VirtualPrivateServerBenchmark

Testing 32bits vs 64bits performances

The following test was performed using two Vultr VPS instances, more specifically:

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Servers Instances

• debian 8 32bits 768MB

vs

• debian 8 64bits 768MB

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CPU benchmark

• Software installed: 'mbw' and 'sysbench'

results shows no difference between the instances

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Memory use comparison

• Installed daemon to have some processes that holds memory

apache2
postgresql
mysql-server
tomcat8

The results shows that 64bit instance uses ~40 to ~60MB more then 32bit ones in the two just rebooted servers with the same daemons running.

A simple 'top' visual result can be shown in the image at following link

Some commentaries in the web:

• What is the memory usage overhead for a 64-bit application

• 32bit or 64bit for My Low End VPS, Take #2 – Low End Box