2008/5/23 Joerg Schilling <[EMAIL PROTECTED]>: > Thomas Backman <[EMAIL PROTECTED]> wrote: > >> I grabbed OpenSolaris 2008.05 to see if disk performance had gotten any >> better since my last try, which was Solaris 10 (8/07 IIRC). It had, but >> still not good enough. >> >> I have four disks, three IDE and one SATA. My highly scientific benchmark >> was: >> dd if=/dev/... of=/dev/null bs=128k count=4000 >> >> Under OpenSolaris, this took: 19.808, 18.65, 14.274 and 7.6 seconds, >> respectively. >> On Linux: 16.58, 11.27, 9.4 and 7.63 seconds. >> On average, the transfer rate under Linux works out to be about 35% faster >> (avg. 35MB/s vs 47.4MB/s). > > Did you use buffered or raw devices on Solaris? > > Note that Linux does not have raw devices and thus comparing is hard in > special > if you use small transfer sizes....
Joerg, Linux does have raw device support. In fact, it's often used by Oracle and DB2 setups: http://publib.boulder.ibm.com/infocenter/db2luw/v8/index.jsp?topic=/com.ibm.db2.udb.doc/admin/t0004971.htm Perhaps you mean a different kind of raw device? -- Shawn Walker "To err is human -- and to blame it on a computer is even more so." - Robert Orben _______________________________________________ opensolaris-discuss mailing list opensolaris-discuss@opensolaris.org
