On 07/11/18 07:58, Eggert, Lars wrote: > Hi, > > I have netmap working with the T6 cards now. > > However, performance is very poor. It seems to take several milliseconds > after a NIOCTXSYNC ioctl before the tail is updated?
Try changing lazy_tx_credit_flush to 0 on the running kernel with a debugger, or compile the driver with it set to 0 -- it's in t4_netmap.c: int lazy_tx_credit_flush = 1; I'm surprised I don't have a tunable/sysctl for it. I'll add one really soon. Regards, Navdeep > > In case it matters, here is what is in loader.conf: > > hw.cxgbe.num_vis=2 > hw.cxgbe.fl_pktshift=0 > hw.cxgbe.ntxq=1 > hw.cxgbe.nrxq=1 > hw.cxgbe.qsize_txq=512 > hw.cxgbe.qsize_rxq=512 > hw.cxgbe.cong_drop=1 > hw.cxgbe.pause_settings=1 > hw.cxgbe.autoneg=0 > hw.cxgbe.nm_rx_nframes=1 > hw.cxgbe.nm_rx_ndesc=1 > > Lars > _______________________________________________ freebsd-net@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "freebsd-net-unsubscr...@freebsd.org"
