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Re: New stat stuff (was [PATCH] improve performance of stat() ope rations (e.g. ls -lR ))
- From: Christopher Faylor <cgf at redhat dot com>
- To: cygwin-patches at cygwin dot com
- Date: Tue, 28 May 2002 22:25:37 -0400
- Subject: Re: New stat stuff (was [PATCH] improve performance of stat() ope rations (e.g. ls -lR ))
- References: <FE045D4D9F7AED4CBFF1B3B813C853376762B1@mail.sandvine.com>
- Reply-to: cygwin-patches at cygwin dot com
On Tue, May 28, 2002 at 09:58:52PM -0400, Don Bowman wrote:
>
>So I've performed a mini-benchmark of Chris' changes.
>
>I did a ls -lR >/dev/null of the cygwin source tree on my
>notebook.
>
>Baseline (current setup.exe install): 1m14.9s
>'statquery' patch I sent earlier: 4.081s
>Current CVS tree: 3.718s
>Current CVS tree w/ -E switch to mount: 3.711s
>Current CVS tree w/ -X switch to mount: 3.716s
>
>Not all that scientific, I ran each twice, took the 2nd timing.
>So, looks good, excellent work. I still don't see any
>difference on the -E or the -X tho'.
That has got to mean that there's something wrong in the stat
logic. I didn't do anything to speed up the normal case, AFAIK,
unless you're doing this on a FAT/FAT32 partition.
cgf