Hi! I have UltraDMA/100 for /dev/hda on. I don't know why is CPU % so high. Bonnie: Warning: You have 501MB RAM, but you test with only 100MB datasize! Bonnie: This might yield unrealistically good results, Bonnie: for reading and seeking and writing. Bonnie 1.4: File './Bonnie.29824', size: 104857600, volumes: 1 Writing with putc()... done: 35403 kB/s 99.0 %CPU Rewriting... done: 323223 kB/s 100.0 %CPU Writing intelligently... done: 327449 kB/s 98.2 %CPU Reading with getc()... done: 44625 kB/s 99.6 %CPU Reading intelligently... done: 722867 kB/s 99.5 %CPU Seeker 1...Seeker 2...Seeker 3...start 'em...done...done...done... ---Sequential Output (nosync)--- ---Sequential Input-- --Rnd Seek- -Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --04k (03)- Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU athena 1* 100 35403 99.0327449 98.2 323223 100 44625 99.6722867 99.5 109259.8 188 Mitja