Carlos Llamas wrote:
> I made a PHP script which locks a specific file in a NFS directory, measuring
> every step involved. Then exported the results to CSV and graphed it on ELK
> because I am more familiar with it.
Thanks for the additional details. It sounds like you have a
reproducible test
Carlos Llamas wrote:
> When this happens, apache2 processes on a backend VM (NFS client
> machine) wait in state D for a long time (I was only able to trace a
> file, and lasted 90s until file unlocked).
It sounds like the process is trying to unlock a file, and the system
call hangs for 90 secon
Hello,
We are facing this problem too with 3 backend VMs and a NFS VM.
Both servers are Google Cloud Compute Engine instances with plenty of CPU
and RAM. We don't see any correlation with high CPU or RAM usage whenever
this happens on any machine. When this happens, apache2 processes on a
backend
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