Mailinglist Archive: packet-writing (5 mails)
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Re: ko/s, time to format a cdrw
- From: Le Gluon du Net <legluondunet@xxxxxxxxxxx>
- Date: Fri, 30 Sep 2005 23:42:52 +0000 (UTC)
- Message-id: <433DCDAD.3070406@xxxxxxxxxxx>
Johnny Casey a écrit :
Good, this is my results:
# time dd if=/dev/zero of=/dev/null bs=4k count=128000
128000+0 enregistrements lus.
128000+0 enregistrements écrits.
524288000 bytes transferred in 0,260783 seconds (2010438538 bytes/sec)
real 0m0.262s
user 0m0.060s
sys 0m0.192s
grrr....
# time dd if=/dev/zero of=/dev/pktcdvd/0 bs=4K count=128000
128000+0 enregistrements lus.
128000+0 enregistrements écrits.
524288000 bytes transferred in 243,342430 seconds (2154528 bytes/sec)
real 4m3.344s
user 0m0.092s
sys 0m1.376s
It looks like ok doctor?
to quick format a 700 mega cdrw (12x) I obtain this:
time cdrwtool -t12 -q -d /dev/hdc
setting speed to 12
using device /dev/hdc
1312KB internal buffer
setting write speed to 12x
Settings for /dev/hdc:
Fixed packets, size 32
Mode-2 disc
I'm going to do a quick setup of /dev/hdc. The disc is going to be blanked and formatted with one big track. All data on the device will be lost!! Press CTRL-C to cancel now.
ENTER to continue.
Initiating quick disc blank
Disc capacity is 295264 blocks (590528KB/576MB)
Formatting track
start=0, blocks=16, type=RESERVED
start=16, blocks=3, type=VRS
start=19, blocks=237, type=USPACE
start=256, blocks=1, type=ANCHOR
start=257, blocks=31, type=USPACE
start=288, blocks=32, type=PVDS
start=320, blocks=32, type=LVID
start=352, blocks=32, type=STABLE
start=384, blocks=1024, type=SSPACE
start=1408, blocks=293568, type=PSPACE
start=294976, blocks=31, type=USPACE
start=295007, blocks=1, type=ANCHOR
start=295008, blocks=160, type=USPACE
start=295168, blocks=32, type=STABLE
start=295200, blocks=32, type=RVDS
start=295232, blocks=31, type=USPACE
start=295263, blocks=1, type=ANCHOR
Writing UDF structures to disc
Quick setup complete!
real 9m0.816s
user 0m0.000s
sys 0m0.008s
It looks good!?
/dev/hdc:
IO_support = 0 (default 16-bit)
unmaskirq = 0 (off)
using_dma = 1 (on)
keepsettings = 0 (off)
readonly = 0 (off)
readahead = 256 (on)
HDIO_GETGEO failed: Invalid argument
# hdparm /dev/hda1 (/) (hd1)
/dev/hda1:
multcount = 16 (on)
IO_support = 0 (default 16-bit)
unmaskirq = 0 (off)
using_dma = 1 (on)
keepsettings = 0 (off)
readonly = 0 (off)
readahead = 256 (on)
geometry = 16383/255/63, sectors = 40965687, start = 63
# hdparm /dev/hda2 (hd1)
/dev/hda2:
multcount = 16 (on)
IO_support = 0 (default 16-bit)
unmaskirq = 0 (off)
using_dma = 1 (on)
keepsettings = 0 (off)
readonly = 0 (off)
readahead = 256 (on)
geometry = 16383/255/63, sectors = 200282355, start = 40965750
# hdparm /dev/hdb1 (hd2)
/dev/hdb1:
multcount = 16 (on)
IO_support = 0 (default 16-bit)
unmaskirq = 0 (off)
using_dma = 1 (on)
keepsettings = 0 (off)
readonly = 0 (off)
readahead = 256 (on)
geometry = 19929/255/63, sectors = 320159322, start = 63
# hdparm /dev/hdd (dvd reader)
/dev/hdd:
IO_support = 0 (default 16-bit)
unmaskirq = 0 (off)
using_dma = 1 (on)
keepsettings = 0 (off)
readonly = 0 (off)
readahead = 256 (on)
HDIO_GETGEO failed: Invalid argument
in /var/log/syslog I have some strange messages:
Sep 30 23:58:40 MyLittleLinuxBox kernel: pktcdvd: Unknown ioctl for pktcdvd0 (5331)
or
Oct 1 00:43:20 MyLittleLinuxBox kernel: udf: udf_count_free failed
and in fstab I mount with this line:
/dev/pktcdvd/0 /mnt/cdudf auto sync,noauto,noatime,rw,users,iocharset=iso8859-15 0 0
yes, this two process are running
Thanks again for your help Johnny.
Romain.
No, I'm not running my Knoppix from a cd. I installed it more than one year ago. With the lot of updates, it's now more a debian testing/unstable.
Are you running Knoppix from the CD?
What drive is Knoppix using, if so?
If Knoppix is running from CD and is at /dev/hdd, then you might justnot at all. My installation is a normal installation, not a livecd...
see the 3KB/s speed you are getting. The same might be true if you have
a hard disk (with the files on it) at /dev/hda and knoppix at /dev/hdb.
The reason would be that the two drives would be in contention for theI have two hard disks on the firt bus, and two dvd on the other.
IDE bus (/dev/hda and /dev/hdb on one bus and /dev/hdc and /dev/hdd on
another, etc. (Most computers come standard with 2 buses, but more can
be added with add-on cards)).
On top of that, Knoppix (or any LiveCDI have no swap but 1giga ram.
system) can put a lot of strain on a system. Memory helps there. How
much swap/RAM do you have available?
If the above is not the case, from where are the files being copied? (Alol
serial line ;)
the motherboard
Also, what connects your drives in your the computer? (The motherboard?
A dinky, ancient ISA multi I/O card? A sound card? A PCI card? A mix?)
$ time dd if=/dev/zero of=/dev/null bs=4k count=128000
128000+0 records in
128000+0 records out
524288000 bytes transferred in 0.100023 seconds (5241670563 bytes/sec)
real 0m0.115s
user 0m0.016s
sys 0m0.072s
Good, this is my results:
# time dd if=/dev/zero of=/dev/null bs=4k count=128000
128000+0 enregistrements lus.
128000+0 enregistrements écrits.
524288000 bytes transferred in 0,260783 seconds (2010438538 bytes/sec)
real 0m0.262s
user 0m0.060s
sys 0m0.192s
grrr....
# time dd if=/dev/zero of=/dev/pktcdvd/0 bs=4K count=128000
128000+0 enregistrements lus.
128000+0 enregistrements écrits.
524288000 bytes transferred in 243,342430 seconds (2154528 bytes/sec)
real 4m3.344s
user 0m0.092s
sys 0m1.376s
It looks like ok doctor?
to quick format a 700 mega cdrw (12x) I obtain this:
time cdrwtool -t12 -q -d /dev/hdc
setting speed to 12
using device /dev/hdc
1312KB internal buffer
setting write speed to 12x
Settings for /dev/hdc:
Fixed packets, size 32
Mode-2 disc
I'm going to do a quick setup of /dev/hdc. The disc is going to be blanked and formatted with one big track. All data on the device will be lost!! Press CTRL-C to cancel now.
ENTER to continue.
Initiating quick disc blank
Disc capacity is 295264 blocks (590528KB/576MB)
Formatting track
start=0, blocks=16, type=RESERVED
start=16, blocks=3, type=VRS
start=19, blocks=237, type=USPACE
start=256, blocks=1, type=ANCHOR
start=257, blocks=31, type=USPACE
start=288, blocks=32, type=PVDS
start=320, blocks=32, type=LVID
start=352, blocks=32, type=STABLE
start=384, blocks=1024, type=SSPACE
start=1408, blocks=293568, type=PSPACE
start=294976, blocks=31, type=USPACE
start=295007, blocks=1, type=ANCHOR
start=295008, blocks=160, type=USPACE
start=295168, blocks=32, type=STABLE
start=295200, blocks=32, type=RVDS
start=295232, blocks=31, type=USPACE
start=295263, blocks=1, type=ANCHOR
Writing UDF structures to disc
Quick setup complete!
real 9m0.816s
user 0m0.000s
sys 0m0.008s
It looks good!?
What does hdparm show?ok, run as root:
/dev/hdc:
IO_support = 0 (default 16-bit)
unmaskirq = 0 (off)
using_dma = 1 (on)
keepsettings = 0 (off)
readonly = 0 (off)
readahead = 256 (on)
HDIO_GETGEO failed: Invalid argument
# hdparm /dev/hda1 (/) (hd1)
/dev/hda1:
multcount = 16 (on)
IO_support = 0 (default 16-bit)
unmaskirq = 0 (off)
using_dma = 1 (on)
keepsettings = 0 (off)
readonly = 0 (off)
readahead = 256 (on)
geometry = 16383/255/63, sectors = 40965687, start = 63
# hdparm /dev/hda2 (hd1)
/dev/hda2:
multcount = 16 (on)
IO_support = 0 (default 16-bit)
unmaskirq = 0 (off)
using_dma = 1 (on)
keepsettings = 0 (off)
readonly = 0 (off)
readahead = 256 (on)
geometry = 16383/255/63, sectors = 200282355, start = 40965750
# hdparm /dev/hdb1 (hd2)
/dev/hdb1:
multcount = 16 (on)
IO_support = 0 (default 16-bit)
unmaskirq = 0 (off)
using_dma = 1 (on)
keepsettings = 0 (off)
readonly = 0 (off)
readahead = 256 (on)
geometry = 19929/255/63, sectors = 320159322, start = 63
# hdparm /dev/hdd (dvd reader)
/dev/hdd:
IO_support = 0 (default 16-bit)
unmaskirq = 0 (off)
using_dma = 1 (on)
keepsettings = 0 (off)
readonly = 0 (off)
readahead = 256 (on)
HDIO_GETGEO failed: Invalid argument
$ ls -ltr /var/log
in /var/log/syslog I have some strange messages:
Sep 30 23:58:40 MyLittleLinuxBox kernel: pktcdvd: Unknown ioctl for pktcdvd0 (5331)
or
Oct 1 00:43:20 MyLittleLinuxBox kernel: udf: udf_count_free failed
and in fstab I mount with this line:
/dev/pktcdvd/0 /mnt/cdudf auto sync,noauto,noatime,rw,users,iocharset=iso8859-15 0 0
and is syslogd (and klogd) running?
yes, this two process are running
Thanks again for your help Johnny.
Romain.
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