On 10/24/2016 11:55 AM, ychen wrote:
> hi, I am a freshman to ovs DPDK, when I tried to launch ovs with dpdk inited,
> I found that all the ovs threads are pinned to master lcore,
> but I can't find any code for setting the affinity of the specified thread.
On older versions of OVS you you can set the affinity via the -c
0x<mask> vswitchd dpdk cmd line arg. It will use the lsb only. For the
latest versions, you can set this through OVSDB - alternatively you can
not set it and by default the non-pmd threads will float on the cores
that vswitchd runs on.
> Here is my configuration:
> lscpu
> Architecture: x86_64
> CPU op-mode(s): 32-bit, 64-bit
> Byte Order: Little Endian
> CPU(s): 48
> On-line CPU(s) list: 0-47
> Thread(s) per core: 2
> Core(s) per socket: 12
> Socket(s): 2
> NUMA node(s): 2
> Vendor ID: GenuineIntel
> CPU family: 6
> Model: 63
> Stepping: 2
> CPU MHz: 2599.988
> BogoMIPS: 4600.75
> Virtualization: VT-x
> L1d cache: 32K
> L1i cache: 32K
> L2 cache: 256K
> L3 cache: 30720K
> NUMA node0 CPU(s):
> 0,2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,32,34,36,38,40,42,44,46
> NUMA node1 CPU(s):
> 1,3,5,7,9,11,13,15,17,19,21,23,25,27,29,31,33,35,37,39,41,43,45,47
>
>
> ovs-vsctl list open_vswitch
> _uuid : 61d9066b-178e-4672-b8b3-9dcb5587565d
> bridges : [cc2605fb-fcbb-4627-8834-080c43534119]
> cur_cfg : 68
> datapath_types : [netdev, system]
> db_version : []
> external_ids : {}
> iface_types : [dpdk, dpdkr, dpdkvhostuser, dpdkvhostuserclient,
> geneve, gre, internal, ipsec_gre, lisp, patch, stt, system, tap, vxlan]
> manager_options : []
> next_cfg : 68
> other_config : {dpdk-init="true", dpdk-lcore-mask="0xf",
> dpdk-socket-mem="1024,1024", pmd-cpu-mask="f0"}
> ovs_version : []
> ssl : []
> statistics : {}
> system_type : []
> system_version : []
>
>
> ps -To tid,pid,psr,comm -p 28262
> TID PID PSR COMMAND
> 28262 28262 0 ovs-vswitchd
> 28263 28262 39 vfio-sync
> 28297 28262 0 eal-intr-thread
> 28298 28262 1 lcore-slave-1
> 28299 28262 2 lcore-slave-2
> 28300 28262 3 lcore-slave-3
> 28301 28262 0 dpdk_watchdog2
> 28302 28262 0 vhost_thread1
> 28303 28262 0 pdump-thread
> 28304 28262 0 ct_clean3
> 28305 28262 0 urcu4
> 28744 28262 0 handler101
> 28745 28262 0 handler100
> 28746 28262 0 handler99
> 28747 28262 0 handler98
> 28748 28262 0 handler95
> 28749 28262 0 handler77
> 28750 28262 0 handler79
> 28751 28262 0 handler80
> 28752 28262 0 handler81
> 28753 28262 0 handler73
> 28756 28262 0 handler92
> 28757 28262 0 handler82
> 28758 28262 0 handler96
> 28759 28262 0 handler71
> 28760 28262 0 handler61
> 28761 28262 0 handler62
> 28762 28262 0 handler83
> 28763 28262 0 handler63
> 28764 28262 0 handler84
> 28765 28262 0 handler93
> 28766 28262 0 handler64
> 28767 28262 0 handler85
> 28768 28262 0 handler74
> 28769 28262 0 handler65
> 28770 28262 0 handler66
> 28771 28262 0 handler78
> 28772 28262 0 handler86
> 28773 28262 0 handler87
> 28774 28262 0 handler97
> 28775 28262 0 handler88
> 28776 28262 0 handler56
> 28777 28262 0 handler76
> 28778 28262 0 handler67
> 28779 28262 0 handler60
> 28780 28262 0 handler68
> 28781 28262 0 revalidator75
> 28782 28262 0 revalidator57
> 28783 28262 0 revalidator89
> 28784 28262 0 revalidator69
> 28785 28262 0 revalidator54
> 28786 28262 0 revalidator90
> 28787 28262 0 revalidator55
> 28788 28262 0 revalidator58
> 28789 28262 0 revalidator59
> 28790 28262 0 revalidator70
> 28791 28262 0 revalidator94
> 28792 28262 0 revalidator91
> 28793 28262 0 revalidator72
> 28827 28262 4 pmd103
> 28829 28262 6 pmd102
> _______________________________________________
> dev mailing list
> dev@openvswitch.org
> http://openvswitch.org/mailman/listinfo/dev
>
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