Subject: re: namei caching of newly created files?
To: Eduardo Horvath <eeh@NetBSD.org>
From: matthew green <mrg@eterna.com.au>
List: tech-kern
Date: 01/22/2005 21:52:34
   On Thu, Jan 20, 2005 at 12:55:22AM +0100, Havard Eidnes wrote:
   > pm>run
   > Creating files...Done
   > Performing transactions..........Done
   > Deleting files...Done
   > Time:
   >         71 seconds total
   >         57 seconds of transactions (877 per second)
   > 
   > Files:
   >         45093 created (635 per second)
   >                 Creation alone: 20000 files (2500 per second)
   >                 Mixed with transactions: 25093 files (440 per second)
   >         24789 read (434 per second)
   >         25184 appended (441 per second)
   >         45093 deleted (635 per second)
   >                 Deletion alone: 20186 files (3364 per second)
   >                 Mixed with transactions: 24907 files (436 per second)
   
   Is the performance of manipulating a single direcory with 45,000 entries
   even something we care about?  Who would ever put 45,000 files into a
   single directory?  Who would even put 100 files into a directory if getting
   a directory listing takes two or more screens just to display?


my MH spam folder for the past 12.5 months contains approx 60000 files.

(time to clear it up.)