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Re: "find" taking a long time
- From: Dave Trollope <dave dot trollope at worldnet dot att dot net>
- To: "Eric J. Holtman" <ejh at ericholtman dot com>
- Cc: cygwin at cygwin dot com
- Date: Wed, 26 Jun 2002 21:26:51 -0500
- Subject: Re: "find" taking a long time
- References: <email@example.com>
I can't be sure about this so someone here will probably correct me, but I
would guess there is some level of directory caching going here. When find
is run on the parent it steps through everything filling whatever buffers
the filesystem code uses. When you do it a second time, the sub directory
is still cached so it doesn't have to read the dir from disk again.
Try rebooting, and doing the find from the sub-dir BEFORE the find of the
parent and see what happens...
Just a guess.
"Eric J. Holtman" wrote:
> This is all on an NTFS formatted disk, and seems to happen with
> either the 1.3.9 or 1.3.11-3 cygwin.dll.
> I have a directory with 40000+ files, and I get the following behavior:
> b:/ejh/dnload $ time find . | wc
> 44198 44232 817239
> real 5m47.429s
> user 0m3.154s
> sys 0m25.956s
> If I try it in a subdirectory there, I get the following:
> b:/ejh/dnload/temp $ time find . | wc
> 20001 20001 160002
> real 0m1.001s
> user 0m0.230s
> sys 0m0.350s
> The only difference I note is that the subdirectories files are all
> very short names (certainly all 8.3), while the parent directory's
> files have very long names.
> Any clues?
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