Date: Wed, 21 Sep 2011 05:48:46 +0000 (UTC) From: Anton Yuzhaninov <citrin@citrin.ru> To: freebsd-performance@freebsd.org Subject: Re: hwpmc overflow Message-ID: <j5btru$rg0$1@dough.gmane.org> References: <j5ae29$e6g$1@dough.gmane.org> <j5asv4$p7e$1@dough.gmane.org> <CAJ-Vmo=m079Dko-erfSdWZaX6nqjxrTVt1U8P0kOK27g5kD8Bw@mail.gmail.com>
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On Wed, 21 Sep 2011 09:27:33 +0800, Adrian Chadd wrote: AC> Is this an AMD class CPU? AC> AC> The way the counters work on some platforms is that they count _up_ to AC> an overflow value, trigger the overflow interrupt, and PMC then is AC> supposed to calculate what the original value was. AC> It sounds like maybe that isn't working correctly for a certain class AC> of counters? CPU: Intel(R) Xeon(R) CPU E5645 @ 2.40GHz -- Anton Yuzhaninov
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