On Fri, Mar 02, 2007 at 10:43:34AM +0100, Wojciech Puchar wrote: > >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 */
did anyone measure impact on various benchmark of this change? is 128k the optimal size for "nowadays computers" ? if we can squeeze more performance out of a typical box by just raising one define it would be great... roman _______________________________________________ email@example.com mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"