Horton

Re: Possible performance regression in version 10.1 with pgbench read-write tests.

Mithun Cy <mithun.cy@enterprisedb.com>

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From: Mithun Cy <mithun.cy@enterprisedb.com>
To: Andres Freund <andres@anarazel.de>
Cc: pgsql-hackers <pgsql-hackers@postgresql.org>, Robert Haas <robertmhaas@gmail.com>, Amit Kapila <amit.kapila16@gmail.com>
Date: 2018-07-20T03:03:02Z
Lists: pgsql-hackers 
Hi Andres,

On Fri, Jul 20, 2018 at 1:21 AM, Andres Freund <andres@anarazel.de> wrote:

> Hi,
>
> On 2018-01-24 00:06:44 +0530, Mithun Cy wrote:
> > Server:
> > ./postgres -c shared_buffers=8GB -N 200 -c min_wal_size=15GB -c
> > max_wal_size=20GB -c checkpoint_timeout=900 -c
> > maintenance_work_mem=1GB -c checkpoint_completion_target=0.9 &
>
> Which kernel & glibc version does this server have?
>

[mithun.cy@cthulhu ~]$ cat /proc/version
Linux version 3.10.0-693.5.2.el7.x86_64 (builder@kbuilder.dev.centos.org)
(gcc version 4.8.5 20150623 (Red Hat 4.8.5-16) (GCC) ) #1 SMP Fri Oct 20
20:32:50 UTC 2017

[mithun.cy@cthulhu ~]$ ldd --version
ldd (GNU libc) 2.17


-- 
Thanks and Regards
Mithun C Y
EnterpriseDB: http://www.enterprisedb.com

Commits

  1. Pad semaphores to avoid false sharing.