Andres Freund 5364b357fb Increase maximum number of clog buffers. ... Benchmarking has shown that the current number of clog buffers limits scalability. We've previously increased the number in 33aaa139, but that's not sufficient with a large number of clients. We've benchmarked the cost of increasing the limit by benchmarking worst case scenarios; testing showed that 128 buffers don't cause a regression, even in contrived scenarios, whereas 256 does There are a number of more complex patches flying around to address various clog scalability problems, but this is simple enough that we can get it into 9.6; and is beneficial even after those patches have been applied. It is a bit unsatisfactory to increase this in small steps every few releases, but a better solution seems to require a rewrite of slru.c; not something done quickly. Author: Amit Kapila and Andres Freund Discussion: CAA4eK1+-=18HOrdqtLXqOMwZDbC_15WTyHiFruz7BvVArZPaAw@mail.gmail.com		2016-04-08 08:25:59 -07:00
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brin	Improve index AMs' opclass validation procedures.	2016-01-21 19:47:15 -05:00
common	Add a 'parallel_degree' reloption.	2016-04-08 11:14:56 -04:00
gin	Fix memory leak in repeated GIN index searches.	2016-03-13 16:44:31 -04:00
gist	Fix lossy KNN GiST when ordering operator returns non-float8 value.	2016-02-02 15:20:33 +03:00
hash	Improve ResourceOwners' behavior for large numbers of owned objects.	2016-01-26 15:20:30 -05:00
heap	Extend relations multiple blocks at a time to improve scalability.	2016-04-08 02:04:46 -04:00
index	Support CREATE ACCESS METHOD	2016-03-23 23:01:35 -03:00
nbtree	Detect SSI conflicts before reporting constraint violations	2016-04-07 11:12:35 -05:00
rmgrdesc	Generic Messages for Logical Decoding	2016-04-06 10:05:41 +01:00
spgist	Introduce traversalValue for SP-GiST scan	2016-03-30 18:29:28 +03:00
tablesample	Update copyright for 2016	2016-01-02 13:33:40 -05:00
transam	Increase maximum number of clog buffers.	2016-04-08 08:25:59 -07:00
Makefile	TABLESAMPLE, SQL Standard and extensible	2015-05-15 14:37:10 -04:00