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From Dean Gaudet <dgau...@hyperreal.org>
Subject cvs commit: apachen/src PORTING
Date Tue, 30 Sep 1997 23:24:51 GMT
dgaudet     97/09/30 16:24:50

  Modified:    src      PORTING
  Log:
  document new serialization stuff
  
  Revision  Changes    Path
  1.13      +24 -3     apachen/src/PORTING
  
  Index: PORTING
  ===================================================================
  RCS file: /export/home/cvs/apachen/src/PORTING,v
  retrieving revision 1.12
  retrieving revision 1.13
  diff -u -r1.12 -r1.13
  --- PORTING	1997/09/12 20:13:05	1.12
  +++ PORTING	1997/09/30 23:24:49	1.13
  @@ -205,17 +205,38 @@
   
        USE_FCNTL_SERIALIZED_ACCEPT:
         Define if the OS requires a mutex "lock" around the socket accept()
  -      call. Use fcntl() locking.
  +      call. Use fcntl() locking.  See htdocs/manual/misc/perf-tuning.html.
   
        USE_FLOCK_SERIALIZED_ACCEPT:
         Define if the OS requires a mutex "lock" around the socket accept()
         call. Use flock() locking (fcntl() is expensive on some OSs, esp.
  -      when using NFS).
  +      when using NFS).  See htdocs/manual/misc/perf-tuning.html.
  +
  +     USE_USLOCK_SERIALIZED_ACCEPT:
  +      Probably IRIX only: use uslock() to serialize, which is far faster
  +      on multiprocessor boxes (and far slower on uniprocessor, yay).
  +      See htdocs/manual/misc/perf-tuning.html.
  +
  +     USE_SYSVSEM_SERIALIZED_ACCEPT:
  +      Use System V semaphores to serialize accept.  These are problematic
  +      in that they won't be cleaned up if apache is kill -9d, and there's
  +      the potential of a CGI causing a denial of service attack if it's
  +      running as the same uid as apache (i.e. suexec is recommended on
  +      public servers).
  +      See htdocs/manual/misc/perf-tuning.html.
  +     
  +     USE_PTHREADS_SERIALIZED_ACCEPT:
  +      Use POSIX mutexes to serialize accept.
  +      See htdocs/manual/misc/perf-tuning.html.
  +
  +     SAFE_UNSERIALIZED_ACCEPT:
  +      It's safe to unserialize single-socket accept().
  +      See htdocs/manual/misc/perf-tuning.html.
   
        USE_LONGJMP:
         Define to use the longjmp() call instead of siglongjmp()
         (as well as setjmp() instead of sigsetjmp()).
  -     
  +
        USE_MMAP_FILES:
         Enable the use of mmap() for sending static files.
   
  
  
  

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