Re: Move bookworm system from SSD to NVME

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