Heikki Linnakangas 031cc55bbe Optimize pglz compressor for small inputs. ... The pglz compressor has a significant startup cost, because it has to initialize to zeros the history-tracking hash table. On a 64-bit system, the hash table was 64kB in size. While clearing memory is pretty fast, for very short inputs the relative cost of that was quite large. This patch alleviates that in two ways. First, instead of storing pointers in the hash table, store 16-bit indexes into the hist_entries array. That slashes the size of the hash table to 1/2 or 1/4 of the original, depending on the pointer width. Secondly, adjust the size of the hash table based on input size. For very small inputs, you don't need a large hash table to avoid collisions. Review by Amit Kapila.		2013-07-01 11:00:14 +03:00
..
backend	Optimize pglz compressor for small inputs.	2013-07-01 11:00:14 +03:00
bin	Update pg_resetxlog's documentation on multixacts	2013-06-27 15:32:58 -04:00
common	pgindent run for release 9.3	2013-05-29 16:58:43 -04:00
include	Fix cpluspluscheck in checksum code	2013-06-30 10:25:43 -04:00
interfaces	ecpg: Consistently use mm_strdup()	2013-06-29 22:14:56 -04:00
makefiles	Blind attempt at fixing the non-MSVC Windows builds	2013-02-22 11:51:15 -03:00
pl	PL/Python: Fix type mixup	2013-06-13 21:42:42 -04:00
port	Send SIGKILL to children if they don't die quickly in immediate shutdown	2013-06-28 17:49:46 -04:00
template	Remove _FORTIFY_SOURCE	2012-10-10 21:42:38 -04:00
test	ALTER TABLE ... ALTER CONSTRAINT for FKs	2013-06-29 00:27:30 +01:00
timezone	pgindent run for release 9.3	2013-05-29 16:58:43 -04:00
tools	Cooperate with the Valgrind instrumentation framework.	2013-06-26 20:22:25 -04:00
tutorial	Modernize string literal syntax in tutorial example.	2013-01-19 17:20:32 -05:00
.gitignore	Convert cvsignore to gitignore, and add .gitignore for build targets.	2010-09-22 12:57:04 +02:00
bcc32.mak	Autoconfiscate selection of 64-bit int type for 64-bit large object API.	2012-10-07 21:52:43 -04:00
DEVELOPERS	Replace a couple of references to files that no longer exist in the source	2009-05-04 08:08:47 +00:00
Makefile	Create libpgcommon, and move pg_malloc et al to it	2013-02-12 11:21:05 -03:00
Makefile.global.in	Remove whitespace from end of lines	2013-05-30 21:05:07 -04:00
Makefile.shlib	Add pkg-config files for libpq and ecpg libraries	2013-03-31 16:58:40 -04:00
nls-global.mk	NLS: Use msgmerge --previous option	2012-12-13 23:12:12 -05:00
win32.mak	Autoconfiscate selection of 64-bit int type for 64-bit large object API.	2012-10-07 21:52:43 -04:00