Date: Thu, 23 Sep 2010 17:35:40 +0300 From: Andriy Gapon <avg@icyb.net.ua> To: "Daniel O'Connor" <doconnor@gsoft.com.au> Cc: Alexander Motin <mav@freebsd.org>, FreeBSD Stable <freebsd-stable@freebsd.org> Subject: Re: SuperMicro i7 (UP) - very slow performance Message-ID: <4C9B65BC.4010305@icyb.net.ua> In-Reply-To: <BCA95334-69EA-4D9F-8EE6-DBC3155FC866@gsoft.com.au> References: <mailpost.1285173904.332223.70365.mailing.freebsd.stable@FreeBSD.cs.nctu.edu.tw> <mailpost.1285202775.8039756.86645.mailing.freebsd.stable@FreeBSD.cs.nctu.edu.tw> <4C9B0F2C.20601@FreeBSD.org> <4C9B406D.3000201@icyb.net.ua> <BCA95334-69EA-4D9F-8EE6-DBC3155FC866@gsoft.com.au>
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on 23/09/2010 15:37 Daniel O'Connor said the following: > > On 23/09/2010, at 21:26, Andriy Gapon wrote: >> on 23/09/2010 11:26 Alexander Motin said the following: >>> PS: AFAIK dev.cpu.0.freq won't report you if frequency was lowered due >>> to overheating. >> >> I think that you are correct about this. >> And last I checked we simply ignored thermal throttling interrupt. > > I could not get cpufreq to show a lower frequency when I tried overheating a CPU even though the performance dropped. > > It would be really nice if there was some notification of CPU throttling :) cpufreq is not designed to monitor what is going on in cpu. cpufreq knows what cpu supports and knows host to set a certain frequency (performance level rather). -- Andriy Gapon
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