Doug Cutting wrote:
Andrzej Bialecki wrote:
The advantage of using native lib is that you avoid fork/exec cost, and I guess during the lifetime of NutchFS there would be quite a few calls to the native utilities... I'm afraid this would give a poor performance. Also, on different Unixes (and on Cygwin) command-line parameters for many FS-specific utilities are different.
I still would like to try to first make it work with just shell commands. Yes, it will be slower than native, but I don't think we should need to perform these operations so frequently that this will be a big issue. Command-line options could be an problem too, but let's give it a try first. If these are a problem, we could simply require that the GNU versions are used by, e.g., examining the output of 'mv --version' and 'df --version'. The GNU utils are the default on lots of Unix implementations, and will run on the rest.
Hmmm. Yes, it's worth a try, if only for the simplicity's sake... If you come up with a skeleton I can help filling in the details for RedHat, Cygwin and FreeBSD.
BTW. in the *BSD camp the suggestion to use GNU versions of basic OS utilities would be frowned upon by most admins... ;-)
-- Best regards, Andrzej Bialecki
------------------------------------------------- Software Architect, System Integration Specialist CEN/ISSS EC Workshop, ECIMF project chair EU FP6 E-Commerce Expert/Evaluator ------------------------------------------------- FreeBSD developer (http://www.freebsd.org)
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