mark at gaiahost.coop
Sat Feb 18 20:17:51 PST 2006
On Sat, Feb 18, 2006 at 11:06:57PM -0500, Mark Bucciarelli wrote:
> I'm curious how fast stat is.
> I generated a list of 200,000 file names
> # find / | head -200000 > files.statspeed
> then ran a million iterations of randomly picking a file name and
> stating it (see attached program).
Hmmm, 200,000 files 1,000,000 iterations. On avg, each file hit
five times. Uhh, that's not a good way to avoid caching. Doh.
Wow, caching is pretty amazing. I just reran the program, this time
using 500,000 file paths and only stat'ing 10,000 of them.
The first run was 99,059/second, the second was 188,239.
So I guess 100,000/second is about right on my system w/o cache.
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