Hardware tuning

[Antibiotic]

Hello,
pfsense turning have a tip for igb cards: kern.ipc.nmbclusters="1000000"
Will this work for igc cards or any other tweaks for this cards?

[stephenw10]

You almost certainly don't need 1M nmbclusters. The automatically defined value is almost always correct.

The same goes the igc tunables. We upstreamed a few changes to the defaults, what is set there now should be good.

Steve

[Antibiotic]

@stephenw10 Oki

[tomashk]

@stephenw10 by "now" you mean latest plus version of pfsense? If yes, is it different when compared to latest CE version? I wonder what changed especially if there is something I can apply to my 2.7.2

[stephenw10]

Check the max interrupt rate:

[24.03-RELEASE][admin@4200.stevew.lan]/root: sysctl hw.igc
hw.igc.max_interrupt_rate: 20000
hw.igc.eee_setting: 1
hw.igc.sbp: 1
hw.igc.smart_pwr_down: 0
hw.igc.rx_abs_int_delay: 66
hw.igc.tx_abs_int_delay: 66
hw.igc.rx_int_delay: 0
hw.igc.tx_int_delay: 66
hw.igc.disable_crc_stripping: 0

[tomashk]

@stephenw10 Thank you. Apparently I have the same values, or maybe for my I225-V I have one more than your list:

hw.igc.rx_process_limit: 100

[Antibiotic]

@tomashk said in Hardware tuning:

hw.igc.rx_process_limit: 100

What the benefit from this?
Are you put this in boot,conf or system tunable?

[Antibiotic]

@stephenw multi queue support for this NIC? in default settings or can add:

hw.igc.rx_process_limit="-1"
hw.igc.tx_process_limit="-1"

[stephenw10]

It defaults to 100. Yes it's multiqueue.

       hw.igc.rx_process_limit
	       Maximum	number	of received packets to process at a time.  De-
	       fault is	100.  A	value of -1 means unlimited.

Unlikely you will see any advantage to setting that over 100 IMO. But you can try it.

[Antibiotic]

@stephenw10 Yea, i think you reply to other guy)))
In my settings pfSense 24.03, do not have this option: hw.igc.rx_process_limit

sysctl hw.igc
hw.igc.max_interrupt_rate: 20000
hw.igc.eee_setting: 1
hw.igc.sbp: 1
hw.igc.smart_pwr_down: 0
hw.igc.rx_abs_int_delay: 66
hw.igc.tx_abs_int_delay: 66
hw.igc.rx_int_delay: 0
hw.igc.tx_int_delay: 66
hw.igc.disable_crc_stripping: 0

[stephenw10]

Yes because it defaults to 100. You asked about setting it to -1 which is unlimited I don't think that will make any difference as 100 is sufficient. But it's also unlikely to cause a problem so you can try it.

[Antibiotic]

@stephenw10 I mean in my settings 100 is absent at all

[tomashk]

@Antibiotic said in Hardware tuning:

@tomashk said in Hardware tuning:

hw.igc.rx_process_limit: 100

What the benefit from this?
Are you put this in boot,conf or system tunable?

I haven't set it. It was there by default. I mentioned it because it wasn't present in listing provided by @stephenw10

[stephenw10]

Right because it now is the default so you don't need to set it. You can try setting it to something different as a test if you want but I don't believe it will make any difference.