Copy files from partition to partition too slow, SATA hard disk.What should I do£¿
 

I have 3 partitions in linux, all reiser format.
Copy small file is ok. Copy big files from partition to partiton, like 1.4G dvdrip movie :
It's about 11 MB/s at beginning , soon the speed slow down , the slowest speed is about 3.4 MB/s, most of time the copy speed is 5 Mb/s .
This speed is very slow. What should I do ?
My hard disk is 80G 7200rpm sata.

Hello!

The slow speed results from copying from partition to partition on a single disk.

Greetings

but much slower than do copy in windows.

copy 1.4G in linux Suse10.0, about 3 mins.
in windows, less than 1:20.

on SATA SuSE 9.3 (XFS) copying 3.4 GB on the same disk between two partitions took 2:50
It would depend on FS, controler (SIl is worse than nVidia), other disk intensive processes

su
RLee:/home/lee # hdparm -Tt /dev/sda

/dev/sda:
Timing cached reads: 2060 MB in 2.00 seconds = 1029.94 MB/sec
Timing buffered disk reads: 42 MB in 3.04 seconds = 13.81 MB/sec

how about yours?

hdparm -tT /dev/sda

/dev/sda:
Timing cached reads: 3508 MB in 2.00 seconds = 1753.39 MB/sec
Timing buffered disk reads: 170 MB in 3.00 seconds = 56.66 MB/sec

This is not really informative test

.......................

oops...........

did you do some settings after you install suse?

RLee:/home/lee # hdparm -d1 /dev/sda

/dev/sda:
setting using_dma to 1 (on)
HDIO_SET_DMA failed: Inappropriate ioctl for device
HDIO_GET_DMA failed: Inappropriate ioctl for device


hmmmm.......somebody help me pls.........

I have not changed anything specific.
I have Seagate 120MB (Hitachi worked as well until disk died) SATA connected to nvidia SATA controler (there are some problems with SIl because of design), XFS file system and option noatime set in fstab. Disk is divided into /, /boot, /home, and swap (obviously). There is a problem with your hardware I am afraid. Though it is possible that something happened with your SuSE installation. I have seen worse (and better results) than mine, but yours is "unhealthy". I would try some disk diagnostics.

This is normal, benign error: SATA is not fully recognized as DMA capable. Forget about this error.

my disk is healthy. I am quite sure.

Hi,

Have you tried playing with the other hdparm parameters to check if you have 32-bit access to the disk etc?

Make sure to check out your harddrives physical capabilities before changing the settings, as tweaking too much can lead to dataloss or worse!

As an example, I increased harddrive performance on my system by adding this to the startup-scripts : /usr/sbin/hdparm -c3 -m16 /dev/hda

-Y1

DMA settings do not apply to SATA.

Your disk is just fine. It depends on disk itself. I have ATA and S-ATA:

Tested also on parallel Debian-Etch:

that is prety slow for SATA. The fact that you have similar problem does not mean that this is "normal"

curent SATA status under linux:
http://linux.yyz.us/sata/sata-status.html
So there are hardware problems (compatibility: controlers, disk design) and software (kernel, libata and so on)
http://linux.yyz.us/sata/software-status.html

I suggested either hardware problems or software. Here are software related problems with sata:

http://www.thinkwiki.org/wiki/Proble...SATA_and_Linux
http://www.linuxquestions.org/questions/history/290393
http://users.dslextreme.com/~craig.l...tes/disks.html
http://linux.derkeiler.com/Mailing-L...3-07/2807.html

[QUOTE]Originally posted by broch
[B]that is prety slow for SATA. The fact that you have similar problem does not mean that this is "normal"

I believe that you're incorrect. Again it totally depends on drive and SATA Controller. My controller Silicon Image is on-board and is not even supported. I can't test this in Windows though, I've never had one installed since windows 95

New test on IBM Laptop with IBM Travelstar 5K100 80GB 2.5" SATA Notebook/Laptop Hard Drive-HTS541080G9SA00, 5400 RPM, 8MB Cache with SuSE 9.3 Pro installed:

If you would like to suggest that my IBM is also screwed I'd probably laugh very long and loud :p

did you read this one or that is beyon your comprehension?
http://www.thinkwiki.org/wiki/Proble...SATA_and_Linux

comparing 5400 rpm SATA with 7200 rpm SATA (first post) really makes sense. Anyway your 5400 is still faster than his 7200 rpm.


So this is compatibility problem. Or you don't understand what you have just written?

These results are really slow for SATA, and this is a problem with your hardware/software config.

give up...........

can't solve this problem......

sigh.