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You mean a list of things that can cause a VPS node to perform poorly?
Overselling (obviously)
However, overselling is only generally a problem in OpenVZ.
I say this for good reason, on KVM for example; you reach other limits before you are able to oversell your hardware, unless you only put 32GB of RAM in a Dual E5 machine or something really stupid...
DDoS / network attacks, game servers (which attract network attacks), spamming / abusive clients, "marketing" software, there are almost infinite things that can slow down a node.
A bunch of idiots doing dd "tests" or ioping every minute/hour also slows down the nodes quite a bit.
@Virtovo : more likely causing trouble or throttle the nodes and affect the resources of other VPS (I/O Perfomance, CPU abuse etc)
@hardcloud i got a case that sounds funny, it was not only slowing down but making TROUBLE LoL
I have some bad experience with gameservers recently
Everything when done excessively will affect any node.
CPU Abuse : for example digital currency mining, folding@home
Disk abuse : for example DD test, torrent, minecraft
Network abuse : DoS, DDoS, leecher, continuous downloading test file on a bad purpose
-- Placing 1000 user on a 32GB node with 1GB memory for each user.
@ftpit in that case it was the VPS spec that didn't meet the requirement of the game server CMIIW ?
@DalComp : yeah, update OS, wget script, then create database, is that so hard for the VPS with 2GB Ram and 1 Gbps port ?
@erawanarifnugroho : for mining, can it cause trouble to nodes too ?
iSky , yeah
Let say, one user use the core for mining, it will be 100% usage. If we give the user 4 cores, it will be 100% for all 4 cores. Another user which need the core processing power will see that the program they run were slower.
More and more, we need to reboot the node.Do you want to try it? Try to make 4 vps, and run mining at it. Make another vps, to run mysql or another script that need cpu, and see how it works.
then will it be trouble if i run java play framework and create database only ? @Erawanarif nugroho
Sorry, I don't get it. Do you run Minecraft, and having database at the same server? How many user/vps do you have in the node?
nope, i trying some script that require Java Play Framework and sync it with the mysql database. Also it was just beta test, and the results was fail. I use it alone, i just have 1 vps in that node but the providers claims it was causing trouble to ALL other user that was in same node with me. So i was curious what is the main problem that causing a big deal
Create a cronjob for dd/ioping that starts 'em every 5 minutes ;') (joke, don't do it)
LoL wget alone was flagged and suspended because make trouble to node, i can't think if i'm doing what you said. maybe i got IP Blocklist from them
Which provider flags wget? That's insane.
not wget only i just try some script that still on development, and running java play framework also create the database, but got suspended. The reason was "cause a trouble to the node and affect other users" i just using update OS, wget the script, installing java play framework and create mysql. then got suspended ROFL
JingLing
At one side, it might be us that causing the problem to the node.
At another side, it might be the provider that having bad config, overselling too much, or pushing too much user in the node.
@erawanarifnugroho : and it must be the second one, and they blame it on me.