Jim C. Nasby wrote:
> On Tue, Jun 13, 2006 at 04:20:34PM -0700, Mischa Sandberg wrote:
>> Jim C. Nasby wrote:
>>> What's sort_mem set to? I suspect you simply ran the machine out of
>>> memory.
>> 8192 (8MB). No issue when shared_buffers was 2000; same apps always.
>
> So if all 50 backends were running a sort, you'd use 400MB. The box has
> 4G, right?
Umm ... yes. "if". 35-40 of them are doing pure INSERTS.
Not following your train.
>> Yep, tested /etc/system segmap_percent at 20,40,60.
>> No significant difference between 20 and 60.
> That's pretty disturbing... how large is your database?
~10GB. Good locality. Where heading?
--
Engineers think that equations approximate reality.
Physicists think that reality approximates the equations.
Mathematicians never make the connection.
