JINMEI Tatuya 065ffb2eb8 Optimize database decref by avoiding locking with refs > 1 ... Previously, this function always acquires a node write lock if it might need node cleanup in case the reference decrements to 0. In fact, the lock is unnecessary if the reference is larger than 1 and it can be optimized as an "easy" case. This optimization could even be "necessary". In some extreme cases, many worker threads could repeat acquring and releasing the reference on the same node, resulting in severe lock contention for nothing (as the ref wouldn't decrement to 0 in most cases). This change would prevent noticeable performance drop like query timeout for such cases. Co-authored-by: JINMEI Tatuya <jtatuya@infoblox.com> Co-authored-by: Ondřej Surý <ondrej@isc.org> (cherry picked from commit 7f4471594d)		2025-01-22 14:31:09 +01:00
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bind9	Remove redundant parentheses from the return statement	2024-11-19 16:06:16 +01:00
dns	Optimize database decref by avoiding locking with refs > 1	2025-01-22 14:31:09 +01:00
irs	Reduce sizeof isc_sockaddr from 152 to 48 bytes	2025-01-22 14:12:38 +01:00
isc	Reduce struct isc__nm_uvreq size from 1560 to 560 bytes	2025-01-22 14:12:38 +01:00
isccc	Remove redundant parentheses from the return statement	2024-11-19 16:06:16 +01:00
isccfg	Implement 'max-query-count'	2024-12-06 15:17:53 +00:00
ns	Remove --with-tuning=small/large configuration option	2025-01-22 14:16:40 +01:00
.gitignore	The isc/platform.h header has been completely removed	2021-07-06 05:33:48 +00:00
Makefile.am	move samples/resolve.c to bin/tests/system	2021-04-16 14:29:43 +02:00