Date: Sun, 27 Jan 2013 19:54:27 +0200 From: Andriy Gapon <avg@FreeBSD.org> To: Adrian Chadd <adrian@FreeBSD.org> Cc: freebsd-stable@FreeBSD.org Subject: Re: time issues and ZFS Message-ID: <510569D3.2030000@FreeBSD.org> In-Reply-To: <CAJ-VmokZV2g3%2BTFJAFNnJ1MD%2BigrLxN9fGd4267UmPJMWsX-aw@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> <E1TxaZv-0005fj-5m@kabab.cs.huji.ac.il> <CAJ-VmokQbZFGmmy=KkEmP%2B7a6DQRGhdgupqF4sNCGJYxvA-B0g@mail.gmail.com> <50FFFA8B.4040008@FreeBSD.org> <CAJ-Vmon7pT6=UJ5ppRO_3SWRw-QM9W2Bz1=ffq2ovjxHGyOUrA@mail.gmail.com> <5103ACAE.5060406@FreeBSD.org> <CAJ-VmokZV2g3%2BTFJAFNnJ1MD%2BigrLxN9fGd4267UmPJMWsX-aw@mail.gmail.com>
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on 27/01/2013 19:27 Adrian Chadd said the following: > On 26 January 2013 02:15, Andriy Gapon <avg@freebsd.org> wrote: >> on 23/01/2013 18:20 Adrian Chadd said the following: >>> It may be a quirk of an older 9.x, which is fixed in -HEAD. It may be >>> a quirk of the older generation celeron hardware - in which case, we >>> need to tell the user somehow.. >> >> This is not software related at all. It's the hardware feature (or its absence). >> I wonder if your celerons report PBE feature. > > What am I looking for? PBE in dmesg > And personally, requiring (much) more recent hardware to get > sane/correct (btu inefficient) behaviour out of the timekeeping > framework is a little .. suboptimal. :) Well, I never knew about this issue before but I always assumed that the reasonable behavior was the behavior. And I never encountered any evidence to the contrary. -- Andriy Gapon
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