ru.linux

 
 - RU.LINUX ---------------------------------------------------------------------
 From : Vladimir Bormotov                    2:5020/400     04 Dec 2001  02:35:21
 To : "Serge N. Pokhodyaev"
 Subject : Re: ReiserFS
 -------------------------------------------------------------------------------- 
 

 
    Hi, Serge!
 
 >>>>> "SNP" == Serge N Pokhodyaev
 >>>>> <Serge.N.Pokhodyaev@f1838.n5020.z2.fidonet.org> writes:
 VB>>  ..поведение ext3 "как у всех" заказывается отдельным параметром при
 VB>>  монтировании ;)
 
  SNP> Что значит "как у всех"?
   
  http://www.redhat.com/support/wpapers/redhat/ext3/
  
  =====
 Speed
    Despite writing some data more than once, ext3 is often faster (higher
    throughput) than ext2 because ext3's journaling optimizes hard drive
    head motion. You can choose from three journaling modes to optimize
    speed, optionally choosing to trade off some data integrity.
 
         One mode, data=writeback, limits the data integrity guarantees,
         allowing old data to show up in files after a crash, for a
         potential increase in speed under some circumstances. (This mode,
         which is the default journaling mode for most journaling file
         systems, essentially provides the more limited data integrity
         guarantees of the ext2 file system and merely avoids the long file
         system check at boot time.)
 
         The second mode, data=ordered (the default mode), guarantees that
         the data is consistent with the file system; recently-written files
         will never show up with garbage contents after a crash.
 
         The last mode, data=journal, requires a larger journal for
         reasonable speed in most cases and therefore takes longer to
         recover in case of unclean shutdown, but is sometimes faster for
         certain database operations.
  =====
  
  ключевые слова:
  
   "This mode, which is the default journaling mode for most journaling file
   systems"
  
  
 -- 
    Bor.
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  * Origin: BorHomeLand (2:5020/400)
 
 

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