If you enter more than 100, it goes to 100, and less than 1 goes to 1. It can be anything from 1 to 100, and it is in seconds. This sets how often it refreshes the data. It has 2 main sections, Behaviour and Information Fields (Columns) This is the preferences window on the processes tab. Google doesn't know, and this is completely blank for me so.? What is the "Waiting Channel" of a process? Those include network sockets, hardware, files, and so on since most of them are just files, in Unix-like systems. A task has to wait for resources, which can be data or processing time. The waiting channel is the place in the Kernel where the task is currently waiting. Typically it will display the path to the executabe file.įor example my processes named Chrome were all launched with This is the command that is run to start the application. You'll probably find that most applications you're running are at nice '0', which means that they are running with normal priority and none will get preferential treatment by the scheduler over another. This is a number in the range of -20 (highest priority) to 19 (lowest). 'nice' refers to the priority the process gets on your CPU. It has more precise control over it (-20 to 19 has 40 options, where as Very How to Very High has 5). This is simply the Priority, expressed in a numerical format. This can be sorted from Most recent to Oldest and Oldest to Most recent. That is pretty close to the time you turned it on (for this to be precise for the start up time, you have to have enabled See All Processes). This can be useful for seeing when you started an application, but also when you booted your machine up - if you sort it, typically there will be a whole load with an identical time at the top. This shows how much is being used by each process.Īmount of memory assigned to multiple processes. It maps memory addresses used by a program, called virtual addresses, into physical addresses in computer memory. Virtual memory is a memory management technique that is implemented using both hardware and software. This is primarily used to keep an app (like the Arista transcoder) from eating all of the cpu time and slowing the system to a crawl, OR, for allowing one app to suck up as much CPU as it can regardless of the consequences. There are 5 options - Very Low, Low, Normal, High, Very High.Īn app running with higher priority gets more access to cpu time as compared to an app running with low priority. This displays the priority of the app - how much CPU it is allowed to use compared to other processes. Because of this, you never see 0.5MiB of RAM, it is always 500 KiB. If it is less than 1 MiB (1024 KiB) it displays in KiB. If it is less than 1 GiB (1024 MiB) it displays in MiB. It is always rounded to 1 decimal place, but the units vary. This is the amount of RAM being used by that process. This number may be used in a command, allowing processes to be manipulated, such as killing it altogether. The process identifier (normally referred to as the PID) is a number used by most operating system to temporarily identify a process. This is useful when you want to kill a specific process, but it has others with the same name: This is a unique number for each process and the only way of identifying identically named processes reliably. The ID field shows the identification number of the process. By default it is divided by the CPU count (meaning if you have a dual core, and one process is using 100% of a single CPU, it will show up as 25%). This shows the % of CPU being used by that process. Then it will show those owned by other users, including root. To see those run by other users, click View (top, right hand corner) and then All Processes. By default, you can only see your own processes. It can be sorted Alphabetically A-Z or Z-A. This is useful, as it means if you want to get rid of all your nautilus windows, you can execute a simple command: pkill nautilus Multiple processes can have the same name, but different process IDs. The process name is the name of the process. Please take any section of this to use in an answer - but a link back is appreciated :-) Processes Tab Process Name This is a topic that is very sparse, not just here but in general on the internet.
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