Hello,
I aggre with Anup, nodetool is adding some overhead.
You could use dstat or sjk ttop.
See below some link to get started:
https://tobert.github.io/pages/als-cassandra-21-tuning-guide.html
https://academy.datastax.com/support-blog/deeper-dive-diagnosing-dse-performance-issues-ttop-and-mult
Hi,
The nodetool output should be accurate and reliable.
But using nodetool command for monitoring is not a very good idea.
Nodetool has its own resource overhead each time it is invoked.
You should ideally use a standard monitoring tool/method.
Regards,
Anup Shirolkar
On Tue, 23 Oct 2018
Hi All,
Is nodetool info information is accurate to monitor memory usage, intially
with 3.1.0 we had monitoring nodetool infor for heap usage and it never
reported this information as high,after upgrading to 3.11.2 we started
getting high usage using nodetool info later upgraded to 3.11.3 and sa
