From d675e982b31faa8e48135ab58931502ba44c0ce4 Mon Sep 17 00:00:00 2001 From: struggling <630441839@qq.com> Date: Tue, 18 Aug 2015 00:55:00 +0800 Subject: [PATCH] Delete 20150817 Linux FAQs with Answers--How to count the number of threads in a process on Linux.md --- ...number of threads in a process on Linux.md | 51 ------------------- 1 file changed, 51 deletions(-) delete mode 100644 sources/tech/20150817 Linux FAQs with Answers--How to count the number of threads in a process on Linux.md diff --git a/sources/tech/20150817 Linux FAQs with Answers--How to count the number of threads in a process on Linux.md b/sources/tech/20150817 Linux FAQs with Answers--How to count the number of threads in a process on Linux.md deleted file mode 100644 index 35ee2f00de..0000000000 --- a/sources/tech/20150817 Linux FAQs with Answers--How to count the number of threads in a process on Linux.md +++ /dev/null @@ -1,51 +0,0 @@ -translation by strugglingyouth -Linux FAQs with Answers--How to count the number of threads in a process on Linux -================================================================================ -> **Question**: I have an application running, which forks a number of threads at run-time. I want to know how many threads are actively running in the program. What is the easiest way to check the thread count of a process on Linux? - -If you want to see the number of threads per process in Linux environments, there are several ways to do it. - -### Method One: /proc ### - -The proc pseudo filesystem, which resides in /proc directory, is the easiest way to see the thread count of any active process. The /proc directory exports in the form of readable text files a wealth of information related to existing processes and system hardware such as CPU, interrupts, memory, disk, etc. - - $ cat /proc//status - -The above command will show detailed information about the process with , which includes process state (e.g., sleeping, running), parent PID, UID, GID, the number of file descriptors used, and the number of context switches. The output also indicates **the total number of threads created in a process** as follows. - - Threads: - -For example, to check the thread count of a process with PID 20571: - - $ cat /proc/20571/status - -![](https://farm6.staticflickr.com/5649/20341236279_f4a4d809d2_b.jpg) - -The output indicates that the process has 28 threads in it. - -Alternatively, you could simply count the number of directories found in /proc//task, as shown below. - - $ ls /proc//task | wc - -This is because, for every thread created within a process, there is a corresponding directory created in /proc//task, named with its thread ID. Thus the total number of directories in /proc//task represents the number of threads in the process. - -### Method Two: ps ### - -If you are an avid user of the versatile ps command, this command can also show you individual threads of a process (with "H" option). The following command will print the thread count of a process. The "h" option is needed to hide the header in the top output. - - $ ps hH p | wc -l - -If you want to monitor the hardware resources (CPU & memory) consumed by different threads of a process, refer to [this tutorial][1].(注：此文我们翻译过) - --------------------------------------------------------------------------------- - -via: http://ask.xmodulo.com/number-of-threads-process-linux.html - -作者：[Dan Nanni][a] -译者：[译者ID](https://github.com/译者ID) -校对：[校对者ID](https://github.com/校对者ID) - -本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创翻译，[Linux中国](https://linux.cn/) 荣誉推出 - -[a]:http://ask.xmodulo.com/author/nanni -[1]:http://ask.xmodulo.com/view-threads-process-linux.html