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As a follow up to previous emails (Gautam Thaker, Ingo Molnar, Ted Tso, et. al.) on the subject of large CPU overhead by the RT kernel when under heavy network load, I ran the following test in order to get more reasonable data. I have 19 nodes with 20 "virtual" node processes sending UDP messages to a single host at a rate of 100Hz for 38,000 packets per second. Using cyclesoak to determine cpu usage (over 240 samples, 1 sample per second), I found the following results: | ||||||||||||
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