Messages in this thread | | | From | Mark-Andre Hopf <> | Subject | Re: gettimeofday() non-monotonic on SMP kernel version 2.2.10 | Date | 2 Aug 2000 07:50:06 GMT |
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"Sam Thompson" <samuelt@caltech.edu> wrote:
> to gather data using a quad-processor SGI Visual Workstation 540. However, > we are having trouble that we have diagnosed as a timing issue. > gettimeofday() is non-monotonic
This is a known bug on some machines with asynchronous TSCs. To make sure Linux can handle it use at last 2.2.15!
> Can anyone point me to a patchfor 2.2.10 or a way to quickly modify the > 2.2.10 code to fix this problem.
When you really have to stay with 2.2.10 (something I don't recommend), try the patch from Ingo Molnar I've uploaded at
http://www.informatik.uni-rostock.de/~hopf/linux-patches/
Bye, Mark
-- mark-andre.hopf@innominate.de software engineer innominate AG networkingpeople tel: +49.30.308806-0 fax: -77 web: http://innominate.de
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