I have confirmed 100% the source of the these spikes were very aggressive, rogue, unidentified bots originating on Chinese networks. After blocking the resident networks of these bots, all spikes have stopped, completely.
This is a "huge success story", going from unknown, uncorrelated performance hits / spikes due to nearly random spikes in performance to cause identification and total resolution. As you can see from the graph over the last 24 hours, there have been zero spikes.
I will keep the same MQTT and Node-RED instrumentation in place (which I am very pleased with) and will also keep all "spike trapping" instrumentation and DB logging in place, so if other spikes appear, which I am fairly confident more of these "pesky" bots will appear sooner or later, I will trap them, identify the source and block their resident networks.
Success!
MQTT and Node-RED did not "solve the problem". MQTT and Node-RED provided a very powerful and flexible way for me to quickly instrument custom sensors and logging, which helped me identify the problem.
I highly, recommend MQTT and Node-RED. These tools are free. Thank you very much MQTT and Node-RED developers!
we have an unix system which has
load average normally about 20.
but while i am running a particular unix batch which performs heavy
operations on filesystem and database average load
reduces to 15.
how can we explain this situation?
while running that batch idle cpu time is about %60-65... (0 Replies)
Hello all, I have a question about load averages.
I've read the man pages for the uptime and w command for two or three different flavors of Unix (Red Hat, Tru64, Solaris). All of them agree that in the output of the 2 aforementioned commands, you are given the load average for the box, but... (3 Replies)
Hello, Here is the output of top command. My understanding here is,
the load average 0.03 in last 1 min, 0.02 is in last 5 min, 0.00 is in last 15 min.
By seeing this load average, When can we say that, the system load averge is too high?
When can we say that, load average is medium/low??... (8 Replies)
Hi,
i have installed solaris 10 on t-5120 sparc enterprise.
I am little surprised to see load average of 2 or around on this OS.
when checked with ps command following process is using highest CPU. looks like it is running for long time and does not want to stop, but I do not know... (5 Replies)
Hello AlL,..
I want from experts to help me as my load average is increased and i dont know where is the problem !!
this is my top result :
root@a4s # top
top - 11:30:38 up 40 min, 1 user, load average: 3.06, 2.49, 4.66
Mem: 8168788k total, 2889596k used, 5279192k free, 47792k... (3 Replies)
Hi ,
I am using 48 CPU sunOS server at my work.
The application has facility to check the current load average before starting a new process to control the load.
Right now it is configured as 48. So it does mean that each CPU can take maximum one proces and no processe is waiting.
... (2 Replies)
Hi,
I am getting a high load average, around 7, once an hour. It last for about 4 minutes and makes things fairly unusable for this time.
How do I find out what is using this. Looking at top the only thing running at the time is md5sum.
I have looked at the crontab and there is nothing... (10 Replies)
Here we go....
Preface:
..... so in a galaxy far, far, far away from commercial, data sharing corporations.....
For this project, I used the ESP-WROOM-32 as an MQTT (publish / subscribe) client which receives Linux server "load averages" as messages published as MQTT pub/sub messages.... (6 Replies)
Discussion started by: Neo
6 Replies
LEARN ABOUT DEBIAN
dangerball
dangerball(6x) XScreenSaver manual dangerball(6x)NAME
dangerball - a 3D ball that periodically extrudes spikes. Ouch!
SYNOPSIS
dangerball [-display host:display.screen] [-visual visual] [-window] [-root] [-delay number] [-speed number] [-count number] [-no-wander]
[-no-spin] [-wireframe] [-fps]
DESCRIPTION
Draws a ball that periodically extrudes many random spikes. Ouch!
OPTIONS -visual visual
Specify which visual to use. Legal values are the name of a visual class, or the id number (decimal or hex) of a specific visual.
-window Draw on a newly-created window. This is the default.
-root Draw on the root window.
-delay number
Per-frame delay, in microseconds. Default: 30000 (0.03 seconds.).
-speed number
Spike growth frequency. 0.0 - 0.25. Default: 0.05.
-count number
Number o spikes. Default: 30.
-wander | -no-wander
Whether the object should wander around the screen.
-spin | -no-spin
Whether the object should spin.
-wireframe | -no-wireframe
Render in wireframe instead of solid.
-fps Display the current frame rate, CPU load, and polygon count.
ENVIRONMENT
DISPLAY to get the default host and display number.
XENVIRONMENT
to get the name of a resource file that overrides the global resources stored in the RESOURCE_MANAGER property.
SEE ALSO X(1), xscreensaver(1)COPYRIGHT
Copyright (C) 2002 by Jamie Zawinski. Permission to use, copy, modify, distribute, and sell this software and its documentation for any
purpose is hereby granted without fee, provided that the above copyright notice appear in all copies and that both that copyright notice
and this permission notice appear in supporting documentation. No representations are made about the suitability of this software for any
purpose. It is provided "as is" without express or implied warranty.
AUTHOR
Jamie Zawinski.
X Version 11 5.15 (28-Sep-2011) dangerball(6x)