Thanks, tye, I've added a dosglob test case to the benchmark. I found that our network performance varies widely, and dosglob and readdir were roughly comparable on most runs. Either one would be preferable to using backticks, of course.

I didn't realize that DosGlob's version was so different, performance-wise. I figured it was mostly for the extended wildcard support and case-sensitivity issues. The scripts we write must be portable, but since it's available and works on our older Solaris setups, we can use that here, too.