Hi Todd,
I can set affinity of an interrupt to multiple cores in kernel 3.10.54, why?
It shows PCI-MSI-edge but not IR-PCI-MSI-edge
# uname -r
3.10.54
# cat /proc/interrupts
52: 201788 64236 50792 67364 92508 63360
49267 40366 PCI-MSI-edge eth1-TxRx-0
53: 36781 10741 8005 32347 18399 9787
6708 4901 PCI-MSI-edge eth1-TxRx-1
54: 65332 15334 12524 36306 20951 11250
8874 6616 PCI-MSI-edge eth1-TxRx-2
55: 312311 177556 131037 123123 287075 168315
109039 69273 PCI-MSI-edge eth1-TxRx-3
56: 62499 33244 24862 45179 55156 34390
22097 14986 PCI-MSI-edge eth1-TxRx-4
57: 166171 75797 57069 70045 123485 79925
58036 43655 PCI-MSI-edge eth1-TxRx-5
58: 27657 6801 5086 29928 18827 6228
4610 3152 PCI-MSI-edge eth1-TxRx-6
59: 325169 184371 135124 125212 279277 164904
96636 52003 PCI-MSI-edge eth1-TxRx-7
# cat /proc/irq/52/smp_affinity
ff
BR
Xu Wen
At 2014-10-16 00:06:06, "Fujinaka, Todd" <todd.fujin...@intel.com> wrote:
>Yes. You can only set affinity of an interrupt line to one core.
>
>Todd Fujinaka
>Software Application Engineer
>Networking Division (ND)
>Intel Corporation
>todd.fujin...@intel.com
>(503) 712-4565
>
>-----Original Message-----
>From: 蒙奇D小碗豆 [mailto:wenx05124...@163.com]
>Sent: Wednesday, October 15, 2014 3:45 AM
>To: e1000-devel@lists.sourceforge.net
>Subject: [E1000-devel] igb driver irq affnity
>
>Hi,
>
>1.
>The netwrok card I350 running with igb driver. There are 8 tx-rx queues, each
>queue has a interrupt vector.
>I can only set a irq line to one core. If I set the affnity to multiple core,
>the hardware interrupt only comes out on one core.
># uname -r
>2.6.32-279.19.10.el6.x86_64
>
># cat /proc/interrupt | grep eth1
> 42: 29424 0 0 0 0 0
> 0 0 IR-PCI-MSI-edge eth1-TxRx-0
> 43: 107313 0 0 0 0 0
> 0 0 IR-PCI-MSI-edge eth1-TxRx-1
> 44: 56983 0 0 0 0 0
> 0 0 IR-PCI-MSI-edge eth1-TxRx-2
> 45: 218351 0 0 0 0 0
> 0 0 IR-PCI-MSI-edge eth1-TxRx-3
> 46: 24512 0 0 0 0 0
> 0 0 IR-PCI-MSI-edge eth1-TxRx-4
> 47: 221472 0 0 0 0 0
> 0 0 IR-PCI-MSI-edge eth1-TxRx-5
> 48: 13703 0 0 0 0 0
> 0 0 IR-PCI-MSI-edge eth1-TxRx-6
> 49: 86444 0 0 0 0 0
> 0 0 IR-PCI-MSI-edge eth1-TxRx-7
>
># cat /proc/irq/42/smp_affnity
>ff
>I also download the newest version of the igb driver, it's also like this.
>
>
>I compiled a new kernel 3.10.54. The interrupt vector can assigned to all the
>cores. It shows PCI-MSI-edge but not IR-PCI-MSI-edge # uname -r
>3.10.54
>
># cat /proc/interrupt | grep eth1
> 52: 174 6 8 26 30 5
> 4 1 PCI-MSI-edge eth1-TxRx-0
> 53: 9 4 3 22 2 7
> 1 0 PCI-MSI-edge eth1-TxRx-1
> 54: 11 5 3 23 9 4
> 4 0 PCI-MSI-edge eth1-TxRx-2
> 55: 62 24 25 36 47 35
> 21 14 PCI-MSI-edge eth1-TxRx-3
> 56: 95 19 15 27 51 19
> 18 2 PCI-MSI-edge eth1-TxRx-4
> 57: 14 5 0 23 1 2
> 3 0 PCI-MSI-edge eth1-TxRx-5
> 58: 45 4 3 25 8 4
> 1 1 PCI-MSI-edge eth1-TxRx-6
> 59: 122 37 37 44 85 62
> 43 17 PCI-MSI-edge eth1-TxRx-7
>
># cat /proc/irq/42/smp_affnity
>ff
>
>I investigate the kernel code, It seems there are something matter with
>interrupt-mapping? How Can I fix this in the 2.6.32-279.19.10.el6.x86_64?
>
>BR
>Xu Wen
>
>
>
>
------------------------------------------------------------------------------
Comprehensive Server Monitoring with Site24x7.
Monitor 10 servers for $9/Month.
Get alerted through email, SMS, voice calls or mobile push notifications.
Take corrective actions from your mobile device.
http://p.sf.net/sfu/Zoho
_______________________________________________
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
