Hi Pim, Thanks for the quick reply. I did set the interfaces up before changing the rx-mode. I tried 'adaptive' mode and it didn't make any difference either.
BTW, I'm using Linux control plane plugin and created a tap interface for each DPDPK interface. Another issue I'm having is that 'show hardware-interface' shows nothing here, regardless of the rx-mode. Regards, Xiaodong On Wed, Jul 20, 2022 at 1:06 PM Pim van Pelt <p...@ipng.nl> wrote: > Hoi Xiaodong, > > One thing to note, is that the interface must be state 'up' before changes > are affected. If I set to 'adaptive' (best of both worlds, interrupts in > low load, polling in higher load': > > DBGvpp# set interface rx-mode GigabitEthernet3/0/0 adaptive > > > > DBGvpp# set interface state GigabitEthernet3/0/1 down > > DBGvpp# set interface rx-mode GigabitEthernet3/0/1 adaptive > > (no change) > > > DBGvpp# show logging > > 2022/07/20 20:03:34:656 error interface/rx-q setting rx mode on the > interface GigabitEthernet3/0/1 queue-id 0 failed. > > dpdk_interface_rx_mode_change: unsupported op (is the interface up?) > > > DBGvpp# set interface state GigabitEthernet3/0/1 up > > DBGvpp# set interface rx-mode GigabitEthernet3/0/1 adaptive > > DBGvpp# show hardware-interfaces GigabitEthernet3/0/1 > > Name Idx Link Hardware > > GigabitEthernet3/0/1 2 up GigabitEthernet3/0/1 > > Link speed: 1 Gbps > > RX Queues: > > queue thread mode > > 0 vpp_wk_0 (1) padaptive > > ... > > > > > One side note: > - before setting rx-mode, "show hardware-interfaces" without arguments > will list them all. > - after setting the rx-mode, "show hardware-interfaces" returns empty and > requires a specific interface to be named. > > However, CPU load goes down and polling clearly stops. Maybe that helps :) > > groet, > Pim > > On Wed, Jul 20, 2022 at 9:44 PM Xiaodong Xu <stid.s...@gmail.com> wrote: > >> Hi, >> >> When I start vpp, the CPU usage will be close to 100% on the core that >> vpp is running on. I know this is normal because dpdk is running in poll >> mode. >> However when I set the rx-mode to 'interrupt', it doesn't make any >> difference. The command line I use looks like: >> >> # set interface rx-mode [ifname] interrupt >> >> Did I miss anything? Thanks for your attention and any suggestions are >> welcome. >> >> Regards, >> Xiaodong >> >> >> >> >> > > -- > Pim van Pelt <p...@ipng.nl> > PBVP1-RIPE - http://www.ipng.nl/ > > > >
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