Date: Thu, 13 Apr 2023 16:35:27 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 270785] Performance and power efficiency regression due to pthread_cond_timedwait() changes Message-ID: <bug-270785-227-SUufIffR4g@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-270785-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=270785 --- Comment #3 from Mark Johnston <markj@FreeBSD.org> --- So minecraft is generating many, many more calls to _umtx_op() than before. If the kernel commit is reverted, and nothing else changes, does the number of calls stay the same? If not, then there may indeed be a kernel bug. It would be useful to see the timeout being passed. Some output from a dtrace script like: # dtrace -n 'fbt::do_wait:entry /args[3] && pid == <pid of minecraft process>/{print(*args[3]);}' would be useful. -- You are receiving this mail because: You are the assignee for the bug.help
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