From: | Nicola Contu <nicola(dot)contu(at)gmail(dot)com> |
---|---|
To: | Thomas Munro <thomas(dot)munro(at)gmail(dot)com> |
Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, "Ray O'Donnell" <ray(at)rodonnell(dot)ie>, "pgsql-generallists(dot)postgresql(dot)org" <pgsql-general(at)lists(dot)postgresql(dot)org>, Alessandro Aste <Alessandro(dot)aste(at)gtt(dot)net> |
Subject: | Re: Performance comparison between Pgsql 10.5 and Pgsql 11.2 |
Date: | 2019-03-06 11:12:29 |
Message-ID: | CAMTZZh3dYs8+4Bu5ZqSOLxcb5mChd49Y5waYtuLVHPoG9BwKOQ@mail.gmail.com |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-general |
This is instead the strace of another server running the same version
compiled but that is even slower.
Il giorno mer 6 mar 2019 alle ore 11:14 Nicola Contu <nicola(dot)contu(at)gmail(dot)com>
ha scritto:
> Here is the strace as requested for pg11
>
> Thanks
>
> Il giorno mar 5 mar 2019 alle ore 17:47 Thomas Munro <
> thomas(dot)munro(at)gmail(dot)com> ha scritto:
>
>> On Wed, Mar 6, 2019 at 4:22 AM Nicola Contu <nicola(dot)contu(at)gmail(dot)com>
>> wrote:
>> >
>> > Not sure what you are requesting exactly but here is the strace for the
>> start of the pg_ctl
>>
>> I meant that you could run the server itself in the foreground under
>> strace, like so:
>>
>> $ strace -f -c /usr/local/pgsql11.2/bin/postgres -D /db/pgsql11/data/
>>
>> Then perform your testing, and finally stop it with pg_ctl from
>> another window (or hit ^C in this window) and strace should spit out a
>> table of system calls with some counters. We might be able to see why
>> v11 is spending so much more time executing system calls than v10 for
>> your workload, or at least which systems calls they are, assuming you
>> run the same transactions against both versions.
>>
>> --
>> Thomas Munro
>> https://enterprisedb.com
>>
>
Attachment | Content-Type | Size |
---|---|---|
strace_another_server.txt | text/plain | 4.5 KB |
From | Date | Subject | |
---|---|---|---|
Next Message | Nanda Kumar | 2019-03-06 13:58:52 | Monitor the ddl and dml activities in logs |
Previous Message | Nicola Contu | 2019-03-06 10:14:45 | Re: Performance comparison between Pgsql 10.5 and Pgsql 11.2 |