Establishing baselines

Baseline information is operational data during normal system operations that provides clues that can help you solve problems.

You can gather useful baseline information using the StorageGRID Webscale system:

Property Value How to obtain
Average size of ingested objects

_____________ MB

Divide the average number of bytes stored daily by the average number of objects stored daily.
Average size of retrieved objects

_____________ MB

Divide the average number of bytes retrieved daily by the average number of objects retrieved daily.
Average storage consumption

_____________/consumed/day GB

_____________/consumed/day %

Go to the Grid Management Interface Dashboard, and click graph icon in the Available Storage chart panel.

Find a period where the operation is fairly stable and estimate the daily storage consumption rate in bytes and in percentage.

You can collect this information for the entire system or a subset of it.

Rate of S3/Swift Operations

_____________Operations/s

Select Grid Topology > Overview tab > Main.

Under API Operations, view the S3 Operations - Rate field.

Failed S3/Swift Operations

_____________

Select Grid Topology > Overview tab > Main.

Under API Operations, view the S3 Operations - Failed field.

Average ILM Evaluation Time

_____________ us

Select Node > CMS > Content > Overview tab > Main.

Under Information Lifecycle Management, view the Average ILM Evaluation Time field.

ILM Evaluation Rate

_____________Objects/s

Select Node > CMS > Content > Overview tab > Main.

Under Information Lifecycle Management, view the ILM Evaluation Rate field.

Average Query Latency

_____________ ms

Select Node > DDS > Data Store > Overview tab > Main.

Under Queries, view the Average Query Latency field.

Failed Queries

_____________

Select Node > DDS > Data Store > Overview tab > Main.

Under Queries, view the Total Queries - Failed (Timed-Out) field.

Failed Queries for Consistency Level Unmet

_____________

Select Node > DDS > Data Store > Overview tab > Main.

Under Queries, view the Total Queries - Failed (Consistency Level Unmet) field.

The following sample screenshot shows the Dashboard:
screenshot of Grid Management Interface dashboard
The following sample screenshot shows how you can select each attribute under each service to view baseline values for that attribute on the Overview tab:
screenshot showing LDR > Datastore selected