On Sat, Sep 17, 2011 at 9:09 PM, Peter Geoghegan wrote:
> I find it curious that we go to the trouble of
> providing a custom qsort implementation in qsort.c, pg_qsort, but
> haven't gone one step further and considered inlining effects.
I think we provided the qsort implementation for the benef
On Sat, Sep 17, 2011 at 5:57 PM, Josh Berkus wrote:
>
> > And as I said - David showed interests and we sometimes talk about it too.
> > I never wanted to bother hackers with all this stuff.
>
> Actually, I would be very interested to see you post reports
> before/after each meeting either on -hac
> And as I said - David showed interests and we sometimes talk about it too.
> I never wanted to bother hackers with all this stuff.
Actually, I would be very interested to see you post reports
before/after each meeting either on -hackers or pgsql-sql.
--
Josh Berkus
PostgreSQL Experts Inc.
htt
On 15 September 2011 19:46, Alexander Korotkov wrote:
> Proposed algorithm finds following splits by single pass on two arrays: one
> sorted by lower bound of interval and another sorted by upper bound of
> interval.
Have you considered if further performance improvements could come
from providin
On Sat, Sep 17, 2011 at 9:00 PM, Heikki Linnakangas <
heikki.linnakan...@enterprisedb.com> wrote:
> Thanks! It does look a lot simpler that way, IMHO. I presume this didn't
> change the performance characteristics?
>
On the tests I provided in the first letter difference seems to be
insignificant.
On 17.09.2011 17:36, Alexander Korotkov wrote:
On Fri, Sep 16, 2011 at 3:07 PM, Heikki Linnakangas<
heikki.linnakan...@enterprisedb.com> wrote:
That looks awfully complicated. I don't understand how that works. I wonder
if two passes would be simpler?
I doubt it becomes much simpler, but her
On Fri, Sep 16, 2011 at 3:07 PM, Heikki Linnakangas <
heikki.linnakan...@enterprisedb.com> wrote:
> That looks awfully complicated. I don't understand how that works. I wonder
> if two passes would be simpler?
>
I doubt it becomes much simpler, but here it is.
--
With best regards,
Alexander
