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- How to stop uninterruptible process on Linux? - Stack Overflow
Killing an uninterruptible process succeeds, it just doesn't do so immediately The process won't disappear until it actually receives the signal So sending a signal alone is not enough to get rid of the process, you also have to wake it up from uninterruptible sleep Tanel Poder has written a great guide to analyse D state processes
- how to find out what it is waiting for - Stack Overflow
I have an daemon running on Debain on Arm Sometimes this daemon hangs is not responding anymore 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 waiting - for example which IO is hanging? Thanks!
- Why doing I O in Linux is uninterruptible? - Stack Overflow
The word "uninterruptible" should refer to "uninterruptible sleep" When a process is in uninterruptible sleep, it can NOT be waked up by signals, nor would it handle signals A process handles signals when: a it is running in kernel mode and is about to return to the user mode b it is about to enter and leave sleep state when the sleep is
- php-fpm processes falls in Uninterruptible sleep
Uninterruptible Sleep translates to I O A process in this state does not handle signals Thus, PHP-FPM can not restart a process that is in this state You probably have a bad hard drive, stale dead network mount (nfs, cifs?) the PHP scripts are trying to access, or a really bad case of I O contention
- TASK_UNINTERRUPTIBLE and process threads in linux kernel development . . .
scheduling parameters (includes TASK_UNINTERRUPTIBLE, TASK_INTERRUPTIBLE) stack; task id; the main() thread identifies the process; So TASK_INTERRUPTIBLE can be applied to each thread individually As such semaphores are perfectly valid to use for synchronising threads In this case if one thread blocks on a semaphore, it's jus that one thread
- Windows UPS (Uninterruptible Power Supply) service - turn off UPS?
I'm having trouble searching for this information -- people tend to misspell "Uninterruptible" (hrm, Firefox red-lined that but doesn't have an alternative) and "UPS" just gets hits for the shipping service Maybe I can do something through System ServiceController, or WMI? CLARIFICATION: Yes, I am talking about powering down the physical UPS
- Many open files leading to uninterruptible sleep D state
An uninterruptible D state is entered when a disk driver is seeking for some data in the disk and the disk has to be waited for for the process to continue Normally a process sticking on a D state is a consequence of bad hardware (which should not happen to you in the platform you are using) but the worst thing is to have log data amounting
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