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   MSGID:  0a543bd9   
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   PID: SoupGate-Win32 v1.05   
   On 2024-08-03 03:27, Lawrence D'Oliveiro wrote:   
   > On Fri, 2 Aug 2024 15:12:57 +0100, The Natural Philosopher wrote:   
   >   
   >> SSDS/NVM have their own internal  caching.   
   >   
   > True for all drives, unfortunately.   
   >   
   > It’s bloody stupid, because the drive caching is on the wrong side of the   
   > drive interface. Better to leave it to the OS, which can use main RAM for   
   > its filesystem caching, on the fast side of that drive interface.   
   >   
   > When a drive says to the OS driver “write is done”, it should mean   
   “write   
   > has gone to actual persistent storage”, not “write is in my cache”.   
      
      
   I think they cause grief in the postgres mail lists some 15-20 years ago.   
   They were called 'lying IDE-disks' and were not popular in that crowd.   
      
      
   --   
   /Björn   
      
   --- SoupGate-Win32 v1.05   
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