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Date: Sat, 08 Aug 1998 14:25:19 +0900
From: Masachika ISHIZUKA <ishizuka@ish.org>
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Subject: [FreeBSD-users-jp 31602] Re: IDE DMA access benchmark
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> FreeBSD current $B$G(B IDE $B$N(B DMA $BE>Aw%Y%s%A%^!<%/$r$d$C$F$_$^$7$?!#(B
> DMA $BE>Aw(B ON $B$@$H0J2<$N$h$&$K%Y%s%A%^!<%/>e$O(B3$BG\$/$i$$B.$/$J$C$F$$$^$9!#(B

  $B@PDM!w?yJB$G$9!#(B

  $B5.=E$J>pJs$r$"$j$,$H$&$4$6$$$^$9!#(B
  $BAaB.!"$3$A$i$G$b(B

disk            wd0     at wdc0 drive 0 flags 0xa0ff
disk            wd1     at wdc0 drive 1 flags 0xa0ff

$B$N$h$&$K(B flags $B$rDI2C$7$F;n$7$F$_$^$7$?!#(B
  flags $B$,$J$$$H(B 5$B!A(B6MB/sec $B$@$C$?(B read/write $B$,(B 7$B!A(B10MB/sec
$B$K2~A1$5$l$^$7$?!#%I%i%$%V<+BN$O(B

wdc0 at 0x1f0-0x1f7 irq 14 on isa
wdc0: unit 0 (wd0): <IBM-DHEA-38451>, DMA, 32-bit, multi-block-16
wd0: 8063MB (16514064 sectors), 16383 cyls, 16 heads, 63 S/T, 512 B/S
wdc0: unit 1 (wd1): <IBM-DHEA-38451>, DMA, 32-bit, multi-block-16
wd1: 8063MB (16514064 sectors), 16383 cyls, 16 heads, 63 S/T, 512 B/S

$B$G$9$,!"(BK6-2 300 $B$r(B 66MHzx4.5 $B$G;H$C$F$$$k$&$($K(B mother board
$B$b:G?7$NJ*$G$O$J$/!"99$K(B SDRAM $B$8$c$J$/$F0BJ*$N(B SIMM $B$J$N$G!"(B
$B$3$l$@$1=P$l$P=<J,@($$$H;W$$$^$9!#(B
  $B0l1~!"(Bflags $BDI2C8e$N(B iozone $B$N7k2L$rE:IU$7$^$9!#!JDI2CA0$N(B
$BJ}$O<h$jK:$l$^$7$?$,!"(Bwrite $B$,(B 5MB/sec $B6/!"(Bread $B$,(B 6MB/sec $B6/(B
$B$G$7$?!#!K(B

--------
[$B4D6-(B]
  CPU: K6-2 300MHz (66MHz x 4.5)
  RAM: 192MB (32MB EDO-SIMM x 6) w/ 512KB PB-SRAM cache
  M/B: GigaGyte GA-586HX2 bios 2.8
  HDD: IBM-DHEA-38451

[$B<B9T7k2L(B]
  onion.ish.org[46]_% iozone 256

  Writing the 256 Megabyte file, 'iozone.tmp'...35.281250 seconds
  Reading the file...26.812500 seconds
 
  IOZONE performance measurements:
          7608445 bytes/second for writing the file
          10011578 bytes/second for reading the file
