 vs. 9.4
On 09/18/2014 08:09 AM, Mkrtchyan, Tigran wrote
: [PERFORM] postgres 9.3 vs. 9.4
On 09/18/2014 08:09 AM, Mkrtchyan, Tigran wrote:
9.4beta2:
...
0.957854 END;
Looks like IO.
Postgres internal IO? May be. We get 600MB/s on this SSDs.
While it's possible that this is a Postgres issue, my first thought
On Thu, Sep 18, 2014 at 4:58 AM, Mkrtchyan, Tigran
tigran.mkrtch...@desy.de wrote:
9.3.5:
0.035940END;
9.4beta2:
0.957854END;
time being spent on 'END' is definitely suggesting i/o related issues.
This is making me very skeptical that postgres is the source
On 19/09/14 08:32, Merlin Moncure wrote:
On Thu, Sep 18, 2014 at 4:58 AM, Mkrtchyan, Tigran
tigran.mkrtch...@desy.de wrote:
9.3.5:
0.035940END;
9.4beta2:
0.957854END;
time being spent on 'END' is definitely suggesting i/o related issues.
This is making me
- Original Message -
From: Merlin Moncure mmonc...@gmail.com
To: Tigran Mkrtchyan tigran.mkrtch...@desy.de
Cc: postgres performance list pgsql-performance@postgresql.org
Sent: Thursday, September 18, 2014 10:32:20 PM
Subject: Re: [PERFORM] postgres 9.3 vs. 9.4
On Thu, Sep 18
: [PERFORM] postgres 9.3 vs. 9.4
On 19/09/14 08:32, Merlin Moncure wrote:
On Thu, Sep 18, 2014 at 4:58 AM, Mkrtchyan, Tigran
tigran.mkrtch...@desy.de wrote:
9.3.5:
0.035940END;
9.4beta2:
0.957854END;
time being spent on 'END' is definitely
-performance@postgresql.org
Sent: Thursday, September 18, 2014 10:56:36 PM
Subject: Re: [PERFORM] postgres 9.3 vs. 9.4
On 19/09/14 08:32, Merlin Moncure wrote:
On Thu, Sep 18, 2014 at 4:58 AM, Mkrtchyan, Tigran
tigran.mkrtch...@desy.de wrote:
9.3.5:
0.035940END;
9.4beta2
-performance@postgresql.org
Sent: Thursday, September 18, 2014 10:56:36 PM
Subject: Re: [PERFORM] postgres 9.3 vs. 9.4
On 19/09/14 08:32, Merlin Moncure wrote:
On Thu, Sep 18, 2014 at 4:58 AM, Mkrtchyan, Tigran
tigran.mkrtch...@desy.de wrote:
9.3.5:
0.035940END
18, 2014 10:56:36 PM
Subject: Re: [PERFORM] postgres 9.3 vs. 9.4
On 19/09/14 08:32, Merlin Moncure wrote:
On Thu, Sep 18, 2014 at 4:58 AM, Mkrtchyan, Tigran
tigran.mkrtch...@desy.de wrote:
9.3.5:
0.035940END;
9.4beta2:
0.957854END;
time being spent
@postgresql.org
Sent: Thursday, September 18, 2014 10:56:36 PM
Subject: Re: [PERFORM] postgres 9.3 vs. 9.4
On 19/09/14 08:32, Merlin Moncure wrote:
On Thu, Sep 18, 2014 at 4:58 AM, Mkrtchyan, Tigran
tigran.mkrtch...@desy.de wrote:
9.3.5:
0.035940END;
9.4beta2
performance list pgsql-performance@postgresql.org
Sent: Thursday, September 18, 2014 10:56:36 PM
Subject: Re: [PERFORM] postgres 9.3 vs. 9.4
On 19/09/14 08:32, Merlin Moncure wrote:
On Thu, Sep 18, 2014 at 4:58 AM, Mkrtchyan, Tigran
tigran.mkrtch...@desy.de wrote:
9.3.5
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