Date: Wed, 8 Jan 2014 14:01:03 +0000 From: Steve O'Hara-Smith <steve@sohara.org> To: freebsd-questions@freebsd.org Cc: Polytropon <freebsd@edvax.de> Subject: Re: Server hang Message-ID: <20140108140103.965e698616052d7587c31418@sohara.org> In-Reply-To: <20140108143812.bcfc9a75.freebsd@edvax.de> References: <CALeO_hORJin5OOkA45fG%2BHFrai6XhPpOob4u-NhnJkLGyorvhA@mail.gmail.com> <20140106182826.28018a2f@X220.alogt.com> <CALeO_hMOhe_Cf0NQa6p0wrHC7LdA7r6SwkZCOUrqjYUO=sPUYA@mail.gmail.com> <alpine.BSF.2.00.1401061303340.24851@mail.fig.ol.no> <CALeO_hO=NaErzsY3N0KuDmzE_WkMwms9pp-L14h=Hb0eheCKtQ@mail.gmail.com> <20140107085545.06310df9.freebsd@edvax.de> <CALeO_hN81jxUvf_Q4kLHL0%2BwWxn-7V42=CeFsxod6fawbFB2PA@mail.gmail.com> <20140107115216.1f06587d.freebsd@edvax.de> <20140107211012.GA47988@neutralgood.org> <20140108143812.bcfc9a75.freebsd@edvax.de>
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On Wed, 8 Jan 2014 14:38:12 +0100 Polytropon <freebsd@edvax.de> wrote: > On Tue, 7 Jan 2014 16:10:12 -0500, kpneal@pobox.com wrote: > > So a memory tester > > cannot tell if a stick of memory is _good_; it can only tell that it is > > _bad_. > > That is a very good summary. > > To add some science-y statement: It will tell you that memory > is bad in _finite_ time, but requires infinite time to make > sure it's actually good by running (without end). :-) <nitpick>Any memory will go bad given infinite time</nitpick> <nitpick>Even really good ECC memory has an error rate, no memory is perfect</nitpick> -- Steve O'Hara-Smith <steve@sohara.org>
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