I''m noticed that process that dumping a core is in uninterruptible sleep, so it can''t be killed with SIGKILL, but when I''m trying to emulate this behavior using pipe commands that receives coredump I can
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Yes, you must call set_current_state() before calling schedule(), because otherwise the scheduler will not remove the task from the run queue (if you just want to potentially allow other tasks
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In short, making I/O uninterruptible is for the purpose of making the I/O task finish ASAP, without being interfered by signals. Some related knowledge that I gained from the book: The word
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I have a VirtualBox process hanging around which I tried to kill (KILL/ABORT) but without success. The parent pid is 1 (init). top shows the process as D which is documented as "uninterruptible sl...
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Uninterruptible Sleep usually caused by I/O, sometime it''s caused by I/O trashing because of low memory. Only by looking your perfetto trace can figure it out.
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As you could read from that answer, setting the current process state to TASK_UNINTERRUPTIBLE is needed for make schedule() call, performed by that thread, to put the
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When looking at the process with "ps ax" the stat column is "Dl" which means "uninterruptible sleep (usually IO)". Is it possible to find out more details on what the process is
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A process performing I/O will be put in D state (uninterruptable sleep), which frees the CPU until there is a hardware interrupt which tells the CPU to return to executing the program. See
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The Uninterruptible state is mostly used by device drivers waiting for disk or network I/O. When the process is sleeping uninterruptibly, signals accumulated during the sleep are noticed when
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