westonpace commented on issue #34566:
URL: https://github.com/apache/arrow/issues/34566#issuecomment-1474423947

   Both Linux and Windows have their own file caches.  Pyarrow does not do any 
caching of its own.
   
   How exactly are you reading the files?  Are you looping over a list of files 
and calling `read_table` on each one?  Or are you using some method to read an 
entire dataset?  Is it possible the initial delay is the time it takes to list 
and discover all the files?


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