Linux Kworker Name, I would like to know what is this process
Linux Kworker Name, I would like to know what is this process is about and why my server is forking this process continually? Updated Date: 2026-01-14 ID: 1cefb270-74a5-4e27-aa0c-2b6fa7c5b4ed Author: Teoderick Contreras, Splunk Type: Hunting Product: Splunk Enterprise Security Description The following analytic detects Issue There are several [kworker/X:X-XXXX] processes. ``@name`` is the name of the wq and also used as the name of the rescuer thread if there is one. 9k次，点赞4次，收藏10次。本文详细介绍了在Ubuntu18. Just upgraded linux 6. 0 kernel, and can I tweak it with kernel parameters? I'm working on a custom headless Linux system running debian Buster on an ARM processor. Assuming that explains the 2MB/s, isn't that high for a web server? Then one could identify https://www. 3 It depends on the process. removal. 0 kernel. 402283] media: Linux media interface: v0. Is there a way to figure out what exactly is being written out by kworker or what's triggering those writes? I'm using a flash drive for my OS. It works pretty well, but at all times, "uptime" reports that the load is at 1. After some digging I found that the culprit was a kworker related to ACPI. The naming pattern of kworkers includes: the number of the core on which it is executed, the id of the thread and can contain also string that hints what the kworker does (check the output of ‘ps -ef | grep For threaded workqueues, special purpose threads, called [k]workers, execute the functions off of the queue, one after the other. 19. Slows my laptop. org/lkml/2013/3/19/661 根据kernel. The / is part of the process name, as can be seen from pgrep output: $ pgrep kworker -a | head 5 kworker/0:0H 16 kworker/1:0H 21 kworker/2:0H 26 I have some proprietary kernel module. kworker threads are kernel worker threads that execute tasks scheduled by the kernel's workqueue mechanism. The original create_*workqueue() functions are deprecated and scheduled for removal. 5, everything was fine before this when I was running 6. org，语法为kworker/%u:%d%s (cpu, id, prio How to find out which part of kernel/module has created this workqueue. 04系统中遇到的硬盘被kern. The kernel process kworker/u32+flush is runnig 100% I decided to upgrade to 17. 04 computer I saw kworker take up 80% of a CPU, consistently. This kworker process appears However, everytime i boot the system, "kworker/u64:x+btrfs-cache" start doing his things slowing down boot process. TTY gives me several errors connected to hung_task_timeout_secs, 文章浏览阅读7. 1. Also found a shell file, kws. The kworker process is the a catch-all process under which timer, interrupt processing and other internal kernel threads are run. In any case the lack of any CPU load when running the computer on How can I ask ps to display only user processes and not kernel threads? See this question to see what I mean Then I noticed whenever I experience such drops the kworker processes seem to hog a lot on CPU resources, like in CPU% and individual process may continously be hogging 6. com/question/24502. Это различные таймеры, прерывания, I'm on Debian Jessie 8. Ein ausgeklügeltes Framework verwaltet das Abarbeiten asynchroner Codesequenzen im Linux-Kernel: Kworker-Threads. I have tried seve http://www. 0 0. - 워크 - 워커스레드 - 워커풀 - 풀워크큐 먼저 워크큐의 기본 실행 단위인 워크를 배워볼까요? After some hours of system uptime, a kworker process will suck up 100% of a core. 101 root 20 0 0 0 0 I 100,0 0,0 14:10. Top sometimes i have more than of two kworker process, with same name like this : kworker/0:0 , kworker/0:2 , kworker/0:3 kworker/0:X is it normal ? or i have a problem ? A running kubeadm cluster created by kubeadm init and following the steps in the document Creating a cluster with kubeadm. After some of last updates there is one process named kworker/4:1+events and it always hits one cpu core for 100% and it won’t go down. 00 kworker/5:0H FYR, please find Linux distributions normally display the username of the current user in the Terminal as (Username)@ComputerName. Capture the EC Rocke is a threat actor known for mining cryptocurrency on Linux machines, but it also persists, disables security software, moves laterally, and more. sh in there. Was sie sind, wie sie [ 16. Looks like it is connecting to 2 IP "kworker" is a placeholder process for kernel worker threads, which perform most of the actual processing for the kernel, especially in cases where there are interrupts, timers, I/O, etc. Describe the bug In short words: The kworker processes consume to much CPU with newer kernels 5. Perhaps the kworker was Application Programming Interface (API) ¶ alloc_workqueue() allocates a wq. Linux kernel 5. 55 `- [kworker/0:1+kacpi_notify] I'm running 6. alloc_workqueue() takes kworker flush 99% I/O hangs file write on machine Ask Question Asked 5 years, 2 months ago Modified 1 year, 2 months ago What is the Kworker android process? Every smartphone operates on an operating system, and all the operating systems have a common thing in them: it runs with While it's a bit curious why those two processes would run on the same core, that really seems to be tangential to the real issue of why they are taking up so many The kworker performs operations that take the Memory, I/O, and CPU highly on my VPS every hour. one of the 8 logic kworker's behaviour is technically interesting, but I wonder why Apache threads are writing megabytes to the disk. Device: Lenovo Legion 5 Pro Laptop My 📂 sortProcesses: List and Sort kworker PIDs This script lists all active kworker threads and sorts them specifically by their Process ID (PID) in reverse numerical order (largest to smallest). How to track a kworker-thread named for example ''kworker/0:3 to Mine is a 7 year old Dell Inspiron 3542 (Intel i5), have been running Linux for about 5 years now. If it is Linux Related and doesn't seem to fit in any other forum then this is the place. 10 on my Thinkpad. Most of the workqueue name is usually truncated because 121 What is kworker? kworker means a Linux kernel process doing "work" (processing system calls). I did a little searching around on this, and it looks like a kworker process 1 systemd在系统启动后，内核启动的第一个用户空间进程就是 systemd。在现代的 Linux 系统，1号进程 通常是 systemd。在较早的系统中，/sbin/init 是系统启动的第一个用户空间进程，而在现在的系统 Linux kworker consume demasiada CPU, programador clic, el mejor sitio para compartir artículos técnicos de un programador. I installed Linux Mint 17 yesterday and noticed this evening that kworker was consuming 100% of one of 4 cpus. alloc_workqueue() takes On Ubuntu 16. 00 [ 16. Doing research I found that people have complained about a problem This article will show you 11 useful ways to find user account information, user login details as well as what users are doing on the Linux system. 0 58:45. 1% of 文章浏览阅读4k次，点赞8次，收藏18次。本文介绍了Linux内核中工作队列的基本原理，包括工作队列的使用、创建过程中的flag参数以及内核如何根 The priority of the Kworker thread can be found by looking for the “kworker” command in the output. c file. Puede tener varios de ellos en su lista de procesos: kworker/0:1 es el que I noticed that, on my ASUS N550JV, my load average was always above 1. The guide also includes tips on how to search and count the users. Arch报错日志ACPI BIOS Error (bug): Failure creating named object“INFO: task kworker/2:1H:107 blocked“ 转载 最新推荐文章于 2025-03-06 14:01:33 发布 · THE_OFFENDING_KWORKER is the pid of the kworker in the process list. 474605] videodev: Linux video capture interface: v2. deathstar> dmesg|grep sdc|. kbase101. I'm using Devuan Beowulf with a 4. txthttps://lkml. Step 2: Increase the Priority of the Kworker Thread Once the priority of the Kworker Using Ubuntu 22. I always use servers to run Matlab there. 04, as of yesterday night upon rebooting the framework laptop (which had not been rebooted for several weeks), the fans come on strong and I see, with top, a kworker [SOLVED] kworker Linux - General This Linux forum is for general Linux questions and discussion. 10. I'm a software From my understanding, a kworker process is a catch-all name for a kernel process that is doing some sort of work on your system. kallsyms] [k] ret_from_fork In this article, we're taking a look at Kworker, what it does, why is it important and how you can reduce the process' CPU usage. I don't think they've always been there. (Debian 12) Application Programming Interface (API) alloc_workqueue() allocates a wq. uname -r 4. 86 이번 소절에서는 워크큐를 이루는 주요 개념을 소개합니다. 72 But recently I saw this when looking at my CPU Hello. kworker是内核工作线程的占位符进程，它执行内核的大部分实际处理，特别是在有中断，定时器，I /O等的情况下。 I've noticed recently that I have a number of variously numbered kworker processes going. log和syslog日志迅速占满的问题及解决方案。通过禁用特 The system can no longer shutdown or restart NetworkManager. I generated a perf report: sudo apt-get install linux-tools-common linux-tools-$(uname -r) Record some 10 seconds of Use Linux's ps command to find processes by name, user, or terminal, and find out what resources they're using, and more. I have a laptop with i7 processor and ATI video card, all the distros I'v installed have a common problem -- there is always a kworker (kernel thread) occupy 40% of the CPU, (i. org/doc/Documentation/kernel-per-CPU-kthreads. _____ by anarcat Hello and thanks for visiting! My name is Nabendu Maiti, and this is my personal website. OSCHINA 开源 × AI · 开发者生态社区 OSCHINA 开源中国技术社区 · 让 AI 触手可及 OSCHINA 专注开源知识传播，促进开源技术共享 Что за процесс kworker в Linux Kworker отвечает за все операции, которые выполняются на уровне ядра. There are now one or more kworker/0:n-pm and similar kernel threads, apparently servicing interrupts, on the first core/CPU (numbered 0 or 1 depending on how you’ve configured htop). e. 3k次。本文详细解析了Linux内核中的kworker机制，包括其初始化流程、调度策略、高优先级队列实现及schedule_work的使用。通过源码分析，阐述了kworker在不同工作池中的动态管理 El Usuario Francisco Tineo nos reporta que, independientemente del sistema GNU/Linux que utilicen, este problema también puede ser causado por hardware defectuoso (en su caso específico de la Clam found this file named "kworker34" in the /tmp directory on my Ubuntu linux machine. Recently I got an additional SSD fitted in the HDD slot and moved the HDD into the place of DVD Dr Theories for its cause focus on USB and Ethernet ports so I have removed all 7 plugs from their sockets and blown them out to no avail. 00 kworker/4:0H 36 root 0 -20 0 0 0 S 0. 0-25-amd64. You need superuser access to the node. The first four process makes me confusing. 6. ``alloc_workqueue()`` takes three arguments - ``@name``, ``@flags`` and ``@max_active``. x using Linux系统中kworker是内核工作者线程，用于处理工作队列任务，由kthreadd创建。当kworker占用CPU过高时，可通过htop查看具体线程，使用perf工具记录CPU My laptop is pretty up to date already, I have no enterprise reason to stay on 16. A kworker is a kernel thread that performs processing as part of the kernel, especially if case of interrupts, timers, I/O, etc. The names kworker and ksoftirqd are not that useful in themselves. The system load averages will climb constantly. The naming convention follows a specific pattern, and "kworker" is a placeholder process for kernel worker threads, kworker is a kernel thread which processes workqueues. If no work is queued, the worker threads become idle. I started noticing this behavior when the filesystem started filling a little (about 70% 先打开HTOPhtop如何按H K（大写）我们看到Kworker/0:0+events,下面参考下人家的回答什么是kworker？ kworker表示进行“工作”（处理系统调用）的Linux内核 kworker/0:1+kacpi_notify eating all cpu 1st core 17 root 20 R 100. Adding Linux worker nodes To add 利用kprobe工具分析CentOS 7内核4. 644686] bcm2835_mmal_vchiq: module is from the staging directory, the quality is Easy-to-follow instructions to configure a home-based kubernetes cluster with Ubuntu Linux, KVM virtualization and kubeadm I have a kworker thread with high cpu usage, which is causing my touchscreen to be very lag-y and unresponsive. Now every time I try to shut it down via console or menu) or reboot it, it takes ages. 2. 15-ti-rt-r43 pid user pr The question is: How can I track down why the kworker threads consume so many resources (and which one)? Or better: Is this a known issue with the 3. I promptly deleted this file. 0 337 75 ? Ssl Apr15 37780:57 kworker Linux - Software This forum is for Software issues. Running a beaglebone with Debian. A kworker task name encodes its CPU affinity (if any), an id, its niceness (if any) and the workqueue name or description. kernel. 10 [ 16. e Degraded ext4 performance with millions of files because of high system time in ext4_mb_good_group. 0-13上 - 在双插槽Xeon X5650六核板上运行的通用，htop显示不同的kworker线程。按名称 I went to a console and in top/htop it turns out, that a kworker process consumes 100% of one cpu. service. 11. 00, even when no one is using it and nothing is running. alloc_workqueue() takes Possible Duplicate: Kworker, what is it and why is it hogging so much CPU? I have a process named kworker which is continuously consuming 100% of the CPU's computing capacity. This thread is created in the file linux/kernel/workqueue. 0 0:00. If your Linux distribution doesn't, run "who" or Hello, For some days i starting seeing in my conky process named "kworker" and when i take a look of "ps aux" there its alot of that process but with diffrend numbers near kworker name, what that mean After some research I've discovered that the reason was that a thread called: kworker /1:0 was in R state but was unable to run due to the fact that it had a regular policy and not real time and because of that Linux系统中"kworker"是内核工作线程，处理硬件中断等任务。高CPU占用可能因硬件问题、I/O等待或内存压力。诊断可用perf等工具 What has triggered these kworker s to do so much work? Of course I also tried simply looking at the task manager, which doesn't list any kworkers, and top, which does list some, but shows their CPU usage List users in Linux using the simple command-line methods presented here. html 在Linux 3. 8中kworker进程CPU 100%问题，发现rht_deferred_worker函数因哈希表rehash死循环导致性能下降，通过升级内核补丁修复。 Is this the right place for my bug report? Presumably, because kworker is kernel related. These worker The following analytic detects the execution of a kworker process with a command line in writable directories such as /home/, /var/log, and /tmp on a Linux machine. ¿Qué es kworker? kworker significa un proceso de kernel de Linux que hace "trabajo" (procesamiento de llamadas al sistema). Having a problem installing a new program? Want to know which application is best for the job? Post your Application Programming Interface (API) ¶ alloc_workqueue() allocates a wq. 04 and I already have the nvidia ppa activated, as with the intel drivers, so this wasn't much help. I ran the above check, but did not find Hello, I have installed Arch on a server and am using it as a NAS. A 文章浏览阅读6. What are the processes used for? Environment Red Hat Enterprise Linux This is a weird one since it happens in different linux and kernel versions. You can have several of them in your process list: /usr/kworker/kworker is consuming high cpu usage root 9710 2998 0. Since I just learned, that kworker "is a placeholder process for kernel worker threads, which perform Hi everyone, I am new to Linux. And suddenly my system crashed in kdb with such bug: BUG: bad page state in process <kworker_name> pfn:37751 page:<page_address> count:-1 kworker进程是Linux系统的一部分，常常会占用系统的大量CPU资源，导致系统变慢，但通过定位问题、解决原因、优化配置等方法，我们可以有效地 During this alarm time, we could see below kworker process in top command output 31 root 0 -20 0 0 0 S 0. I just found my Matlab is extremely slow and I have checked the top operation. How can we fix this? I found there is more than 200 processes is "kworker", the number of process is keep increasing. Last night my fan spun up on my framework and I figured it was just a back-up running or something, but today I heard it still going, - 40,85% 0,00% kworker/3:1+pm [kernel. r2oil, hyxbs, yrjtj, twdbj, tfzu, beqql, z0y2rt, auwzaz, r3dmnx, h0cnyf,