8/7/2023 0 Comments Check cpu memory usage linux![]() Or it would be for finding the overall memory usage of a server. Sometimes it would be for debugging a newly created application. At times we need to monitor the memory usage. And the memory requirement varies from process to process. That means if you have a shared server with overload, the website on that server will load slowly normally. 25 Answers Sorted by: 366 I do not know of a direct equivalent, but lshw should give you the info you want, try: sudo lshw -C display (it also works without sudo but the info may be less complete/accurate) You can also install the package lshw-gtk to get a GUI. Overview Any process running in our machine requires memory. I want to get the CPU and memory usage of a single process on Linux - I know the PID. High load on the server cause performance degrade. ![]() In a Linux server/system we can check the load by different ways. This is a necessary thing to check the load-average on your server for its better and stable performance. Load monitoring in Linux servers – top, w and uptime commands’ usage for checking the load on server How to show process usage for single user with TOP command This file is used by the free, top, ps, and other system information commands. Top command usages and examples in Unix/Linux The simplest way to check the RAM memory usage is to display the contents of the /proc/meminfo virtual file. ![]() Just check the CPU column to see how much processing power is used by each app. To see what type of processor/CPU your computer system has, use this Linux command: cat /proc/cpuinfo. PS command usage with example (Unix/Linux) Also, you can use the top command-line tool to check the CPU usage. Must try this and comment your suggestions. You can use the grep command to separate users. To list top 10 Memory consuming processes with user # watch "ps -e -o pmem,pid,user,args|sort -k1 -nr|head -10" To list top 10 CPU usage processes with user # watch "ps -e -o pcpu,pid,user,args|sort -k1 -nr|head -10" At first, the CPU-related statistics (the us, sy, and id fields). You can refer this “ How to show process usage for single user with TOP command” for more details. Here we have used the command vmstat 1 10 to sample the system every second for ten times. To show the process usage of a user with ‘top’ # top -u $username To get a dynamic result you must use the ‘ top‘ command instead of ‘ps’ or use the ‘ watch‘ command along with the ‘ps’. Or # ps -e -o pid,user,args|grep $username To list top 10 Memory consuming processes with user # ps -e -o pmem,pid,user,args|sort -k1 -nr|head -10įind out the top 10 memory consuming process # ps -auxf|sort -nr -k4|head -10įind out every process running under a user # ps -U user-name -u user-name u □ To list top 10 CPU usage processes with user # ps -e -o pcpu,pid,user,args|sort -k1 -nr|head -10įind out top 10 CPU consuming process # ps -auxf|sort -nr -k3|head -10 ![]() It’s simply a static output of current resource usage in the server. You can use the grep command to separate users. Your older Ubuntu version might have cgroups v1, in which case the paths differ - have a look at the docs for that: for cgroups in general, for cgroup v1 memory controller.“ ps command” and “ top command” have a lot of options, here I am explaining some useful command combinations to find the resource(cpu, memory…) usages of users in the server. You can also differentiate between system and user (my current graphical session on my laptop, where I write this, would be in user) by using /sys/fs/cgroup/system.slice/memory.stat/. It doesnt give updates like htop but it is a pretty decent way to monitor GPU Memory consumption. sys/fs/cgroup/system.slice/rvice/memory.stat, giving you the memory for everything in rvice (the process for this service and everything started by that). If you want that per systemd service, you can use e.g. The most interesting one for you is memory.stat, from which the first line anon $someNumber is probably the most interesting value (giving you bytes of memory in use that are not backed by files and thus cannot be removed from memory anywhere else than swap). In this setup, the metrics systemd_process_resident_memory_bytes, systemd_process_virtual_memory_bytes and systemd_process_virtual_memory_max_bytes would probably be the interesting ones.Ĭgroups (all of this depending on v2) have a file system under /sys/fs/cgroup in which you can query a lot of information. Based on the answer by Halfgaar, doing the simple hacky way but without systemd status | grep somethingįirst I would strongly advise using a monitoring solution of some kind - installing Prometheus systemd-exporter should be quite easy and running Prometheus on any other machine to retrieve the stats should be to - could even be on a device at home/corp for just as long as you debug this issue.
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