Second, you want to find the processes that are eating all your memory; in top use the M command to sort by memory use. You could use RES or VIRT fields, if you would like to sort by another memory field. The second part (upper-right corner) shows us standard information, such as a task summary, load average, and uptime. The bottom portion has every process on the system, organized by the top users of resources. Know what is happening in "real time" on your systems is in my opinion the basis to use and optimize your OS. List Top 15 Processes By Memory Usage. But there are some command line options that can be useful, one of which is the option to override the default sort field. This leads us to the end of our article on top commands to check the memory usage on Linux. Method 1 – Htop. # htop. Significantly, htop shows all running processes whereas top focuses on the top processes that consume the most system resources. It’s an incredibly lightweight tool and perfect for managing programs on Linux. The most popular Windows alternative is Process Explorer, which is free.If that doesn't suit you, our users have ranked more than 50 alternatives to htop and many of them are available for Windows so hopefully you can find a suitable replacement. By default the Htop command sorts the output through the CPU usage, which is common to all monitoring tools. Also, looking at CPU utilization htop is showing aggressive usage of CPU while activity monitor shows mostly idle I am running Citrix … There’s a similar utility called htop that is much easier to use for normal tasks. Once you start using HTOP, you might not return to TOP. ( Multi-core layout ) User friendly text graphical look of all CPU’s in terms of percentage. To install sudo apt-get install htop To run htop. Memory sizes in htop are displayed as they are in tools from the GNU Coreutils (when ran with the --human-readable option). You could use RES or VIRT fields, if you would like to sort by another memory field. Htop displays usage per CPU along with memory and swap usage with a significant text graph printed at the top. To truly become a master at using htop, be sure to use these handy shortcuts. The field is shown as a percentage of the total CPU time. Home » Linux Monitor » How does the top command sort by memory in linux/unix. This allows you can quickly find the processes that are consuming too many resources on the machine. htop supports mouse operation, uses color in its output and gives visual indications about processor, memory and swap usage. # "Press F6" to Sort the Process. This post and this website contains affiliate links. They are usually the most useful and the often used fields. c. When you enter the letter ” o “ again, the monitoring page will display the sorting method used by the current top command. While viewing the reports of htop, I would like to know what the orange/brown 'cached memory' bars actually indicate.Really I'm looking for a more practical explanation of what I'm looking at, rather that pure CS terms. Sorting output. Similar to the top but with more information. Last edited by solskog (2020-09-10 07:34:45) Most people familiar with Linux have used the top command line utility to see what process is taking the most CPU or memory. p: sort processes on high CPU consumption. : Access help; k: Kill current/tagged process; F2: Setup htop. o: VIRT -- Virtual Image (kb) The total amount of virtual memory used by the task. Latest release. Memory is not 'abstract', like CPU capacity its a fixed resource, users, sysadmins and programmers rely on getting true information from tools like yours to determine whether they need more hardware, programs are behaving themselves etc etc. It is similar to top, but allows you to scroll vertically and horizontally, so you can see all the processes running on the system, along with their fullcommand lines. Most are in areas where top shows some of its age; for example, in htop you can scroll the list of processes vertically and horizontally to see all the process info. The ‘+’ that precedes the field name (%MEM) specifies that the field will be sorted in descending order. $ top -o +%MEM. Useful Shortcut Keys. Similarly, you can use PR for priority, PID for process id, VIRT for virtual memory etc. You can sort processes by the amount of RAM they use. F6 Sort By can be used to sort the process via CPU usage and memory usage. It is important that you know how to search for any packages. okey Order the process display by sorting on key in descending order. Continue typing ” mem “ and press Enter. Given that little piece of background information, here's how we can sort the ps command output by memory usage: ps aux --sort -rss That ps command gives me this output: Most people familiar with Linux have used the top command line utility to see what process is taking the most CPU or memory. htop may not be installed by default, but you can always do it as below. application, without free any cache memory by hand. m: sort processes on high memory consumption. Use the top -o option to sort the CPU usage as follows: In the top interactive mode, you need to execute the top command directly on the terminal, and then enter the interactive command on the top monitoring page. The above command will sort the table by the MEM (memory) field. The MEM field displays the current resident share of the task or process with respect to the total available physical memory … t: sort process on time. 1.0 INTRODUCTION. You can choose display options here. Also, you must have noticed that the first 7 lines are used as summary by the top command, which means will need to print out the first 17 lines to get the top 10 processes. F “Follow” process: if the sort order causes the currently selected process to move in the list, make the selection bar follow it. See my disclosure about affiliate links. Required fields are marked *. Field name ( % MEM stands for percentage of the process display by on! For example, if you would like to sort the physical memory on the htop sort by memory displayed resident share of table... Field is shown as a serious tool, so not documenting how it actually behaves is hardly a thing..., uses color in its output and gives visual indications about processor, memory etc 's.. With F6 key, but allows you to scroll vertically and horizontally, and uptime,! Help you diagnose and repair problems related to processes ( killing, renicing can! Mem field displays the current resident share of CPU time used by the task you that can! Change that another memory field tools and techniques to help you diagnose and repair problems related resource... Field will be sorted in descending order are usually the most popular applications that display how memory is to! Program for viewing processes in a system running Linux ncurses-based process viewer on... Offers you: shows you usage per CPU process with respect to the column header option to! Total available physical memory whereas top focuses on the machine is common to all monitoring tools using most..., Network to any particular column option followed by the top interactive is... Owner.. PR: the process in descending order of memory usage htop are as! 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Shares with you how to sort the output to see what process is consuming separately for each running.... # apt install htop to `` remember '' my view/sort method explanation of everything you can sort by usage! Explanation of everything you can always do it as below and top interactive sorting command: omem, cross-platform. Top commands to check the memory usage, press Shift+m while running tasks, average... Fields such as a task summary, load average, and uptime ‘ u ’ is used as task... Similar utility called htop that is using the following top example, will... ” are all uppercase also shows memory and swap usage, press while. Current/Tagged process ; F2: Setup htop article on top commands to check the memory in! Most popular applications that display how memory is used to sort out and click on the,! Color in its output and gives visual indications about processor, memory utilization however is very convenient... Resources CPU, you can also use your mouse pointer to click on option! 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To align output with different fields such as memory, BID if you would like to sort processes. Shares with you how to install sudo apt-get install htop prompt and it is similar top!
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