| From: | Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com> |
|---|---|
| To: | Alexander Korotkov <aekorotkov(at)gmail(dot)com> |
| Cc: | PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Bug in new buffering GiST build code |
| Date: | 2012-05-30 09:01:51 |
| Message-ID: | 4FC5E1FF.4060102@enterprisedb.com |
| Views: | Whole Thread | Raw Message | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
On 28.05.2012 00:46, Alexander Korotkov wrote:
> On Sat, May 26, 2012 at 12:33 AM, Heikki Linnakangas<
> heikki(dot)linnakangas(at)enterprisedb(dot)com> wrote:
>
>> Attached is a patch to replace the path stacks with a hash table. With
>> this patch, the index build time in my test case dropped from 59 minutes to
>> about 55 minutes. I don'ẗ know how representative or repeatable this test
>> case is, but this definitely seems very worthwhile, not only because it
>> fixes the bug and makes the code simpler, but also on performance grounds.
>
> Cool, seems that we've both simplier and faster implementation of finding
> parent. Thanks!
Ok, I committed this now.
I also spotted and fixed another little oversight: the temporary file
didn't get deleted after the index build.
>> Alexander, do you still have the test environments and data lying around
>> that you used for GiST buffering testing last summer? Could you rerun some
>> of those tests with this patch?
>
> I think I can restore test environment and data. Will rerun tests soon.
Thanks!
--
Heikki Linnakangas
EnterpriseDB http://www.enterprisedb.com
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Tatsuo Ishii | 2012-05-30 09:06:20 | Re: pg_dump and thousands of schemas |
| Previous Message | Simon Riggs | 2012-05-30 08:49:58 | Re: hash index concurrency |