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From: Robert Watson <rwatson@FreeBSD.org>
Date: Sun, 1 May 2005 11:11:39 +0000 (UTC)
To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org,
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X-FreeBSD-CVS-Branch: HEAD
Subject: cvs commit: src/sys/netinet tcp_usrreq.c
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rwatson     2005-05-01 11:11:39 UTC

  FreeBSD src repository

  Modified files:
    sys/netinet          tcp_usrreq.c 
  Log:
  Slide unlocking of the tcbinfo lock earlier in tcp_usr_send(), as it's
  needed only for implicit connect cases.  Under load, especially on SMP,
  this can greatly reduce contention on the tcbinfo lock.
  
  NB: Ambiguities about the state of so_pcb need to be resolved so that
  all use of the tcbinfo lock in non-implicit connection cases can be
  eliminated.
  
  Submited by:    Kazuaki Oda <kaakun at highway dot ne dot jp>
  
  Revision  Changes    Path
  1.118     +13 -2     src/sys/netinet/tcp_usrreq.c