CPU high load native_queued_spin_lock

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I'm using Debian 9(stretch edition) kernel 4.9., hp dl385 g7 server with 32 cpu cores. NIC queues are tied to processor cores. Server is shaping traffic (iproute2 and htb discipline + skbinfo + ipset + ifb) and filtering some rules by iptables.



At that moment, when traffic goes up about 1gbit/s cpu is very high loaded. Perf tool tells me that kernel module native_queued_spin_lock_slowpath loading cpu about 40%.



Who knows how to find the problem?










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    up vote
    2
    down vote

    favorite












    I'm using Debian 9(stretch edition) kernel 4.9., hp dl385 g7 server with 32 cpu cores. NIC queues are tied to processor cores. Server is shaping traffic (iproute2 and htb discipline + skbinfo + ipset + ifb) and filtering some rules by iptables.



    At that moment, when traffic goes up about 1gbit/s cpu is very high loaded. Perf tool tells me that kernel module native_queued_spin_lock_slowpath loading cpu about 40%.



    Who knows how to find the problem?










    share|improve this question

























      up vote
      2
      down vote

      favorite









      up vote
      2
      down vote

      favorite











      I'm using Debian 9(stretch edition) kernel 4.9., hp dl385 g7 server with 32 cpu cores. NIC queues are tied to processor cores. Server is shaping traffic (iproute2 and htb discipline + skbinfo + ipset + ifb) and filtering some rules by iptables.



      At that moment, when traffic goes up about 1gbit/s cpu is very high loaded. Perf tool tells me that kernel module native_queued_spin_lock_slowpath loading cpu about 40%.



      Who knows how to find the problem?










      share|improve this question















      I'm using Debian 9(stretch edition) kernel 4.9., hp dl385 g7 server with 32 cpu cores. NIC queues are tied to processor cores. Server is shaping traffic (iproute2 and htb discipline + skbinfo + ipset + ifb) and filtering some rules by iptables.



      At that moment, when traffic goes up about 1gbit/s cpu is very high loaded. Perf tool tells me that kernel module native_queued_spin_lock_slowpath loading cpu about 40%.



      Who knows how to find the problem?







      debian networking linux-kernel cpu load






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      edited Oct 9 '17 at 16:42









      Egor Vasilyev

      1,792129




      1,792129










      asked Oct 9 '17 at 15:24









      Sergey K.

      212




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