> > I have yes solved this issue and I have another test. ^^^ I haven't yet solved this issue
Sorry. > Now the mount is sync (no async) and the iozone includes > the -D flag. > Now the write performance boosts from 3MB/s to 30MB/s. > > --- > [EMAIL PROTECTED]:~ iozone -D -+q 1 -i 0 -i 1 -r 2048 -n 2048 -g 2G -Raceb > iozone.xls -f /mnt/nest.ifom-ieo-campus.it/iozone/file.tmp > > Iozone: Performance Test of File I/O > Version $Revision: 3.283 $ > Compiled for 32 bit mode. > Build: freebsd > > Contributors:William Norcott, Don Capps, Isom Crawford, Kirby Collins > Al Slater, Scott Rhine, Mike Wisner, Ken Goss > Steve Landherr, Brad Smith, Mark Kelly, Dr. Alain CYR, > Randy Dunlap, Mark Montague, Dan Million, > Jean-Marc Zucconi, Jeff Blomberg, Benny Halevy, > Erik Habbinga, Kris Strecker, Walter Wong. > > Run began: Mon Mar 17 11:06:28 2008 > > Using msync(MS_ASYNC) on mmap files > > Delay 1 seconds between tests enabled. > Record Size 2048 KB > > Using minimum file size of 2048 kilobytes. > Using maximum file size of 2097152 kilobytes. > > Excel chart generation enabled > Auto Mode > Include close in write timing > Include fsync in write timing > Command line used: iozone -D -+q 1 -i 0 -i 1 -r 2048 -n 2048 -g 2G > -Raceb iozone.xls -f /mnt/nest.ifom-ieo-campus.it/iozone/file.tmp > > Output is in Kbytes/sec > Time Resolution = 0.000004 seconds. > > Processor cache size set to 1024 Kbytes. > Processor cache line size set to 32 bytes. > > File stride size set to 17 * record size. > random > random bkwd record stride > KB reclen write rewrite read reread read > write read rewrite read > 2048 2048 49419 49755 629565 632905 > 4096 2048 7713 47431 625536 616224 > 8192 2048 28479 49564 630012 620276 > 16384 2048 26492 49515 631681 621500 > 32768 2048 13030 49572 631771 617552 > 65536 2048 24907 37586^C > --- > > Notice that now we have using msync(MS_ASYNC) on mmap files > (not a kernel expert so not sure if it is related to our problem). > Without the -D flag we get 3MB/s with iozone. > Thanks for you help! > > Valerio Daelli > _______________________________________________ freebsd-performance@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-performance To unsubscribe, send any mail to "[EMAIL PROTECTED]"
