* xxx_DESCS_PER_LOOP workaround
@ 2022-07-07 16:01 Antonio Di Bacco
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From: Antonio Di Bacco @ 2022-07-07 16:01 UTC (permalink / raw)
To: users
I'm using the ice PMD driver and, luckily, before going mad, I
discovered that an rte_eth_rx_burst with a burst size of 1 will never
succeed even if packets have arrived on the network card. This is due
to the fact that ICE_DESCS_PER_LOOP is set to 4 or 8 and then you need
to use a burst size not lower than 4 or 8.
Now, I have an application where a single packet (9000 bytes) has to
be delivered through the network with the lowest possible latency.
Is it possible to workaround this limitation by accepting the
performance degradation?
I read that there is a "runtime" option -a <BDF>,rx_low_latency=1
but I'm not sure if this will be a workaround.
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