Re: Should commit_delay be PGC_SIGHUP?

On 22 March 2013 02:14, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> Simon Riggs <simon@2ndQuadrant.com> writes:
>> Only one setting will be best for the whole cluster, so neither the
>> user nor the DBA gains if a user sets this to a different value than
>> the one that has been determined to be optimal.
>
>> Since we wait while holding the lock it is actually harmful to
>> everyone if anybody sets a stupid value and might even be considered a
>> denial of service attack.
>
>> So there is a very good reason to make this SIGHUP, not just a whim.
>
> Hmm.  If a malicious user could hurt performance for other sessions with
> a bad setting of commit_delay, then USERSET is clearly a bad idea.
> But it still seems like it could be SUSET rather than SIGHUP.

Agreed; everybody gets what they want. Committed.

-- Simon Riggs                   http://www.2ndQuadrant.com/PostgreSQL Development, 24x7 Support, Training & Services