[Gllug] Number or files per directory

[Richard Jones]

On Sun, Jun 06, 2004 at 04:15:12PM +0100, Dylan wrote:
> Hi All,
> 
> What is the point, with ext3, where the number of files in a directory 
> starts having an impact on performance or storage efficiency. I realise 
> that the more files the longer a directory scan will take, but is there 
> anything like the FAT issue of needing a second directory listing for 
> over a certain limiting number of files?

My experience, based on a maildir server I ran a few years ago, so
things may have changed now, is that over 10,000 files in a directory
and you'll start to see a slowdown.  Over 100,000 files and things
tend to grind to a halt.  There is no practical limit to the number of
files you can have in a directory, however.

Rich.

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