License block: Vezha features
What it shows
CPU IOWAIT in Vezha is available as cpu.iowait_pct. On Linux, the agent reads /proc/stat, counts iowait per core and forms an aggregated value for a quick assessment of I/O status.
Why it matters
This metric helps not to confuse “high CPU” with a situation where the CPU is simply waiting for a disk. The solutions in these two cases are different: optimizing the code won’t help if the node is bogged down in I/O.
An example from practice
CPU remained moderate during peak period, but iowait skyrocketed. The team transferred hot data to a faster storage class and removed the tail of delays in a critical write scenario.