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Altera_Forum's avatar
Altera_Forum
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10 years ago

IOWR/IORD latency

Hi all! Sorry for prvious empty thread, I have no idea what happened. I'm experiencing some strange latency when using IOWR macros. I've added added custom 8-bit slave to QSYS and got h...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

You will probably find that the performance counters represent considerable overhead. Try reading the registers 10,000 times in one performance counter. Then divide the time by 10,000 to get a result that isn't lost in noise.