ATA on the move.....Answer to SCSI 3wks back

From: Andre Hedrick (andre@linux-ide.org)
Date: Fri May 19 2000 - 00:44:28 EDT

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FYI, and you can not repeat this at home yet.........

File './Bonnie.321', size: 104857600, volumes: 1
Writing with putc()...done
Rewriting...done
Writing intelligently...done
Reading with getc()...done
Reading intelligently...done
Seeker 1...Seeker 2...Seeker 3...start 'em...done...done...done...
              -------Sequential Output-------- ---Sequential Input-- --Random--
              -Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
       1* 100 13796 59.7 19763 13.5 8375 9.9 6669 33.2 25810 16.1 217.2 1.6

File './Bonnie.325', size: 268435456, volumes: 1
Writing with putc()...done
Rewriting...done
Writing intelligently...done
Reading with getc()...done
Reading intelligently...done
Seeker 1...Seeker 2...Seeker 3...start 'em...done...done...done...
              -------Sequential Output-------- ---Sequential Input-- --Random--
              -Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
       1* 256 14848 64.2 15999 10.4 7924 9.7 7372 36.4 25249 15.6 131.0 1.6

hdparm -t /dev/hdc & hdparm -t /dev/hdc &
hdparm -t /dev/hdc & hdparm -t /dev/hdc &

64 MB in 3.77 seconds = 16.98 MB/sec
64 MB in 3.78 seconds = 16.93 MB/sec
64 MB in 3.80 seconds = 16.84 MB/sec
64 MB in 3.81 seconds = 16.80 MB/sec
-------------------------------------
Sum of throughput 67.55 MB/sec

hdparm -t /dev/hdc & hdparm -t /dev/hdc &
hdparm -t /dev/hdc & hdparm -t /dev/hdc &
hdparm -t /dev/hdc & hdparm -t /dev/hdc &
hdparm -t /dev/hdc & hdparm -t /dev/hdc &

64 MB in 6.79 seconds = 9.43 MB/sec
64 MB in 6.82 seconds = 9.38 MB/sec
64 MB in 6.85 seconds = 9.34 MB/sec
64 MB in 6.82 seconds = 9.38 MB/sec
64 MB in 6.76 seconds = 9.47 MB/sec
64 MB in 6.80 seconds = 9.41 MB/sec
64 MB in 7.93 seconds = 8.07 MB/sec
64 MB in 7.14 seconds = 8.96 MB/sec
-------------------------------------
Sum of throughput 73.44 MB/sec

Look out SCSI, I am going to catch up soon......

Andre Hedrick
The Linux ATA/IDE guy

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Next message: Alex Ivchenko: "Sharing memory between user and kernel spaces [Re: copy_to/from_user and a bottom half]"
Previous message: Pierre Cyr: "computer hangs when dd'ing from hdb to a file"
Next in thread: I Lee Hetherington: "Re: ATA on the move.....Answer to SCSI 3wks back"
Reply: I Lee Hetherington: "Re: ATA on the move.....Answer to SCSI 3wks back"
Reply: Mark Hahn: "Re: ATA on the move.....Answer to SCSI 3wks back"
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