Mixing different NIC Speeds (1Gb & 10Gb) Performance Problem Question
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@ngr2001 said in Mixing different NIC Speeds (1Gb & 10Gb) Performance Problem Question:
I am going to try this MTU thing here in a sec, curious to what happens.
Doesn't do anything. I already tried everything on the pfSense that I could think of:
- Disable Hardware Checksum Offloading
- Changing the State Type from Keep to Loose
- Setting MSS & MTUs to 1420
- Disabling pf Scrub
The only solution that I don't like (which is not supported on the Cisco) is Ethernet Flow Control on both the WAN and LAN interfaces of the pfSense. Again a very ugly blunt solution that pauses the entire interface impacting other clients on your network.
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@lnguyen said in Mixing different NIC Speeds (1Gb & 10Gb) Performance Problem Question:
@stephenw10 Do you actually have Cable Internet? Or lucky enough to have standard AT&T Fiber ethernet?
I don't have either. I'm not in the US.
That is interesting that adding the switch would make any difference to a docsis issue though. Hard to see how that could happen.
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I just noticed something odd, when I moved the PF LAN nic from 1Gb to 10Gb the GUI is no longer showing Flow Control being enabled. I would expect to see rxpause & txpause.
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What NIC is it? Not all drivers report it so it can be displayed there.
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@stephenw10 Using a switch with larger buffers only mask the symptoms of broken TCP Flow Control. This isn't a pfSense issue. It's a DOCSIS issue when the WAN speed is greater than a LAN client, ergo 2.35Gbps WAN to 940Mbps LAN
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My LAN MTU is now 1460 in PF, so far no change is certain speedtests like fast.com when PF lan @ 10Gb. Speeds still slowly tapering down to 500Mbps. However with MTU at 1460 and PF Lan at 1Gb performance is still solid.
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@ngr2001 Yes what NIC are you using on the pfSense?
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Intel X550-T2
When that same LAN NIC is moved to 1Gb is reports (rxpause & txpause) when I move the patch cable over to 10Gb these values disappear in the GUI.
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@ngr2001 Can you do a
show int 10GigabitEthernet1/2/8? -
Ah, that seems like a pretty big clue....
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The 7250 doesn't have any 10GbaseT ports though so I assume that's a different Intel NIC?
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@ngr2001 said in Mixing different NIC Speeds (1Gb & 10Gb) Performance Problem Question:
My LAN MTU is now 1460 in PF, so far no change is certain speedtests
Did you set MSS like I suggested though? MTU does nothing to pf.
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@stephenw10 Copper 10G-BaseT SFP+ modules most likely being used
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Yes I have SPF+ RJ45 adapters in the 7250, thus I can easily move the CAT8 from one jack to the over for this test.
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@ngr2001 Can you do a show int 10GigabitEthernet1/2/8?
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I did not, but I just corrected that. I reset the states, waited a few mins and so far there may be a small boost in performance. I seem to be averaging now 700Mpbs instead of 500Mbps on fast.com, however if I switch ports we get the full 900+. So better but not perfect.
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1/2/8 - My 10Gb uplink to PF LAN Nic.
I just noticed that 2 of my main clients currently at 1Gb on the switch have a lot of dropped packets. However right now I am running speedtests and I am not seeing the dropped packet counter increasing, so who know under which setup all these packets were dropped.
1Gb Win 11 Client
1Gb Win 11 Client
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Should I disable flow control on my WAN NIC as a long term production setup being I am on Cable Internet ?
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@ngr2001 I am not sure you are catching what I have said a few times across the two threads. Ethernet Flow Control is done on L2, which is what you have been configuring. TCP Flow Control is done at L4 which seems to not function when pfSense WAN is connected to DOCSIS cable modem. If you want to use Ethernet Flow control, which IMO is ugly, then you should leave it enabled.
With my setup, I don't use ethernet flow control.
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Mmm, try with the MTU at the default 1500 so it matches the switch and client.
200k input errors is pretty significant though.
