Date: Fri, 6 Nov 2015 17:51:27 +0100 From: Hans Petter Selasky <hps@selasky.org> To: Ian Lepore <ian@freebsd.org>, Luigi Rizzo <rizzo@iet.unipi.it> Cc: Rasool Al-Saadi <ralsaadi@swin.edu.au>, "freebsd-net@freebsd.org" <freebsd-net@freebsd.org>, FreeBSD Current <freebsd-current@freebsd.org>, Alexander Motin <mav@FreeBSD.org> Subject: Re: Timing issue with Dummynet on high kernel timer interrupt Message-ID: <563CDA8F.5010901@selasky.org> In-Reply-To: <1446828229.91534.417.camel@freebsd.org> References: <6545444AE21C2749939E637E56594CEA3C0DCCC4@gsp-ex02.ds.swin.edu.au> <5638B7B5.3030802@selasky.org> <6545444AE21C2749939E637E56594CEA3C0DE7FF@gsp-ex02.ds.swin.edu.au> <563B2703.5080402@selasky.org> <6545444AE21C2749939E637E56594CEA3C0E0BD9@gsp-ex02.ds.swin.edu.au> <563C6864.2090907@selasky.org> <CA%2BhQ2%2Bhm2z0MkB-8w5xJM7%2Biz13r_ZjwmpZBnb30_D_48gaf-w@mail.gmail.com> <563C786C.1050305@selasky.org> <CA%2BhQ2%2Bj0WiGgzV119M1ZQiXP5Z7fq7deVxDPkOhvTc7hpTETKw@mail.gmail.com> <563CC186.9000807@selasky.org> <563CD533.2000909@selasky.org> <1446828229.91534.417.camel@freebsd.org>
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On 11/06/15 17:43, Ian Lepore wrote: > On Fri, 2015-11-06 at 17:28 +0100, Hans Petter Selasky wrote: >> Hi, > > Do the test II results change with this setting? > > sysctl kern.timecounter.alloweddeviation=0 > Yes, it looks much better: debug.total: 10013 -> 0 debug.total: 10013 -> 0 debug.total: 10012 -> 0 debug.total: 10012 -> 0 debug.total: 10012 -> 0 debug.total: 10013 -> 0 debug.total: 10012 -> 1 debug.total: 10013 -> 0 debug.total: 10013 -> 0 debug.total: 10013 -> 0 debug.total: 10012 -> 0 debug.total: 10013 -> 0 debug.total: 10013 -> 0 --HPS
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