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there still is a prob with ide-scsi and dma
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user124
Tux's lil' helper
Tux's lil' helper


Joined: 02 May 2002
Posts: 86

PostPosted: Tue May 07, 2002 7:30 pm    Post subject: there still is a prob with ide-scsi and dma Reply with quote

hi,

i've searched the forum and did a
Code:
mknod -m 660 /dev/hdd b 22 64

to gain access to my ide-scsi-cdr via hdparm
the results:
Code:
campus root # hdparm /dev/hdd

/dev/hdd:
 HDIO_GET_MULTCOUNT failed: Input/output error
 I/O support  =  1 (32-bit)
 unmaskirq    =  1 (on)
 using_dma    =  1 (on)
 keepsettings =  0 (off)
 HDIO_GET_NOWERR failed: Input/output error
 readonly     =  0 (off)
 BLKRAGET failed: Input/output error
 HDIO_GETGEO failed: Invalid argument
 busstate     =  1 (on)


so dma should be ok for this device.
but: ripping a cd is really pain for my compi (athlon1200)
gkrellm shows approx. 80% systemload pus 20% user - speed stucks at 12x (it should reach nearly 30x)

on the other side burning a cd at 24x is no problem - nearly no additional load - the same with copying data from the cd - good speed and no load.

whats the problem with my box?

user124
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user124
Tux's lil' helper
Tux's lil' helper


Joined: 02 May 2002
Posts: 86

PostPosted: Thu May 09, 2002 9:43 am    Post subject: Reply with quote

8O
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Coogee
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Joined: 23 Apr 2002
Posts: 184
Location: E.U.

PostPosted: Thu May 09, 2002 10:21 am    Post subject: Reply with quote

12x = pain???
What ripping program do you use? (Cdparanoia is slower than cdda2wav but more accurate)
What maximum reading speed does your cd-rom have? (24x, 48x etc.)
These HDIO_GET errors are not normal. Which kernel do you use?
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user124
Tux's lil' helper
Tux's lil' helper


Joined: 02 May 2002
Posts: 86

PostPosted: Thu May 09, 2002 11:23 am    Post subject: Reply with quote

kernel is 2.4.19-r1
i think hte errors come from the fact that this is no hd - so there is no multicount, readahead or geometry (like cyl /sec /head)

the programs i used were both cdda2wav and cdparanoia. cdparanoia does afaik a multiread for verifying the data - so its slower. but cdda2wav schould read with max speed - it doesnt (the cd's i used were old - so no copy protection - but with no scratches).

the question is, why is the systemload 100% at ripping while copying normal data doesnt affect the system?
beside that, the normal copy is much faster than the ripping - so there is more data on the bus and this should produce load..

ive no idea :?

user124
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user124
Tux's lil' helper
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Joined: 02 May 2002
Posts: 86

PostPosted: Thu May 09, 2002 11:34 am    Post subject: Reply with quote

ps: its a Traxdata CDRW 321240 tx

ripping tests show a top speed of 31x (on M$)

user124
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Coogee
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Joined: 23 Apr 2002
Posts: 184
Location: E.U.

PostPosted: Thu May 09, 2002 5:11 pm    Post subject: Reply with quote

Sorry, no idea what's wrong.
I only can tell you that I've got about 40 % system load (AMD 1500+) and my max. speed is 9x with cdparanoia and a new 48x DVD-ROM (measurements done manually, because I don't trust any speed measurement programs).
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