Objective: Let us nmon to collect performance data from linux using the frequency as we need.
Step 1 - nmon installation in linux:
Search for nmon in repo:
[root@localhost ~]# yum search nmon
Loaded plugins: auto-update-debuginfo, fastestmirror
Loading mirror speeds from cached hostfile
* base: anorien.csc.warwick.ac.uk
* epel: mirrors.xtom.de
* epel-debuginfo: mirrors.xtom.de
* extras: uk.mirrors.clouvider.net
* updates: mirrors.coreix.net
============================================== N/S matched: nmon ==============================================
nmon-debuginfo.x86_64 : Debug information for package nmon
xfce4-genmon-plugin-debuginfo.x86_64 : Debug information for package xfce4-genmon-plugin
conmon.x86_64 : OCI container runtime monitor
nmon.x86_64 : Nigel's performance Monitor for Linux <<<<<<<<< this is what we need
xfce4-genmon-plugin.x86_64 : Generic monitor plugin for the Xfce panel
Name and summary matches only, use "search all" for everything.
[root@localhost ~]#
Installing nmon:
[root@localhost ~]# yum install nmon.x86_64
Loaded plugins: auto-update-debuginfo, fastestmirror
Loading mirror speeds from cached hostfile
epel/x86_64/metalink | 26 kB 00:00:00
epel-debuginfo/x86_64/metalink | 26 kB 00:00:00
* base: anorien.csc.warwick.ac.uk
* epel: mirrors.xtom.de
* epel-debuginfo: mirrors.xtom.de
* extras: mirror.freethought-internet.co.uk
* updates: mirror.bytemark.co.uk
base | 3.6 kB 00:00:00
base-debuginfo | 2.5 kB 00:00:00
epel | 4.7 kB 00:00:00
epel-debuginfo | 3.0 kB 00:00:00
extras | 2.9 kB 00:00:00
pgdg-common/7/x86_64/signature | 198 B 00:00:00
...
updates | 2.9 kB 00:00:00
(1/4): epel/x86_64/group_gz | 99 kB 00:00:00
(2/4): epel/x86_64/updateinfo | 1.0 MB 00:00:00
(3/4): epel/x86_64/primary_db | 7.0 MB 00:00:00
(4/4): epel-debuginfo/x86_64/primary_db | 901 kB 00:00:05
Resolving Dependencies
--> Running transaction check
---> Package nmon.x86_64 0:16g-3.el7 will be installed
--> Finished Dependency Resolution
Dependencies Resolved
===============================================================================================================
Package Arch Version Repository Size
===============================================================================================================
Installing:
nmon x86_64 16g-3.el7 epel 70 k
Transaction Summary
===============================================================================================================
Install 1 Package
Total download size: 70 k
Installed size: 156 k
Is this ok [y/d/N]: y
Downloading packages:
nmon-16g-3.el7.x86_64.rpm | 70 kB 00:00:05
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Installing : nmon-16g-3.el7.x86_64 1/1
Verifying : nmon-16g-3.el7.x86_64 1/1
Installed:
nmon.x86_64 0:16g-3.el7
Complete!
[root@localhost ~]#
Launch nmon:
Test launch of nmon
lnmonq16gqqqqqqqqqqqqqqqqqqqqqHostname=localhostqqqqRefresh= 2secs qqq06:46.18qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqk
x x
x ------------------------------ x
x _ __ _ __ ___ ___ _ __ For help type H or ... x
x | '_ \| '_ ` _ \ / _ \| '_ \ nmon -? - hint x
x | | | | | | | | | (_) | | | | nmon -h - full details x
x |_| |_|_| |_| |_|\___/|_| |_| x
x To stop nmon type q to Quit x
x ------------------------------ x
x x
x CentOS Linux release 7.9.2009 (Core) VERSION="7 (Core)" x
x Vendor=GenuineIntel Model=11th Gen Intel(R) Core(TM) i5-1135G7 @ 2.40GHz x
x MHz=1382.406 bogomips=2764.81 lscpu:CPU=1 Little Endian x
x ProcessorChips=1 PhyscalCores=1 Sockets=1 Cores=1 Thrds=1 x
x VirtualCPUs =1 MHz=1382 max=0 min=0 x
x x
x Use these keys to toggle statistics on/off: x
x c = CPU l = CPU Long-term - = Faster screen updates x
x C = " WideView U = Utilisation + = Slower screen updates x
x m = Memory V = Virtual memory j = File Systems x
x d = Disks n = Network . = only busy disks/procs x
x r = Resource N = NFS h = more options x
x k = Kernel t = Top-processes q = Quit x
xqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqx
x x
x x
x x
x x
x x
x x
mqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqj
Check Cpu usage:
lnmonq16gqqqqqqqqqqqqqqqqqqqqqHostname=localhostqqqqRefresh= 2secs qqq06:47.01qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqk
x CPU Utilisation qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqx
x---------------------------+-------------------------------------------------+ x
xCPU User% Sys% Wait% Idle|0 |25 |50 |75 100| x
x 1 0.0 0.0 0.0 100.0|> | x
x---------------------------+-------------------------------------------------+ x
xqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqx
x
Cpu and network togather:
lnmonq16gqqqqqq[H for help]qqqHostname=localhostqqqqRefresh= 2secs qqq06:47.10qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqk
x CPU Utilisation qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqx
x---------------------------+-------------------------------------------------+ x
xCPU User% Sys% Wait% Idle|0 |25 |50 |75 100| x
x 1 0.0 1.0 0.0 99.0|> | x
x---------------------------+-------------------------------------------------+ x
x Network I/O qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqx
xI/F Name Recv=KB/s Trans=KB/s packin packout insize outsize Peak->Recv Trans x
x enp0s3 0.2 4.4 2.0 3.5 98.5 1284.6 1.0 13.9 x
x lo 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 x
x Network Error Counters qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqx
xI/F Name iErrors iDrop iOverrun iFrame oErrors oDrop oOverrun oCarrier oColls x
x enp0s3 0 0 0 0 0 0 0 0 0 x
x lo 0 0 0 0 0 0 0 0 0 x
xqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqx
x
Now let us schedule nmon in cron to collect data every 10 secs for 360 times, which means 1hr:
59 * * * * cd /pgBACKUP/nmondata && nmon -f -tT -s10 -c360 1>/dev/null 2>&1
Resultant files are:
-rw-r--r--. 1 root root 112123 Dec 29 18:13 localhost_221229_1759.nmon
-rw-r--r--. 1 root root 335301 Dec 29 18:13 localhost_221229_1659.nmon
[root@localhost nmondata]# head localhost_221229_1759.nmon
AAA,progname,nmon
AAA,command,nmon -f -tT -s10 -c360
AAA,version,16g
AAA,disks_per_line,150
AAA,max_disks,256,set by -d option
AAA,disks,14,
AAA,host,localhost
AAA,user,root
AAA,OS,Linux,3.10.0-1160.6.1.el7.x86_64,#1 SMP Tue Nov 17 13:59:11 UTC 2020,x86_64
AAA,runname,localhost
[root@localhost nmondata]#
Also notice the next nmon sampler is running from cron... there is one nmon at any time; as per our setup. After 1hr the existing nmon will die and the next nmon will kick off.
[root@localhost nmondata]# ps -ef|grep -i nmon
root 6276 1 0 17:59 ? 00:00:01 nmon -f -tT -s10 -c360
root 7710 1770 0 18:22 pts/0 00:00:00 grep --color=auto -i nmon
[root@localhost nmondata]#
Now let us look how we can host this as a webpage...
Directory structure:
Nmon data loc: /pgBACKUP/nmondata
nmonchart bin: /pgBACKUP/nmonchartbin/nmonchart
nmonchart dest: /pgBACKUP/nmondata/nmonchartop
So we need to use nmonchart to push the output charts over to the dest location...
Prereqs: You need ksh
[root@localhost nmondata]# ksh
# pwd
/pgBACKUP/nmondata
#
/pgBACKUP/nmonchartbin/nmonchart localhost_221229_1659.nmon ./nmonchartop/localhost_221229_1659.html
Actual:
# /pgBACKUP/nmonchartbin/nmonchart localhost_221229_1659.nmon ./nmonchartop/localhost_221229_1659.html
#
[root@localhost nmondata]# cd nmonchartop/
[root@localhost nmonchartop]# ls -altr
total 448
drwxr-xr-x. 3 root root 193 Dec 29 18:13 ..
drwxr-xr-x. 2 root root 40 Dec 29 18:26 .
-rw-r--r--. 1 root root 457432 Dec 29 18:26 localhost_221229_1659.html
[root@localhost nmonchartop]# pwd
/pgBACKUP/nmondata/nmonchartop
[root@localhost nmonchartop]#
So the html output is available here. We just need to host it.
Let us try to use simple solution like python.
>>>next blog>>>
