Date: Fri, 23 Feb 2018 03:36:37 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-fs@FreeBSD.org Subject: [Bug 219049] ftruncate() slow on UFS+journaled softupdates Message-ID: <bug-219049-3630-bDh38rlHnm@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-219049-3630@https.bugs.freebsd.org/bugzilla/> References: <bug-219049-3630@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D219049 Alexander Motin <mav@FreeBSD.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |mav@FreeBSD.org --- Comment #7 from Alexander Motin <mav@FreeBSD.org> --- Could somebody experiencing the problem to look on the disk which was originally reported as 100% busy during the test with `gstat -I 1s -pod`? = It would show distribution of I/O operations between reads, writes, deletes and cache flushes, providing counts, sizes and average latency for which. It c= ould be a starting point is the problem is indeed disk-bound. As I understand, journaled UFS may started to use cache flushes, not used before, and I can theoretically guess some scenarios when some disks are not handling it well. --=20 You are receiving this mail because: You are the assignee for the bug.=
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