| From: | Vladimir Sitnikov <sitnikov(dot)vladimir(at)gmail(dot)com> |
|---|---|
| To: | PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Cc: | Andres Freund <andres(at)anarazel(dot)de>, Greg Stark <stark(at)mit(dot)edu>, Tatsuo Ishii <ishii(at)postgresql(dot)org>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Shay Rojansky <roji(at)roji(dot)org> |
| Subject: | Re: Slowness of extended protocol |
| Date: | 2016-08-01 12:12:08 |
| Message-ID: | CAB=Je-EkcvERygZJNDEFRJRs_dixzfLFZvX7j1Xy+a+6Z9982A@mail.gmail.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
>It it a bug? It think exec_parse_message should set is_oneshot=true for
parse message with empty statement names.
I've tried "build from git as of 74d8c95b7456faefdd4244acf854361711fb42ce",
and it produced PostgreSQL 9.6beta3 on x86_64-apple-darwin15.5.0, compiled
by Apple LLVM version 7.0.0 (clang-700.1.76), 64-bit
The attached patch passes `make check` and it gains 31221 -> 33547
improvement for "extended pgbench of SELECT 1".
The same version gains 35682 in "simple" mode, and "prepared" mode
achieves 46367 (just in case).
| Attachment | Content-Type | Size |
|---|---|---|
| 0001-WIP-try-CreateOneShotCachedPlan-for-unnamed-statemen.patch | application/octet-stream | 1.4 KB |
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Etsuro Fujita | 2016-08-01 12:14:58 | Confusing docs about GetForeignUpperPaths in fdwhandler.sgml |
| Previous Message | Etsuro Fujita | 2016-08-01 11:54:27 | Re: Oddity in EXPLAIN for foreign/custom join pushdown plans |