[Collectl-interest] Suggestion: Additional NFS data from /proc/self/mountstats (same as nfsiostat-c

Hi,

I love collectl and use it extensively for many performance related troubleshooting/monitoring  tasks in our server park.
The possibility to run live and/or record to file is a fantastic mix of features and very useful!

However, one thing that I miss, is NFS Response time data...
We use lots of NFS shares in our environment, and that particular metric is one of the most useful ones in my opinion.

As a complement to collectl, I use "nfsiostat" when NFS is suspected to be a performance bottleneck.
It shows me a number of good metrics and has a "RTT" (Round Trip Time) field, that at least gives me a hint of the NFS server responsetime.

If I read the documentation correct, it gets its data from  /proc/self/mountstats<file:///\\proc\self\mountstats>.



I think it would be very useful if those metrics could be collected in collectl as well.
The nfsiostat tool itself is a bit crude, at least in our a bit aged RedHat environment and for us it would be convenient to have these metrics managed with collectl instead.

Just a suggestion...
Thanks for the collectl tool!!

Kind Regards,

Thomas Oliw