916 False-sharing in TCP hash buckets, plus size increase
        (originally Joyent OS-299 tcp_bindi() hash lock contention affects
        TCP client performance)

*** 19,28 ****
--- 19,29 ----
   * CDDL HEADER END
   */
  
  /*
   * Copyright (c) 1991, 2010, Oracle and/or its affiliates. All rights reserved.
+  * Copyright (c) 2011, Joyent Inc. All rights reserved.
   */
  /* Copyright (c) 1990 Mentat Inc. */
  
  #include <sys/types.h>
  #include <sys/stream.h>
*** 238,248 ****
  #define TIDUSZ  4096    /* transport interface data unit size */
  
  /*
   * Size of acceptor hash list.  It has to be a power of 2 for hashing.
   */
! #define TCP_ACCEPTOR_FANOUT_SIZE                256
  
  #ifdef  _ILP32
  #define TCP_ACCEPTOR_HASH(accid)                                        \
                  (((uint_t)(accid) >> 8) & (TCP_ACCEPTOR_FANOUT_SIZE - 1))
  #else
--- 239,249 ----
  #define TIDUSZ  4096    /* transport interface data unit size */
  
  /*
   * Size of acceptor hash list.  It has to be a power of 2 for hashing.
   */
! #define TCP_ACCEPTOR_FANOUT_SIZE                512
  
  #ifdef  _ILP32
  #define TCP_ACCEPTOR_HASH(accid)                                        \
                  (((uint_t)(accid) >> 8) & (TCP_ACCEPTOR_FANOUT_SIZE - 1))
  #else