2019年10月18日 · An uninterruptible process is a process which happens to be in a system call (kernel function) that cannot be interrupted by a signal. To understand what that means, you need to understand the concept of an interruptible system call.

2014年4月8日 · 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.

I'm testing some functionality to monitor processes and I need to emulate long core dump with determined "delay" (for example I need to make a process to "dump core" for 30 seconds). I'm noticed that

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 ...

2013年1月27日 · 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 ...

2015年4月25日 · Generally speaking, uninterruptible sleep states are considered undesirable. Under normal circumstances, they cannot be triggered by user applications except by accident (e.g, by attempting to read from a storage device that is not responding correctly, or by causing the system to swap).

2016年1月20日 · TASK_UNINTERRUPTIBLE: The proccess is waiting on certain special cases of event, such as completion of of a disk I/O. If signal is generated (including SIGSTOP and SIGKILL) for a process in this state, then the signal is not …

2016年3月14日 · 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!

2012年11月19日 · 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.

2018年7月19日 · I have a system with a Zombie process (python3 running multiple threads) which has many threads. The problem is, the application htop gets stuck in uninterruptible disk sleep (D). straceing htop