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performance optimization: split all the members of dpvs connection into two groups for its initialization. #598

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performance optimization: split all the members of dpvs connection into two groups for its initialization. #598

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Commits on Aug 3, 2022

  1. ipvs: no need to zero the bytes of the newly allocated dpvs connection. 

    - TCP CPS can be increased by 10% for the single core with TCP flood traffic
  sent by hping3.
    zhuangyan committed Aug 3, 2022
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  2. dpvs: split all the members of dpvs connection into two groups for its 

    initialization and it's for the benefit of CPS.

a) Remove the operation of bezeroing all the members of dpvs connection within
   dp_vs_conn_alloc().

b) Each member of dpvs connection is initialized ONCE via dp_vs_conn_pre_init()
   or dp_vs_conn_new().

  - dp_vs_conn_pre_init() initializes all the members of one group as 0, but
    ack_mbuf.

  - dp_vs_conn_new() initializes all the members of the other group with the
    specific values.
    zhuangyan committed Aug 3, 2022
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