| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Robert Haas <robertmhaas(at)gmail(dot)com> |
| Cc: | Magnus Hagander <magnus(at)hagander(dot)net>, Greg Smith <greg(at)2ndquadrant(dot)com>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: auto-sizing wal_buffers |
| Date: | 2011-01-14 00:25:09 |
| Message-ID: | 20767.1294964709@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
Robert Haas <robertmhaas(at)gmail(dot)com> writes:
> On Thu, Jan 13, 2011 at 5:29 PM, Magnus Hagander <magnus(at)hagander(dot)net> wrote:
>> +1, I like the idea. Would it still be there to override if necessary?
> Depends what people want to do. We could make the default "0kB", and
> define that to mean "auto-tune", or we could remove the parameter
> altogether. I think I was envisioning the latter, but if people are
> hesitant to do that we could do the former instead.
I think we need to keep the override capability until the autotune
algorithm has proven itself in the field for a couple of years.
I agree with Josh that a negative value should be used to select the
autotune method.
regards, tom lane
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