Ethernet performance using TSE in uClinux

Benjamin,

As stated already, you won't get the speeds you are looking for with Linux. It may be possible but difficult on Nios II.

But to try to answer your questions

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1. How do I compile the kernel with full optimizations?

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There is a setting for the optimization and debug level to use for the build in menuconfig.

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2. How do I increase cache size?

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There are settings for cache size and various other parts of the CPU in SOPC Builder, one of the tools used to generate the FPGA image.

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3. How do I decrease memory latency?

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This depends on a lot of things -- speed of the RAM, type of the RAM, speed of the processor, cache size, burst settings, etc. You'll need a lot of back and forth with the hardware/fpga designers on this. Some other sections on this forum may be more helpful on this.

If you do choose to go with Linux and manage to get any speed improvements, please post back in this thread.