mirror of
https://git.postgresql.org/git/postgresql.git
synced 2024-10-05 18:17:02 +02:00
8b9bc234ad
remove the infrastructure needed to enforce the limit, ie, the global LRU list of cache entries. On small-to-middling databases this wins because maintaining the LRU list is a waste of time. On large databases this wins because it's better to keep more cache entries (we assume such users can afford to use some more per-backend memory than was contemplated in the Berkeley-era catcache design). This provides a noticeable improvement in the speed of psql \d on a 10000-table database, though it doesn't make it instantaneous. While at it, use per-catcache settings for the number of hash buckets per catcache, rather than the former one-size-fits-all value. It's a bit silly to be using the same number of hash buckets for, eg, pg_am and pg_attribute. The specific values I used might need some tuning, but they seem to be in the right ballpark based on CATCACHE_STATS results from the standard regression tests. |
||
---|---|---|
.. | ||
backend | ||
bin | ||
include | ||
interfaces | ||
makefiles | ||
pl | ||
port | ||
template | ||
test | ||
timezone | ||
tools | ||
tutorial | ||
utils | ||
bcc32.mak | ||
DEVELOPERS | ||
Makefile | ||
Makefile.global.in | ||
Makefile.shlib | ||
nls-global.mk | ||
win32.mak |