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    SubjectRe: Why processes on linux loses signals?
    Date
    > In short, processes on linux loses signals.  It happens
    > rarely, but it happens, and the frequency of this happening
    > is enough to be annoying.
    >
    > ...
    >
    > The problem becomes much much worse when a system has multiple
    > cores... But with even second core the issue emerges almost
    > immediately ...

    Looks like a classical race description.
    Double-check your user-space code for signal-related races.


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