On 10/21/2022 2:45 PM, mike tancsa wrote:
On 10/21/2022 2:30 PM, Navdeep Parhar wrote:
On 10/21/22 11:15 AM, mike tancsa wrote:
On 10/21/2022 2:13 PM, Navdeep Parhar wrote:

hw.cxgbe.ntxq=4
hw.cxgbe.nrxq=4

Thanks Navdeep!

Unfortunately, still the odd dropped packet :(

Can you try increasing the size of the queues?

hw.cxgbe.qsize_txq=2048
hw.cxgbe.qsize_rxq=2048

The stats show that you are using MTU 1500.  If you were using MTU 9000 I'd also have suggested setting largest_rx_cluster to 4K.

hw.cxgbe.largest_rx_cluster=4096

Thanks again, just 1500 MTU.  Shall I keep nt and nrxq at 4 still ?

Yes, I think 4 queues are enough for 10G.

Sadly, no luck. Still about the same rate of overflows :(


FYI, I worked around the issue by using two 520-CR NICs instead of the one 540-CR NIC and performance is solid again with no dropped packets

    ---Mike




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