Linux performance basicsI want to write about Cassandra performance tuning, but first I need to cover some basics: how to use vmstat, iostat, and top to understand what part of your system is the bottleneck -- not just for Cassandra but for any system. vmstat You will typically run vmstat with "vmstat sampling-period", e.g., "vmstat 5." The output looks like this: procs -----------memory---------- ---swap-- -----io---- -
