Preface

Performance Profiles can be used to optimise just:store’s data throughput for certain applications like ingest, playout or video editing.

Changing the Performance Profile

Changing a profile is done in real-time by just:store. Processes which are already running will not change their priority

The system is fully optimised for real-time read operations. Write operations will be slower, but do not affect read operations.

Advantages	Disadvantages

Advantages	Disadvantages
Better performance for read operations.	Write operations will be slower.

The system is optimised for a high amount of read/write requests. The I/O performance is shared between read and write operations.

Advantages	Disadvantages

Advantages	Disadvantages
Write and read operations have the same priority, resulting in a balanced data throughput. Best profile when using bandwidth limitation. Requests are handled via FIFO method, i.e. the “oldest” (first) entry of the processing queue is processed first.	If the main usage is playout, write operations will have the same priority, meaning that the response time for read operations may be increased. If the main usage is ingest, read operations will have the same priority, meaning that the response time for write operations may be increased.

The system is fully optimised for real-time write operations. Read operations are slowed down in favor of writing.

Advantages	Disadvantages

Advantages	Disadvantages
Better performance for write operations.	Read operations will be slower.