Hey Viktor, If you set ATRSampleRate to zero you are disabling ATR. ATR attempts to keep the incoming flows on the queue/CPU that they are transmitted on. The idea being to keep the flow on the same CPU as the application.
Thanks, -Don Skidmore <donald.c.skidm...@intel.com> > -----Original Message----- > From: Viktor Khomyuk [mailto:v.khom...@office.ngs.ru] > Sent: Wednesday, December 10, 2014 2:33 AM > To: e1000-devel@lists.sourceforge.net > Subject: [E1000-devel] ixgbe use only one queue for outgoing vlan when > AtrSampleRate=0 > > Hello! When option AtrSampleRate is set to 0 and when vlan interface > (eth3.4002) is using for outgouing traffic only one (TX) interrupt is using. > Without AtrSampleRate=0,0 all 8 interrupts are using. > Do You know why this happens? > > Incoming interface eth2 > grep eth2 /proc/interrupts > 141: 45174 0 0 0 0 0 0 0 0 eth2-TxRx-0 > 142: 7 44724 0 0 0 0 0 0 0 eth2-TxRx-1 > 143: 7 0 45014 0 0 0 0 0 0 eth2-TxRx-2 > 144: 7 0 0 44558 0 0 0 0 0 eth2-TxRx-3 > 145: 7 0 0 0 45416 0 0 0 0 eth2-TxRx-4 > 146: 7 0 0 0 0 45582 0 0 0 eth2-TxRx-5 > 147: 7 0 0 0 0 0 45696 0 0 eth2-TxRx-6 > 148: 7 0 0 0 0 0 0 682 0 eth2-TxRx-7 > 149: 1 0 0 0 0 0 0 0 0 eth2 > > Outgoing interface eth3.4002 > grep eth3 /proc/interrupts > 150: 36 0 0 0 0 0 0 0 0 eth3-TxRx-0 > 151: 13 34 0 0 0 0 0 0 0 eth3-TxRx-1 > 152: 13 0 34 0 0 0 0 0 0 eth3-TxRx-2 > 153: 13 0 0 34 0 0 0 0 0 eth3-TxRx-3 > 154: 19 0 0 0 35 0 0 0 0 eth3-TxRx-4 > 155: 13 0 0 0 0 34 0 0 0 eth3-TxRx-5 > 156: 13 0 0 0 0 0 34 0 0 eth3-TxRx-6 > 157: 13 0 0 0 0 0 0 71555 0 eth3-TxRx-7 > 158: 2 0 0 0 0 0 0 0 0 eth3 > * > *Our configuration* > *kernel 3.14.23 > ixgbe 3.22.3 or ixgbe 3.21.2 > options ixgbe RSS=8,8 AtrSampleRate=0,0 > > > ------------------------------------------------------------------------------ Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server from Actuate! Instantly Supercharge Your Business Reports and Dashboards with Interactivity, Sharing, Native Excel Exports, App Integration & more Get technology previously reserved for billion-dollar corporations, FREE http://pubads.g.doubleclick.net/gampad/clk?id=164703151&iu=/4140/ostg.clktrk _______________________________________________ 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
