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<H2><A NAME="s6">6.</A> <A HREF="DPT-Hardware-RAID.html#toc6">EATA DMA $B%I%i%$%P$N5!G=(B</A></H2>
<P>$B$3$N%;%/%7%g%s$G$O!"(BLinux $B$G(B RAID $B$N@_Dj$r%A%'%C%/$G$-$k%3%^%s%I$N(B
$B$$$/$D$+$r>R2p$7$^$9!#(Beata_dma $B%I%i%$%P$r;2>H$G$-$k$J$i!"B>$N%I%i%$%P(B
$B$N%A%'%C%/$K$b$3$NJ}K!$,;H$($^$9!#(B</P>
<P> $B%I%i%$%P$N@_Dj$r3NG'$9$k>l9g!"$3$N$h$&$KF~NO$7$F$/$@$5$$!#(B</P>
<P>
<BLOCKQUOTE><CODE>
<PRE>
% cat /proc/scsi/eata_dma/N
</PRE>
</CODE></BLOCKQUOTE>
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<P>N $B$O%3%s%H%m!<%i$r<($9%[%9%H(B ID $B$G$9!#<!$N$h$&$J7k2L$K$J$k$O$:$G$9!#(B</P>
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<BLOCKQUOTE><CODE>
<PRE>
EATA (Extended Attachment) driver version: 2.59b
queued commands: 353969
processed interrupts: 353969
scsi0 : HBA PM2144UW
Firmware revision: v07L.Y
Hardware Configuration:
IRQ: 11, level triggered
DMA: BUSMASTER
CPU: MC68020 20MHz
Base IO : 0xef90
Host Bus: PCI
SCSI Bus: WIDE Speed: 10MB/sec.
SCSI channel expansion Module: not present
SmartRAID hardware: present.
Type: integrated
Max array groups: 7
Max drives per RAID 0 array: 7
Max drives per RAID 3/5 array: 7
Cache Module: present.
</PRE>
</CODE></BLOCKQUOTE>
<BLOCKQUOTE><CODE>
<PRE>
Type: 0
Bank0: 16MB without ECC
Bank1: 0MB without ECC
Bank2: 0MB without ECC
Bank3: 0MB without ECC
Timer Mod.: present
NVRAM : present
SmartROM : enabled
Alarm : on
Host<->Disk command statistics:
Reads: Writes:
1k: 0 0
2k: 0 0
4k: 0 0
8k: 0 0
16k: 0 0
32k: 0 0
64k: 0 0
128k: 0 0
256k: 0 0
512k: 0 0
1024k: 0 0
>1024k: 0 0
Sum : 0 0
</PRE>
</CODE></BLOCKQUOTE>
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<P> $B$5$i$K>\$7$$>uBV$r$_$?$$$J$i!"$3$N$h$&$KF~NO$7$F$/$@$5$$!#(B</P>
<P>
<BLOCKQUOTE><CODE>
<PRE>
% echo "eata_dma latency" > /proc/scsi/eata_dma/N
</PRE>
</CODE></BLOCKQUOTE>
</P>
<P> $B<B9T$7$?$i!"<!$K!"(B</P>
<P>
<BLOCKQUOTE><CODE>
<PRE>
% cat /proc/scsi/eata_dma/N
</PRE>
</CODE></BLOCKQUOTE>
</P>
<P>$B$3$l$G$b$C$H>\$7$$>uBV$,$o$+$j$^$9!#(B</P>
<P>$B$3$N5!G=$rDd;_$7$?$$$J$i!"(B</P>
<P>
<BLOCKQUOTE><CODE>
<PRE>
% echo "eata_dma nolatency" > /proc/scsi/eata_dma/N
</PRE>
</CODE></BLOCKQUOTE>
$B$HF~NO$7$F$/$@$5$$!#(B</P>
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