Open a cache of riches with lsof
Top
…
Pressing r ("renice") changes the "nice" value of a process, which determines its priority. A lower nice value means a high priority. Possible values range from -20 to 19. To do this, you must specify the process ID (PID) and the nice value. Because the process order constantly changes to reflect the CPU utilization in this view, it is difficult to read the PID of a process from the table given a default refresh interval of three seconds. Pressing d or s sets a different interval, for example, 10 seconds. You can also send a signal to the process with k ("kill," see Table 3). Without further instructions, Top sends the signal SIGTERM, which instructs the process to exit.
…
Table 2
Process States
| Abbreviation | Status | Meaning |
|---|---|---|
| D |
Delay |
The process is sleeping, waiting in a system call, without the ability to interrupt, typically for an I/O request. ps aux | grep "[D]" shows which processes are affected for wait I/O. |
| R |
Running |
The process is running or was just running. |
| S |
Sleeping |
The process is sleeping, waiting, with the ability to interrupt – for example, for a response to a network request, a request from another process, or user input. |
| T |
Traced |
The process has been stopped – for example, to step through it with a debugger. |
| Z |
Zombie |
The process has terminated, and the kernel is still waiting for the parent process to pick up its return value. |
Infos
- Loop device: http://en.wikipedia.org/wiki/Loop_device
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