Latency query

[tn881023]

Hi all,

I am running opnsense on a bare metal N150 mini PC with 4 x Intel i226-v's (all running latest FW). I am using FQ_codel shaping on a 900/110 PPPoE WAN connection.

Regarding latency, would it be better to enable checksum offloading or disable? TSO and LRO are also disabled.

Thanks!

[meyergru]

I do not think it would change anything in the latency, since offloading only shifts that processing from the CPU to the NIC, which only reduces CPU load.

Instead, let me point you to this: https://docs.opnsense.org/manual/interfaces_settings.html, see the section about hardware CRC. From my own experience, I would keep the defaults, because whenever I enabled the hardware offloading of ANYTHING, I got into trouble sooner or later. Later is especially bad, because you cannot connect the dots and it takes ages to actually find what you did wrong a while before the problem pops up.

[tn881023]

That's great thanks meyergru