> -----Original Message----- > From: Michał Purzyński <michalpurzyns...@gmail.com> > Sent: Tuesday, October 15, 2019 2:10 PM > To: e1000-de...@lists.sf.net > Subject: [E1000-devel] The true meaning of the RSS redirection table > > Is the RSS redirection table (ethtool -X <int>) ignored when interrupts are > pinned to cores? >
What hardware driver is this for? > I configured a card with 12 queues and pinned all of them to cores on a > local NUMA nodes. Card is local to node 1, so with 12 cores per CPU I > pinned card's interrupts to cores 12-23 - and interrupts seem to be > delivered right there. > > Now, the redirection table lists cores 0...11 and I'm confused. I verified > that counters of interrupts on cores 0..11 are not growing for this card. > > -- > Michal Purzynski > I suspect what you're seeing is a driver's software ATR algorithm, where it tries to figure out which queue the traffic is sent on, and then create rules to target the receive traffic of that thread to the same queue. It's basically driver-implemented accelerated receive flow steering. So, it would supersede RSS for traffic which has associated Tx. Thanks, Jake _______________________________________________ E1000-devel mailing list E1000-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/e1000-devel To learn more about Intel® Ethernet, visit http://communities.intel.com/community/wired
