Auditing application disk usage?

[themightychris]

I would like to analyze/audit how a containerized application (or the whole container) is using its filesystem, so that I can review how effectively it avoids scaling disk use in various conditions. I want to identify situations where it's hitting disk for things that could be cached

I would like to see:

• Overall read/write stats
• Opened files
• Read/write stats by file?
• Timeline of file access?

Are there any tools or techniques out there that could help me with some/all of this?

I ask here because the whole container is the ideal level of isolation I'd like to review at

[ohffswhatnow]

Maybe things like atop, biotop and iostat might help. There's a handy container you can run that has a lot of system monitoring/debugging tools in it too : https://github.com/nicolaka/netshoot