Date: Tue, 22 Jan 2013 11:55:39 +0200 From: Daniel Braniss <danny@cs.huji.ac.il> To: Adrian Chadd <adrian@freebsd.org> Cc: freebsd-stable@freebsd.org, Ian Lepore <ian@freebsd.org> Subject: Re: time issues and ZFS Message-ID: <E1TxaZv-0005fj-5m@kabab.cs.huji.ac.il> In-Reply-To: <CAJ-VmomdQORjs55ooW55Rgg0i1M13PPtnmCPRrp__btEWQz=4g@mail.gmail.com> References: <E1TxFcr-0006dx-MX@kabab.cs.huji.ac.il> <1358780588.32417.414.camel@revolution.hippie.lan> <E1TxJP2-000DS8-DJ@kabab.cs.huji.ac.il> <1358783667.32417.434.camel@revolution.hippie.lan> <CAJ-Vmo=2Dmf4Lb-uoUQDrybyRSS=_bnV5KcNYGg5MnMxfhhu7w@mail.gmail.com> <E1TxYHa-0002yo-4Y@kabab.cs.huji.ac.il> <CAJ-VmomdQORjs55ooW55Rgg0i1M13PPtnmCPRrp__btEWQz=4g@mail.gmail.com>
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> Daniel, > > Have you run tests with the machdep.idle value changed, and fiddling > kern.eventtimer.periodic / kern.eventtimer.idletick ? Adrian, not yet, for several reasons: 1- as I explained, I can't realy force the problem, it happens when we run some zfs scripts, like mirror, but have to wait till enough changes happened on the source, usualy after 24hs. 2- changing to LAPIC seems to have solved the problem. 3- I'm now learning all I can about event timers and you have not answered some of my questions :-) danny
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