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AMD Athlon 64 3200
Slackware 64bits (Slamd64)
Kernel: 2.6.17-rc5 (I had the same problem with kernel 2.6.16)
I have 2 HDD:
1. 80GB IDE Maxtor 7200rpm (as primary master)
2. 250GB IDE Maxtor 7200rpm (as secundary master)
(same IDE cable)
My partitions are:
hda1 NTFS 10487.24
hda2 Linux ext3 10487.24
hda3 Linux ext3 40493.06
hdb1 Linux ext3 62512.13
hdb2 NTFS 62512.13
hdb3 Linux ext3 62512.13
hdb4 Linux ext3 62520.36
$ hdparm -Tt /dev/hda
Timing cached reads: 1212 MB in 2.00 seconds = 605.93 MB/sec
Timing buffered disk reads: 6 MB in 3.21 seconds = 1.87 MB/sec
$ hdparm -Tt /dev/hdb
Timing cached reads: 1512 MB in 2.02 seconds = 748.62 MB/sec
Timing buffered disk reads: 6 MB in 3.43 seconds = 1.75 MB/sec
The partition hda2 was formated by the system when I installed Linux at first time. The other Linux partitions, I formated like this:
mkfs.ext3 -m 0 /dev/hda3
mkfs.ext3 -m 0 -T largefiles4 /dev/hdb1
mkfs.ext3 -m 0 -T largefiles4 /dev/hdb3
mkfs.ext3 -m 0 -T largefiles4 /dev/hdb4
(because I use that space mainly for videos and movies).
I also tried without the "-m 0" but I had the same performance but 5% less space.
WHEN COPYING... (with cp command)
small files, I have no problem.
60MB file FROM:
hda3 to hda3: 1 min 10 sec (877 KB/s)
hda3 to hda2: 30 sec (2MB /s)
hda2 to hdb1: 35 sec (1.7MB /s)
hdb1 to hdb4: 40 sec (1.5MB /s)
hdb4 to hdb3: 35 sec (2MB /s)
hdb4 to hdb4: 40 sec (1.5MB /s)
hdb4 to hda2: 35 sec (2MB /s)
hda2 to hda2: 30 sec (2MB /s)
Sometimes, when moving large files I get up to 600 KB/s. (using kde file manager)
I don't know if these speeds are correct, but in windows copying largefiles, from one linux partition to other linux partition (using ext3 library on windows) it spend less time.
I don't care too much about the speed or time, but the main problem, I think, is that all my system slows down. For example, CPU usage during copy process is about from 30% to 90%, but I can not use normally my computer, like if I was executing a huge process (even if I use the "nice" command).