Messages in this thread | | | Subject | Re: [RT] read_tsc: ACK! TSC went backward! Unsynced TSCs? | From | Lee Revell <> | Date | Mon, 28 Nov 2005 12:39:28 -0500 |
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On Mon, 2005-11-28 at 09:30 -0800, thockin@hockin.org wrote: > The kernel's use of TSC is wholly incorrect. TSCs can ramp up and > down and *do* vary between nodes as well as between cores within a > node. You really can not compare TSCs between cpu cores at all, as is > (and the kernel assumes 1 global TSC in at least a few places).
That's one way to look at it; another is that the AMD dual cores have a broken TSC implementation. The kernel's use of the TSC was never a problem in the past...
Lee
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