I tried the ata drivers on the weekend and they work fine, but seem a bit slow. I ran my usual buildworld script with the old and new drivers with these elapsed time results:
With the wd drivers 2:05:32 With the ata drivers 2:54:21 So that's nearly 40% longer for the ata case - is this all likely due to dma? /usr/obj is on drive 0, /usr/src is on drive 1 and they are mounted with soft-updates and noatime. The tests were not entirely pure as there was some other minor activity running on the machine as well. The ata dmesg output is: ata-pci0: <Intel PIIX4 IDE controller> rev 0x01 on pci0.4.1 ata0 at 0x01f0 irq 14 on ata-pci0 ata1 at 0x0170 irq 15 on ata-pci0 ... ad0: <FUJITSU MPC3084AT/6021> ATA-3 disk at ata0 as master ad0: 8063MB (16514064 sectors), 16383 cyls, 16 heads, 63 S/T, 512 B/S ad0: 16 secs/int, 0 depth queue ad1: <WDC AC36400L/09.09M08> ATA-4 disk at ata1 as master ad1: 6149MB (12594960 sectors), 13328 cyls, 15 heads, 63 S/T, 512 B/S ad1: 16 secs/int, 0 depth queue Waiting 2 seconds for SCSI devices to settle acd0: <MATSHITA CR-586/KS15> CDROM drive at ata0 as slave acd0: drive speed 5515KB/sec, 256KB cache acd0: supported read types: CD-R, CD-RW, CD-DA acd0: Audio: play, 256 volume levels acd0: Mechanism: ejectable tray acd0: Medium: no/blank disc inside, unlocked -- Kevin Street str...@iname.com To Unsubscribe: send mail to majord...@freebsd.org with "unsubscribe freebsd-current" in the body of the message
