I want to find the information of the Ethernet Throughput Performance for AM335x.
Is there this?
If there is not this, is there anything substituted? For example, the information for the Sitara MPU having the Ethernet Subsystem same as AM335x.
Performance for ethernet and other peripherals is captured in the "Features and Performance Guide" meant for each release. Here are the ethernet performance numbers from the latest release:
Thank you for your reply.
Do you know the ethernet performance numbers when 2 ports are used at the same time?Or can you predict them?
When traffic is flowing only between two ports, because only hardware switch is involved and no software comes into picture, I expect we will be able to do line rate (at least at 100Mbps).
When packets are sent to/received from host port (and thus to Linux running on host processor), then the aggregate performance should not any different from what you are now getting from a single port.
Above are only perdictions since I have not really tested this yet.
According to the TCP Performance in the wiki, the CPU Load in the case of 1 port is almost 100%.Therefore, I think that the software load in the case of 2 ports is very heavy.
In the case of 2 ports, do not the performance numbers decrease?
I guess we are both talking about two different configurations here.
You seem to be pointing at a use case where the 3-port switch inside the AM335x is configured such that it presents two independent network interfaces in Linux - representing the two external interfaces. Yes, in this configuration, the host processor will be shared between the two independent interfaces (each with its own IP address) and performance numbers will decrease. It will be fair to assume the performance will come down by *atleast* 50% - the actual number can only be determined by experiments.
I was talking about the case where there are two external ports, but both of them feed to the same network interface in Linux (single IP address on the DUT).
> I was talking about the case where there are two external ports , but both of them feed to the same network interface in Linux ( single IP address on the DUT ) .
In this case, is the software load not any different from when one port was used?
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