lsof

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I need to download a file to a given location on a non-local machine. This is the normal flow of the web browser for which I would do this: Go to website Click button to download file (it is a form that generates the file, it is not a download link) The website prompts an alert window "Do you want to download this file?", etc. I want to be able to bypass the file and do something like: >>> path_to_download_path = PATH >>> button = driver.find_element_by_css("...") >>> button.click() --> And the file is automatically downloaded to my PATH (or

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have a Java process/app. When I run /usr/sbin/lsof -p on that java process, I see a lot of "can't identify protocol". Also, interestingly, File descriptors(FDs) are increasing at a very steady rate. And those FDs that are being created are having description as "can't identify protocol". So, is there any way to instrument/profile the java process so as to nail down who is creating that many FDs. Any detailed explanation on any tool would be really really helpful. A quick google search tells me strace is one way but IIUC, that will show

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have a Java process/app. When I run /usr/sbin/lsof -p on that java process, I see a lot of "can't identify protocol". Also, interestingly, File descriptors(FDs) are increasing at a very steady rate. And those FDs that are being created are having description as "can't identify protocol". So, is there any way to instrument/profile the java process so as to nail down who is creating that many FDs. Any detailed explanation on any tool would be really really helpful. A quick google search tells me strace is one way but IIUC, that will show

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I've a process which is using too much memory. When I run lsof -p <pid> the output is : ETL-GRIB 5981 root DEL REG 8,4 183633075 /tmp/icom/65516_GRIB/20150921220023_6796_YTXG23EGRR211800__ln_3857.shp ETL-GRIB 5981 root DEL REG 8,4 183633059 /tmp/icom/65516_GRIB/20150921220023_6796_YTXG23EGRR211800__pl_3857.shp ... What DEL mean? It could be that the process has the file in memory but It has been deleted by any other process? 回答1: lsof usually reports entries from the Linux /proc/<PID>/maps file with mem in the TYPE column. However, when lsof

查看所有进程的文件打开数 lsof |wc -l 查看某个进程打开的文件数 lsof -p pid |wc -l 查看和修改linux系统打开文件数设置方法 转载于:https://my.oschina.net/u/2613449/blog/603138 来源：51CTO 作者： choukuad381324 链接：https://blog.csdn.net/choukuad381324/article/details/100945572

lsof 全名list open files，也就是列举系统中已经被打开的文件 查看固定端口被哪个进程占用 lsof -i:5000 查看5000端口的占用情况 来源：博客园 作者： 艺术就是π大星 链接：https://www.cnblogs.com/0916m/p/11484566.html

I have a Java application running on Linux with PID 25426. When running lsof -p 25426 , I noticed: java 25426 uid 420w FIFO 0,8 0t0 273664482 pipe java 25426 uid 421r FIFO 0,8 0t0 273664483 pipe java 25426 uid 461r FIFO 0,8 0t0 273622888 pipe java 25426 uid 463w FIFO 0,8 0t0 273633139 pipe java 25426 uid 464r FIFO 0,8 0t0 273633140 pipe java 25426 uid 465r FIFO 0,8 0t0 273622889 pipe java 25426 uid 471w FIFO 0,8 0t0 273623682 pipe java 25426 uid 472r FIFO 0,8 0t0 273633141 pipe How should this result be interpreted? I am troubleshooting an issue with too many open files and trying to

列出所有网络连接 #lsof -i lsof的-i选项可以列出所有打开了网络套接字（TCP和UDP）的进程。 列出所有TCP网络连接 #lsof -i tcp 也可以为-i选项加上参数，比如tcp，tcp选项会强制lsof只列出打开TCP sockets的进程。 列出所有UDP网络连接 #lsof -i udp 同样udp让lsof只列出使用UDP socket的进程。 找到使用某个端口的进程 #lsof -i :25 :25和-i选项组合可以让lsof列出占用TCP或UDP的25端口的进程。 文章来源: https://blog.csdn.net/jeromezmzx007/article/details/90701112

1、lsof -i:端口号 2、netstat -tunlp|grep 端口号 都可以查看指定端口被哪个进程占用的情况 【步骤一】lsof -i lsof -i 用以显示符合条件的进程情况，lsof(list open files)是一个列出当前系统打开文件的工具。 以root用户来执行lsof -i命令 ，如下图 【步骤二】lsof -i:端口号 lsof -i:端口号，用于查看某一端口的占用情况，比如查看22号端口使用情况，lsof -i:22，如下图 【步骤三】netstat -tunlp netstat -tunlp用于显示tcp，udp的端口和进程等相关情况，如下图 【步骤四】netstat -tunlp|grep 端口号 netstat -tunlp|grep 端口号，用于查看指定端口号的进程情况，如查看22端口的情况，netstat -tunlp|grep 22，如下图 来源：博客园 作者： 梦----------凡 链接：https://www.cnblogs.com/accpguoliang/p/11421633.html

1. 什么是linux服务器load average？ Load是用来度量服务器工作量的大小，即计算机cpu任务执行队列的长度，值越大，表明包括正在运行和待运行的进程数越多。 参考资料： http://en.wikipedia.org/wiki/Load_average 2. 如何查看linux服务器负载 可以通过w，top，uptime，procinfo命令，也可以通过/proc/loadavg文件查看。 3. 服务器负载高怎么办？ 服务器负载（load/load average）是根据进程队列的长度来显示的。 当服务器出现负载高的现象时（建议以15分钟平均值为参考），可能是由于CPU资源不足，I/O读写瓶颈，内存资源不足等原因造成，也可能是由于CPU正在进行密集型计算。 建议使用vmstat -x，iostat，top命令判断负载过高的原因，然后找到具体占用大量资源的进程进行优化处理。 4. 如何查看服务器内存使用率？ 可以通过free，top（执行后可通过shitf+m对内存排序），vmstat，procinfo命令，也可以通过/proc/meminfo文件查看。 5. 如何查看单个进程占用的内存大小？ 可以使用top -p PID，pmap -x PID，ps aux|grep PID命令，也可以通过/proc/$process_id（进程的PID）/status文件查看