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Waterfall for Tracking Any Result Over Time

, 7 Mar 2014 CPOL 3.1K 18 1
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Track usage of a value overtime

Introduction

When tracking Unix/Linux issues, we need a way to track usage via ssh/telnet sessions for sustained periods of time.

Why

Using tools like nmon, top or the like provide great overall system performance but lack longer term usage while not consistently watching screen. It is easier at times to just look at the screen to know history and status.

Usage

This is a shell script to allow waterfall status of commands that return a numeric value.

chartit @|<command> [s<seconds>] [t<title>] [m<maxchartvalue>]

BASIC METHODS:

 chartit @ - Pull from standard in and chart 
 vmstat 10 | chartit @
 * Chart every 10 secs the runlevel 

 chartit <command> 
 chartit "vmstat 10"
 * Chart every 10 secs the runlevel 

 OPTIONS:
 s# = Sets number of seconds to wait before executing again.
 (This also sets for multi command executions, not a stream)
 t<> = Sets a Title String
 m# = Sets the start max size of the chart
 f# = Field number to collect from
 k# = Number of lines to skip before charting input 

Simple Sample:

 chartit "date +\"%S\"" s5 tSECONDS m60 

Sample

SUSE linux sample collection of swap usage:

 vmstat -S M 60 | chartit @ f3 k2 m`free -m|grep "^Swap"|awk '{print($2)}'` tSWAP-USED-MB


SWAP-USED-MB Chart Size= 2047
000000000
000000000
000000000
000000000
000000000
000000000
000000000
000000000
000000000
000000000
000000000
000000000
000000000
000000000
000000000
000000000
CMax 243.00
AMax 243.00 LtAMAX=03/07/2014 08:58:33
CMin 243.00
AMin 243.00 LtAMIN=03/07/2014 08:58:33
CAvg 243.00
AAvg 225.00
LAST 243.00 Refresh-by-CMD

General Explanation of the Above

  • Title is set with t<title> and showed in top left.
  • Max value is set automatically upon collection or by m and adjusted upon higher value found. Note: Max value is the total width of the screen.
  • Waterfall Area: Latest collected value is at the top of the screen, oldest is at the bottom.
  • CMAX - or the ones starting with C are Charted (shown on screen) Max value
  • AMAX - or the ones starting with A are All time (since the command was started) Max Value
  • On the AMax and AMin, we capture the time of that sample.
  • Refresh is set by the timing of the input stream not multi run of a command.

Other MFU (Methods For Use)

#ALL UNIX/LINUX
 #Track Thread Count of a process Change <PID>
 chartit 'ps -p <PID> -o thcount -o pid -o comm' s60 tPID-Threads

#ZVM Linux
 #Watch Steal % on systems
 vmstat 60 | chartit @ f17 k3 "tCPU-STEAL `vmcp q userid`"

#LINUX 
 #Watch Free Memory
 vmstat -S M 60 | chartit @ f4 k2 m`free -m|grep "^Mem"|awk '{print($2)}'` tMEMORY-FREE-MB
 #Watch Swap Usage
 vmstat -S M 60 | chartit @ f3 k2 m`free -m|grep "^Swap"|awk '{print($2)}'` tSWAP-USED-MB

#AIX
 #Track Virtual Memory used by a process
 chartit "svmon -P PID -O unit=MB|awk '{print(\$6)}'" s60 tPID-Virtual
 #Track Paging Space used by a process
 chartit "svmon -P PID -O unit=MB|awk '{print(\$6)}'" s60 tPID-Pgsp
 #Tacke Thread Count by PID based on string in PID
 chartit 'ps -p `ps -ef | grep "<PSSTRING>" | grep -v "grep" | 
 grep "<PSMORESTRING>" | awk '"'"'{print($2)}'"'"'` -o thcount' s10 tWHAT-TITLE
 #Watch Phys CPU
 chartit "lparstat 60" tPHY-CPU k5 f5
 #Watch Swap Usage
 chartit "swap -s | awk '{print(\$7*0.00390625)}'" s60 m`swap -s | awk '{print(\$3*0.00390625)}'` tSWAP-MB 

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

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About the Author

Christopher Ayres
Systems / Hardware Administrator
United States United States
Lost of Unix/Linux Experience with Performance/Capacity twist.
Big Data Mining and script automation using simple awk/shell/php.
Strength: Rock solid logic and coding
Weakness: Few languages of mastery

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