Hal Rosenstock wrote: > Hi, > > I'm seeing the following messages from IPoIB: > ib0: post_send failed > ib0: post_send failed > ib0: post_send failed > ib0: post_send failed > ib0: post_send failed > ib0: post_send failed > NETDEV WATCHDOG: ib0: transmit timed out > ib0: transmit timeout: latency 1374 msecs > ib0: queue stopped 1, tx_head 140245691, tx_tail 140245565 > > What are the possible (and most likely) causes of post_send failures ? I > went through the code for all the errors (some at the driver level) but > none popped out at me. >
Is it possible that the receiver is overwhelmed and hence the tx_ring is full? Is this a UDP application? > Once the transmit queue is stopped, does the interface need to be taken > down and then back up to restart this ? One does not need to take down the interface. It should be able to recover on it's own. There is a timer that kicks in and checks if the tx_ring is still full or not- the transmits should start again. Thanks! Pradeep _______________________________________________ general mailing list [email protected] http://lists.openfabrics.org/cgi-bin/mailman/listinfo/general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
