On Wed, Sep 20, 2017 at 12:14 PM, Jerry Sievers <gsievers19@comcast.net> wrote:
> Basically as per $subject.
>
> We took a perf hit moving up to newer hardware and OS version which
> might in some cases be OK but admittedly there is some risk running a
> much older app (Pg 9.3) on a kernel/OS version that nowhere near existed
> when 9.3 was current.
Are you sure you're using the same locale etc as you were on the old
db? The most common cause of performance loss when migrating is that
the new db uses a locale like en_US while the old one might have been
in locale=C
>
> Be curious to hear of issues encountered and particular to eager to know
> if disabling any kernel 4.x features helped.
>
> Thanks
>
> PostgreSQL 9.3.19 on x86_64-pc-linux-gnu, compiled by gcc (Ubuntu 5.4.0-6ubuntu1~16.04.4) 5.4.0 20160609, 64-bit
>
>
> $ uname -a
> Linux foo.somehost.com 4.4.0-92-generic #115-Ubuntu SMP Thu Aug 10 09:04:33 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
>
> --
> Jerry Sievers
> Postgres DBA/Development Consulting
> e: postgres.consulting@comcast.net
> p: 312.241.7800
>
>
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