Sometimes your performance test results, or the encoding performance of a deployed EVVR Container encoder, seem lower than you have anticipated.
We have listed below a few reasons why this may happen and some ways you may diagnose it.
Not enough bandwidth
This can happen because:
There's a poor network connection between the encoder and the server.
The "bandwidth limit" for the encoder has been set too low on the server.
Why this is a problem:
Depending on the scene, a single stream can require up to 2MB/s to maintain a 1080p / 30fps stream.
How this will be illustrated:
A "Limited by available bandwidth" message will be shown on the performance page.
Slow processor clock speeds
This can happen because:
You have a lower-powered or older CPU.
You have a newer CPU that uses "efficiency cores"
Why this is a problem:
Each encoding stream can only utilise a maximum of 2 threads at once.
Unfortunately, this can result in spare cores and therefore processing power not being utilised.
This can be confusing for users who expect a CPU with multiple spare cores to handle the workload.
How this will be illustrated:
A "Limited by device performance" message will be shown on the performance page, with the CPU reporting less than 100% utilisation.
A lower-than-expected performance may be output by the performance testing tool, with the CPU reporting less than 100% utilisation.
Available host resources are overloaded
This can happen because:
You have tried to run too many streams or too high a quality.
If the EVVR Container is on a machine with shared resources, applications external to the encoder can affect performance.
There isn't enough RAM or cache to reach the intended performance.
Why this is a problem:
Encoding can be limited by:
CPU (speeds, threads and cache)
RAM
Temperature throttling
When these are overused, stability and encoding performance can suffer.
How this will be illustrated:
A "Limited by device performance" message may be shown on the performance page.
On the performance page, there are illustrations at the top of the page showing the load for any metrics we may have access to.
A lower-than-expected performance may be output by the performance testing tool.