On Mon, Nov 13, 2017 at 11:54:14PM +0900, David Miller wrote: > From: Simon Guinot <simon.guinot@xxxxxxxxxxxx> > Date: Mon, 13 Nov 2017 15:51:15 +0100 > > > IIUC the driver stops the queue if a threshold of 316 Tx descriptors is > > reached (default and worst value). > > That's a lot of latency. OK, then I'll keep the "tx_pending > 255" flushing condition. But note there is no other software mechanism to limit the Tx latency inside the mvneta driver. Should we add something ? And is that not rather the job of the network stack to keep track of the latency and to limit the txq size ?
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