Re: Chelsio Forwarding performance and RELENG_13 vs RELENG_12 (solved)
Date: Thu, 03 Nov 2022 18:20:54 UTC
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