Posted by & filed under Web Server.

I’ve been happily hosting my various PHP/nginx websites and occasional crazy Node.js application on a Linode 1024 VPS for the last couple years. Recently I’ve been looking into AWS and other VPS/PaaS providers for side projects and figured I should check out what I was getting from my Linode.

Linode Upgrade/Downgrade

Linode Upgrade/Downgrade

Interesting. Apparently I haven’t upgraded or performed a reboot on my VPS in a long time.

Linode Uptime

Linode Uptime

I believe these changes also included some SSD upgrades as well as a NIC overhaul. The vCPU “upgrade” from 8 cores to 2 is of course an obvious drawback. However, after doing some quick research, people were reporting before and after benchmarks having the same quality, as if a vCPU was more likely to be dedicated to one owner. The RAM usage was the most appealing as I barely touch bandwidth, so I figured it was worth the risk of upgrading.

Pre-Upgrade Benchmark (8 x vCPU)

$ siege -c 20 -r 100 https://thomashunter.name
** SIEGE 3.0.5
** Preparing 20 concurrent users for battle.
The server is now under siege.. done.

Transactions: 4000 hits
Availability: 100.00 %
Elapsed time: 412.95 secs
Data transferred: 7.33 MB
Response time: 1.49 secs
Transaction rate: 9.69 trans/sec
Throughput: 0.02 MB/sec
Concurrency: 14.48
Successful transactions: 4000
Failed transactions: 0
Longest transaction: 6.76
Shortest transaction: 0.15

Post-Upgrade Benchmark (2 x vCPU)

$ siege -c 20 -r 100 https://thomashunter.name
** SIEGE 3.0.5
** Preparing 20 concurrent users for battle.
The server is now under siege.. done.

Transactions: 4000 hits
Availability: 100.00 %
Elapsed time: 254.19 secs
Data transferred: 7.33 MB
Response time: 0.72 secs
Transaction rate: 15.74 trans/sec
Throughput: 0.03 MB/sec
Concurrency: 11.28
Successful transactions: 4000
Failed transactions: 0
Longest transaction: 2.85
Shortest transaction: 0.15

Conclusion

Benchmark CPU Before and After

Benchmark CPU Before and After

The number of transactions per second went up by 50%! The concurrency went down a little (less cores for handling concurrent processing), but that doesn’t matter too much for a web server. As you can see in the image above, the CPU utilization went down a decent chunk as well.

The upgrade is definitely worth it. Fear not the reduced core count.

Thomas Hunter II

Support Thomas on Patreon. Thomas is the author of Advanced Microservices and a prolific public speaker with a passion for reducing complex problems into simple language and diagrams. His career includes working at Fortune 50's in the Midwest, co-founding a successful startup, and everything in between.

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