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I am using AWS micro instance running Apache HTTP Server and Tomcat servers. I have couple of Web Apps deployed on them where I use port forwarding from 80 to 8080 using Apache. Since I work for a startup (not a sysadmin, and willing to learn), I have to figure out whether we need to upgrade the server from micro to some other instance.

What benchmarks should I check to see if I should update the server? I checked free -m which gives about 300mb of free memory.

But what else should I check to see if the number of connections that Apache is receiving isn't choking it at anytime. Since I use port forwarding how do I check if the Tomcat connections are choking or not.

300mb Free memory is at the instance of time when I checked. But other times when the system may have load, how do I check that?

user23577
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1 Answers1

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You should setup monitoring tools to get detailed information on how your server and application is performing.

Also, you shouldn't use micro instances for production servers.

Use Case

http://aws.amazon.com/ec2/instance-types/

Low traffic websites or blogs, small administrative applications, bastion hosts, and free trials to explore EC2 functionality (t1.micro only)

CPU Considerations

http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/concepts_micro_instances.html

Micro instances (t1.micro) provide a small amount of consistent CPU resources and allow you to increase CPU capacity in short bursts when additional cycles are available. They are well suited for lower throughput applications and websites that require additional compute cycles periodically.

https://stackoverflow.com/questions/19623050/amazon-m1-small-vs-micro-instance-cpu-perfomance

In my testing, I've found that consuming 100% CPU for about 10-15 seconds on a micro instance, gets you throttled down to a fraction of that -- approximately 0.2 ECU -- for about the next 2-3 minutes, when the throttling lifts for a few seconds, then the cycle repeats

Network Speed Considerations

http://epamcloud.blogspot.com.au/2013/03/testing-amazon-ec2-network-speed.html

micro's have significantly bandwidth available to them

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Drew Khoury
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