Willy Tarreau b20aa9eef3 MAJOR: tasks: create per-thread wait queues ... Now we still have a main contention point with the timers in the main wait queue, but the vast majority of the tasks are pinned to a single thread. This patch creates a per-thread wait queue and queues a task to the local wait queue without any locking if the task is bound to a single thread (the current one) otherwise to the shared queue using locking. This significantly reduces contention on the wait queue. A test with 12 threads showed 11 ms spent in the WQ lock compared to 4.7 seconds in the same test without this change. The cache miss ratio decreased from 19.7% to 19.2% on the 12-thread test, and its performance increased by 1.5%. Another indirect benefit is that the average queue size is divided by the number of threads, which roughly removes log(nbthreads) levels in the tree and further speeds up lookups.		2018-10-15 19:04:40 +02:00
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common	MINOR: tools: add a new function atleast2() to test masks for more than 1 bit	2018-10-15 13:25:06 +02:00
import	BUILD: threads/plock: fix a build issue on Clang without optimization	2017-11-20 21:06:35 +01:00
proto	MAJOR: tasks: create per-thread wait queues	2018-10-15 19:04:40 +02:00
types	MINOR: h1: Add the flag H1_MF_NO_PHDR to not add pseudo-headers during parsing	2018-10-12 16:15:18 +02:00