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f00d6198af
Increasing this value 10x has lowered CPU usage on a Myricom based deployment significantly with reportedly no adverse side-effects. After reviewing the Zeek 3 IO loop, my hunch is that previously when no packets were available, we'd sleep 20usec every loop iteration after calling ->Process() on the packet source. With current master ->Process() is called 10 times on a packet source before going to sleep just once for 20 usec. Likely this explains the increased CPU usage reported. It's probably too risky to increase the current value, so introduce a const &redef value for advanced users to tweak it. A middle ground might be to lower ``io_poll_interval_live`` to 5 and increase the new ``Pcap::non_fd_timeout`` setting to 100usec. While this doesn't really fix #2296, we now have enough knobs for tweaking. Closes #2296. |
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| test-all-policy.zeek | ||