I want to measure the performance of VoltDB RDBMS against TPCC queries. I have tried some VoltDB system procedures like @Statistics, @SystemCatalog, but I am looking for CPU and memory utilization percentage.
Where do I get these performance details? Though @Statistics gives CPU utilization, it is in integer form. Can I measure it in float format?
As you pointed out, @Statistics CPU provides the CPU utilization % as an integer. VoltDB doesn't have any other way to provide this. You might use some linux command-line tools such as top or mpstat if you are looking for something with more precision.
The memory utilization is reported by the RSS number in @Statistics MEMORY. You can also track this directly using Linux tools.
You may find the Benchmarking chapter in the Planning Guide useful, as well as the first 4 chapters of the Guide to Performance and Customization.