Date: Fri, 16 Apr 2021 20:46:17 +0000 From: bugzilla-noreply@freebsd.org To: net@FreeBSD.org Subject: [Bug 254333] [tcp] sysctl net.inet.tcp.hostcache.list hangs Message-ID: <bug-254333-7501-50USTGnRx7@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-254333-7501@https.bugs.freebsd.org/bugzilla/> References: <bug-254333-7501@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D254333 --- Comment #33 from commit-hook@FreeBSD.org --- A commit in branch stable/13 references this bug: URL: https://cgit.FreeBSD.org/src/commit/?id=3D4052275c2fc5f96b4a208404733713959= afe68f6 commit 4052275c2fc5f96b4a208404733713959afe68f6 Author: Richard Scheffenegger <rscheff@FreeBSD.org> AuthorDate: 2021-04-01 08:00:32 +0000 Commit: Richard Scheffenegger <rscheff@FreeBSD.org> CommitDate: 2021-04-16 19:44:00 +0000 tcp: For hostcache performance, use atomics instead of counters As accessing the tcp hostcache happens frequently on some classes of servers, it was recommended to use atomic_add/subtract rather than (per-CPU distributed) counters, which have to be summed up at high cost to cache efficiency in a hot codepath. PR: 254333 MFC after: 2 weeks Sponsored by: NetApp, Inc. Reviewed By: #transport, tuexen, jtl Differential Revision: https://reviews.freebsd.org/D29522 (cherry picked from commit 529a2a0f2765f6c57c50a5af6be242c03bf714e3) sys/netinet/tcp_hostcache.c | 24 +++++++++++------------- sys/netinet/tcp_hostcache.h | 2 +- 2 files changed, 12 insertions(+), 14 deletions(-) --=20 You are receiving this mail because: You are on the CC list for the bug.=
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