MBUF usage 1%
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Hi there, i have setup a pfsense router and testing with iperf 100Mbps, but the MBUF goes to 1% (8356/1000000) and its stuck at 8356 sometimes goes to 8860. Also the Interrupt goes up to 7% when doing test with 100Mbps. CPU usage goes to 15% when doing iperf test 100Mbps. Is this normal or should i be worry . This is the hardware: Intel Core Duo CPU E7600 3.06GHz, 4GB RAM. I am planning to connect like 20 computers doing simple stuff like browsing and some voip phones. The NIC that i am using is I340-T4.
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Nothing there looks unexpected. Completely normal for that CPU with that load.
Try a harder test if you want to see more usage.
Steve
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Did some tests with 1Gbps and CPU goes up to 70% . Interrupt goes up to 40% and the MBUF stays like 1% (8500-1000000). Is Interrupt good, can i make it 0% or that's the way it works and is there a way to reset MBUF because even if i restart the server it goes immediately to 8500. Thanks
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No, the interrupt load is caused by the NICs moving traffic, that's expected.
Used mbuf clusters is just a measure of what is in use it's not something you could reset or would want to. The only time you would want to address that usage is if the system used all available mbufs and you are clearly a very long way from that!
https://docs.netgate.com/pfsense/en/latest/hardware/tune.html#mbuf-exhaustionSteve
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What if the MBUF after a while goes to 100% do i need than to reinstall pfsense?
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No, it's a temporary usage variable like the state table or general RAM use. It will grow and fall with network activity.
But there is almost zero chance of it hitting 100% with 20 hosts on a 100Mbps connection. I'd be surprised if you ever saw 25%.Steve
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Thanks
