I/O configuration is off

scylladb / scylla-monitoring

Simple monitoring of Scylla with Grafana

https://scylladb.github.io/scylla-monitoring/

Apache License 2.0

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I/O configuration is off #1579

Open amnonh opened 2 years ago

amnonh commented 2 years ago

Describe the issue logically I/O configuration is not set properly which does not utilize the disk.

Describe the condition when the issue happens

queus are getting longer, load is balanced disk load below their expected throughput.
For how long:

What the user should do when this happens Run scylla_io_setup manually Any Other info or Links.

slivne commented 2 years ago

We are working on making ioscheduler / io-tunning more correct (e.g. there are cases in which we know we are too optimistic - mixed workloads as an example).

Once those changes are merged then we can add metrics - right now running io-tune will not result in anything better.