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how to find out what it is waiting for
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
In Linux, what do all the values in the "top" command mean?
The man page says what the state codes are mapped to, but not what they actually mean. From the top man page: ''D'' = uninterruptible sleep ''R'' = running ''S'' = sleeping
linux
For Linux "defunct" and "zombie" processes are the same. From man ps: Processes marked <defunct> are dead processes (so-called "zombies") that remain because
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On one particular system we see WIS-Streamer get stuck in an TASK_UNINTERRUPTIBLE state; From the command line: the ps status for the process is
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Linux Process States
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
linux
I understand these are uninterruptible sleep states often related to waiting for data from hardware such as a hard disk. This is a production server so rebooting is a very last
The Best Uninterruptible Power Supply (UPS)
An uninterruptible power supply, or UPS, is basically a surge protector, battery, and power inverter — which turns the battery''s stored energy into usable power — in one.
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How to stop ''uninterruptible'' process on Linux?
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
Staco E3
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In the event of an AC power failure, the Staco E3 UPS will automatically transfer to battery power and continue to provide power without any interruption for the full amount of time you select.
linux
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 Best UPS Battery Backups
The best UPS battery backups offer enough power and protection to keep your devices running well when there''s no power. Here are our recommendations based on expert
Eaton 9355 UPS | Three-Phase, Double Conversion UPS
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If you refuse to settle for anything less than the best, the APC Back-UPS PRO 1500VA is the right uninterruptible power supply for you. Its 1500VA/900W capacity should be
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Why there is a state called `TASK_UNINTERRUPTIBLE` in Linux
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
Do we need to call set_current_state (TASK
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
