On 16 Feb 2021, at 0:58, Daniel Ponte wrote:
On Mon, Feb 15, 2021 at 10:25:47PM +0100, Kristof Provost wrote:
On 15 Feb 2021, at 22:09, Daniel Ponte wrote:
I've noticed that since upgrading to stable/13-n244514-18097ee2fb7c
from
12.2-STABLE, throughput on my WAN interface (the box runs pf) is
incorrectly showing double in systat -if, as well as in vnstat and
pftop
from ports. The LAN interface does not appear to be so afflicted.
`systat -if` doesn’t read the pf counters, so I wouldn’t expect
that to be
related.
Those are the interface counters.
What network card and driver do you use?
Kristof
I, too, questioned the relation. They are igb(4) I210 builtin
interfaces
(in a Protectli Vault 4).
systat -if during said speed test:
igb1 in 11.670 Mb/s 11.670 Mb/s
1.067 GB
out 319.975 Mb/s 320.458 Mb/s
2.062 GB
igb0 in 640.120 Mb/s 640.690 Mb/s
6.351 GB
out 5.824 Mb/s 5.824 Mb/s
987.050 MB
igb1 is inside, igb0 is outside. The 6GB:2GB difference in totals seen
above
is indeed real; this machine did not initiate that much traffic on its
own.
Even stranger, in that you appear to only have the issue on one of your
igb0 interfaces.
My initial guess was that there was a driver bug causing it to double
count the packets.
That machine has 4 ethernet ports, does it have 4 igbX interfaces as
well? Are there any vlans configured? (My current thinking is still that
it’s a driver issue, manifesting only on one of the interfaces because
of a configuration difference.)
It may also be useful to try capturing packets on igb0 and correlating
the number of captured packets with the counters.
I’m not all that familiar with the igb driver code, so I don’t know
if I’ll be able to help much.
Best regards,
Kristof
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