Linux top source code

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parser for linux top command

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sweetim/linux-top-parser

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README.md

this package will parse the output from the linux top command into JSON object

it supports any number of columns and fields

there are 2 ways to use this package

const  parseTopInfo, topInfoTransform > = require("linux-top-parser"); // normal string parsing const topInfo = parseTopInfo(TOP_INFO_STRING); // or using transform stream createReadStream(TOP_FILE_PATH) .pipe(topInfoTransform( stringify: true >)) .pipe(process.stdout)

There are 2 code examples shown in the example folder on how to use this package

the CLI can be pipe from the output of top command

top -b | npx linux-top-parser 

or you can use the JSON processor CLI ( jq ) to process the stream

top -b | npx linux-top-parser | jq ".[0].summaryDisplay" 

linux-top-parser [options] Options: -V, --version output the version number -s, --summary output summary display only (default: false) -p, --prettify output top info with indentation and color (default: false) -f, --filter output process that has > 0% of CPU usage only (default: false) -h, --help display help for command 

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This program generate graphs from the linux TOP command log file.

kaushikvelusamy/linux-top-parser-graph-maker

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README.md

This program generate graphs from the linux TOP command log file.

This program was written on IBM Power 8 S822LC Minsky Machine running Ubuntu 16.04.

This program is written in python 3.

This program requires Pandas and MatplotLib packages

To Generate the TOP log files

If you want to collect the TOP logs for a particular processID

 top -p 140432 -b -d 60 > toplogs_sample.log 

-p processID -d timeinterval ( collect every 60 seconds here ) -b batch mode

You should have only one processID in your log file.

Your log file should look like this

top - 21:35:21 up 50 days, 4:00, 11 users, load average: 11.32, 5.13, 2.93 Tasks: 1 total, 1 running, 0 sleeping, 0 stopped, 0 zombie %Cpu(s): 0.5 us, 0.4 sy, 0.0 ni, 98.9 id, 0.2 wa, 0.0 hi, 0.0 si, 0.0 st KiB Mem : 10715027+total, 17605536+free, 9269312 used, 88617804+buff/cache KiB Swap: 3000256 total, 2461376 free, 538880 used. 10568942+avail Mem PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 61447 root 20 0 2472704 1.338g 3712 R 1880 0.1 12:34.14 kv_fileload top - 21:35:51 up 50 days, 4:00, 11 users, load average: 14.61, 6.53, 3.47 Tasks: 1 total, 1 running, 0 sleeping, 0 stopped, 0 zombie %Cpu(s): 10.1 us, 1.3 sy, 0.0 ni, 88.3 id, 0.3 wa, 0.0 hi, 0.0 si, 0.0 st KiB Mem : 10715027+total, 17559014+free, 9734336 used, 88617824+buff/cache KiB Swap: 3000256 total, 2461376 free, 538880 used. 10564290+avail Mem PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 61447 root 20 0 2491904 1.781g 3712 R 1624 0.2 20:41.87 kv_fileload . . . 

Copy the program and the log file to a new Folder and Run

 python3 read_logs.py -f toplogs_sample.log -p 61447 -n kv_fileload 

The Output Files Look Like Below

Quick Reference for understanding the TOP ouput

About

This program generate graphs from the linux TOP command log file.

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adougher/Linux_top

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Readme.txt

Andrew Dougherty CSCI 442, Spring 2014 Project 2 sysinfo.h: This is the header file for the system information gathering functionality. sysinfo.cpp: This file contains the implementation for the system information gathering functionality. It includes methods for retrieving information about the uptime, memory and processes from the proc file system. sysinfo_tests.cpp: This file contains unit tests for the sysinfo functionality. top_functions.h: This is the header file for the top helper functions and a struct which is essentially an expanded process. top_functions.cpp: This file contains the implementation for the top helper functions. It includes an methods for retrieving a process from a vector given a pid, a method for converting number of pages to bytes, a method for parsing valid options, a method for getting the current clock time, a method to calculate the current percent user time, system time and idle time for each CPU and for the system, given a propery sized blank array, a method to populate a vector of the process like data structures mentioned above, a method to sort such a vector given a valid sort key and a method to get the total runtime for a process in the format HH:MM:SS.CC ******************************************************* The optimal terminal size is about half the monitor. I spent about 12-14 hours total on this project. ******************************************************* ******************************************************* Extra Credit Features: My top displays the current time, the number of users including system users, the swap memory info and the the user associated with each process. ******************************************************* ****EDIT: This error has been fixed now**** It must be noted that on rare occasion, my top crashes due to a string.substr( ) method invalid read error. Sometimes it can run for an hour without incident, sometimes only for a minute. I've deduced using valgrind that it originates from somewhere in the get_process( ) method, but it does not always occur. I coded the method using stl strings for parsing instead of fscanf, which seems to be a more robust and elegant solution. Please don't dock me for too much points. o) (That's Ermal the Cyclops) ****EDIT: This error has been fixed now****

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