Date: Fri, 22 Jun 2018 10:23:46 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 228669] CLOCK_PROCESS_CPUTIME_ID is unnecessarily inaccurate Message-ID: <bug-228669-227-sR3cqoSUXY@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-228669-227@https.bugs.freebsd.org/bugzilla/> References: <bug-228669-227@https.bugs.freebsd.org/bugzilla/>
next in thread | previous in thread | raw e-mail | index | archive | help
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D228669 --- Comment #6 from commit-hook@freebsd.org --- A commit references this bug: Author: cperciva Date: Fri Jun 22 10:23:32 UTC 2018 New revision: 335553 URL: https://svnweb.freebsd.org/changeset/base/335553 Log: Improve the accuracy of the POSIX "process CPU-time" clocks by adding the used portion of the current thread's time slice if the current thread belongs to the process being queried (i.e., if clock_gettime is invoked with a clock ID of CLOCK_PROCESS_CPUTIME_ID or the value provided by passing getpid(2) to clock_getcpuclockid(3)). The CLOCK_VIRTUAL and CLOCK_PROF timers already make this adjustment via long-standing code in calcru(), but since those timers are not specified by POSIX it seems useful to add it here so that the higher accuracy is available to code which aims to be portable. PR: 228669 Reported by: Graham Percival Reviewed by: kib MFC after: 1 week Changes: head/sys/kern/kern_time.c --=20 You are receiving this mail because: You are the assignee for the bug.=
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?bug-228669-227-sR3cqoSUXY>