Date: Fri, 02 Apr 2021 20:29:43 +0000 From: "Dave Cottlehuber" <dch@skunkwerks.at> To: "Mathieu Chouquet-Stringer" <me+freebsd@mathieu.digital>, freebsd-fs <freebsd-fs@freebsd.org>, freebsd-current <freebsd-current@freebsd.org> Cc: bryanv@freebsd.org Subject: Re: Scrub incredibly slow with 13.0-RC3 (as well as RC1 & 2) Message-ID: <3c00c109-ed5a-496c-9339-22b3dc31747a@www.fastmail.com> In-Reply-To: <YGQ6IyE6B31a6EV0@weirdfishes> References: <YFhuxr0qRzchA7x8@weirdfishes> <YF8eL0dmSh6H8HX2@ceres.zyxst.net> <YF9YE282kOWN7ubr@weirdfishes> <YGMq6i%2BUIhNANHXW@weirdfishes> <YGQ6IyE6B31a6EV0@weirdfishes>
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On Wed, 31 Mar 2021, at 09:00, Mathieu Chouquet-Stringer wrote: > On Tue, Mar 30, 2021 at 03:43:06PM +0200, Mathieu Chouquet-Stringer wrote: > > Hello, > > > > TL;DR: we need kvmclock support in FreeBSD > > scan: scrub repaired 0B in 12:33:11 with 0 errors on Wed Mar 31 03:33:14 2021 > > It's almost twice as fast with kvmclock support... Does the issue also go away if you use `TSC-slow` ? I investigated exactly this issue yesterday[1], and it's great to see Bryan's patch resurrected, I will try it here and report back too. [1]: https://hackmd.io/HhYlbsDJTpCWHSwlrwrY_w A+ Dave
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