Re: (S)ATA performance in FBSD 6.2/7.0

another while the box didn't do anything else than copying. I watched the copy process via 'systat -vmstat 1' and realized, that the value of 'KB/t' never go byond 128 (128kb buffer limit?). But more frustrating, I never got

what's wrong? FreeBSD uses 128k limit by default.

edit /usr/src/sys/sys/param.h

and change

#define MAXPHYS (128 * 1024) /* max raw I/O transfer size */


to say

#define MAXPHYS (1024 * 1024) /* max raw I/O transfer size */

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