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Date:      08 Mar 1999 11:50:06 -0500
From:      Kevin Street <street@iname.com>
To:        current@FreeBSD.org
Subject:   ATA/ATAPI speed test
Message-ID:  <87r9r09b9d.fsf@mired.eh.local>

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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
street@iname.com


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