From: | Stephen Frost <sfrost(at)snowman(dot)net> |
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To: | Josh Berkus <josh(at)agliodbs(dot)com> |
Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Amit Kapila <amit(dot)kapila(at)huawei(dot)com>, 'Andres Freund' <andres(at)2ndquadrant(dot)com>, 'Greg Stark' <stark(at)mit(dot)edu>, 'Alvaro Herrera' <alvherre(at)2ndquadrant(dot)com>, 'Fujii Masao' <masao(dot)fujii(at)gmail(dot)com>, 'Robert Haas' <robertmhaas(at)gmail(dot)com>, 'Dimitri Fontaine' <dimitri(at)2ndquadrant(dot)fr>, pgsql-hackers(at)postgresql(dot)org |
Subject: | Re: Re: ALTER SYSTEM SET command to change postgresql.conf parameters (RE: Proposal for Allow postgresql.conf values to be changed via SQL [review]) |
Date: | 2013-08-02 20:48:24 |
Message-ID: | 20130802204824.GG2706@tamriel.snowman.net |
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* Josh Berkus (josh(at)agliodbs(dot)com) wrote:
> I really think this is the wrong approach. If we start removing
> "unsafe" parameters from ALTER SYSTEM SET, we basically hobble the
> feature to the point of uselessness. Out of the 15 or so parameters 80%
> of our users touch, half of them are on your "unsafe" list.
Reflecting on this a bit more, I'm curious what your list-of-15 is.
Many of the items on my list were file locations or other things which
generally require coordination with other groups (like the unix admins
or network admins) to change, eg: listen_addresses, port, SSL or
Kerberos file locations, etc.
There's quite a few parameters which I've changed that are "safe" and
internal-to-PG which weren't on my list- work_mem, maint_work_mem,
vacuum / autovacuum settings, effective_io_concurrency, wal_level,
sync_commit, checkpoint settings, max_wal_senders, planner costs,
logging settings (though this might have to be coordinated w/ the unix
admins unless splunk or similar is being used), etc.
Thanks,
Stephen
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