Yup - both are running under the same scrape interval (15s) and using the
same irate query:
irate(node_network_transmit_bytes_total{instance="xxx:9100",
device="eno1"}[1m])*8
It's an iperf test between each other and no interval argument is set
(default zero.)
I wonder if it has something to do with how Broadcom reports network stats
to /proc/net/dev?
On Monday, January 15, 2024 at 7:49:35 AM UTC+8 Alexander Wilke wrote:
> Do you have the same scrape_interval for both machines?
> Are you running irate on both queties or "rate" on the one and "irate" on
> the other?
> Are the iperf intervals the same for both tests?
>
> Dito Windyaksa schrieb am Montag, 15. Januar 2024 um 00:02:26 UTC+1:
>
>> Hi,
>>
>> We're migrating to a new bare metal provider and noticed that the network
>> metrics doesnt add up.
>>
>> We conducted an iperf test between A and B, and noticed there are "drops"
>> on the new machine during an ongoing iperf test.
>>
>> We also did not see any bandwidth drops from both iperf server/client
>> side.
>>
>> [image: Screenshot 2024-01-13 at 06.27.43.png]
>>
>> Both are running similar queries:
>> irate(node_network_receive_bytes_total{instance="xxx",
>> device="eno1"}[1m])*8
>>
>> One thing is certain: green line machine is running an Intel 10G NIC,
>> while blue line machine is running an Broadcom 10G NIC.
>>
>> Any ideas?
>> Dito
>>
>>
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