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Old 28th February 2010
J65nko J65nko is offline
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Default ERRATA: Deadlock in ULE scheduler (FreeBSD 7.0, 7.1, and 7.2.)

Read the complete Errata at http://lists.freebsd.org/pipermail/f...ry/001309.html
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Old 28th February 2010
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TerryP TerryP is offline
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Originally Posted by III. Impact
Affected systems may become deadlocked and require power-cycling. The chance of a deadlock occurring increases with the number of CPUs. There may be other aggravating factors such as running powerd(8). But eventually any multi-processor system using the ULE scheduler will become deadlocked.
This makes me wonder if my laptops knack for "Hanging" when relying on powerd, may in part be due to ULE, rather then just some kind of ACPI problem. In one incarnation or another, I've been using ULE on my systems for ages, even before the 'new' one became standard issue, and the problems been on/off, but more so since the heavy work on ULE.

Thanks for the interesting news J65nko.
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