On 5/3/07, Frank Hofmann <[EMAIL PROTECTED]> wrote:
I'm not quite sure what this test should show ?
I didn't try the test myself... but I think what it shows is a possible problem that turning compression can hang a machine. Rayson
Compressing random data is the perfect way to generate heat. After all, compression working relies on input entropy being low. But good random generators are characterized by the opposite - output entropy being high. Even a good compressor, if operated on a good random generator's output, will only end up burning cycles, but not reducing the data size. Hence, is the request here for the compressor module to 'adapt', kind of first-pass check the input data whether it's sufficiently low-entropy to warrant a compression attempt ? If not, then what ? FrankH.
_______________________________________________ zfs-discuss mailing list [email protected] http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
