Ubuntu :: Very SLOW File Copy Speed (disk To Disk)

Mar 27, 2011

i have amd athlon x2 3gb RAM ddr2 two hdd one 80gb other 1tb in this computer i got only ubuntu all disk in EXT4.i want to copy 10gb many file of 700mb or 1gb ( many linux ISO )the transfer is 1mb/s this is SOOO SLOW.i did a touch /forcefsck just in case but nothing happen it is still slow!!what might be the problem ??

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Ubuntu :: Slow Down Hard Disk Rotation Speed?

Jun 10, 2011

I have a big problem my hard drive is works fast all the time and now i hear clicks and scratching and weird stuff from so how can i make it slow down. i cant buy a new one if it breaks down ...

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Debian :: Sata Disk Write Speed Is Very Slow ?

Sep 14, 2010

I got a new machine with GA-p55A-ud3 mobo and a WDC WD10EARS 1T disk.

When I tried to benchmark the disk IO, I was suprised by the low write speed:

The related output from my lspci:

The related output from my lshw:

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Debian Configuration :: Sata Disk Write Speed Is Very Slow

Sep 14, 2010

I got a new machine with GA-p55A-ud3 mobo and a WDC WD10EARS 1T disk. When I tried to benchmark the disk IO, I was suprised by the low write speed:

[Children see throughput for 1 initial writers = 35962.63 KB/sec
Parent sees throughput for 1 initial writers = 35962.63 KB/sec
Min throughput per process = 35962.63 KB/sec

[code].....

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Hardware :: Server - Buffered Disk Read Speed Just 3.98MB/s Very Slow ?

Jul 12, 2010

I am having a problem with my CentOS based server where the hard drive speeds are incredibly slow for both of the hard drives installed -

Code:

Timing cached reads: 16512 MB in 2.00 seconds = 8272.92 MB/sec

Timing buffered disk reads: 12 MB in 3.01 seconds = 3.98 MB/sec

I have looked around but do not understand the complexities of rebuilding kernel etc so would need some assistance. I have checked IO_support and it is set to 0

Code:

Here are the results for hardware installed after a quick lspci -v

Code:

If there are any noticeable incompatibilities here and how I could work to speed this up. I only have SSH access and could possibly get a KVM on it as it is currently locked up in a DataCenter.

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Ubuntu :: File Location On Disk & Access Speed?

Aug 23, 2010

On a modern system--Lucid, SATA 3.0--does the location of a file on the physical disk make an appreciable difference to its access speed? If so, is there a (safe) way to put a file in a particular place on the disk?

I ask because I would like to reserve some space on disk to remain unused without messing with the partition table. My thought was to do this by using dd to create some large files (4 Gb each, or so) containing zeros.But obviously I would like to put them on the slowest part of the disk, as they won't be used for anything.

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General :: Disk To Disk Copy Fedora 12?

Aug 17, 2010

S.M.A.R.T.tells me my primary fedora drive has lots of bad blocks,so I ordered a used identical drive from ebay.I want to do the very basic process of making a full backup of my existing drive - so as to replace it with a more or less identical replacement. Logically identical - not necewsarily sector to sector identical.im not literate in unix and its children - and seem to find a plethora of descriptinos of how to do what I want to do. which is

1. format the drive - what you may call low level format - ie op sys independent.

2. create a partition system compatible with my existing disk.

3. copy everything from my existing disk to the new disk.

4. put existing disk on the shelf as a backup and start to use new disk.

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General :: Cannot Copy File To USB2 External Hard Disk

Jan 25, 2010

I plan to reformat & reinstall my linux (centos).Before doing this, I got to backup my files into my USB external hard disk from Seagate (FreeAgent). The problem I faced is that I could not copy file into the hard disk even I was in root user. It prompted me that it is only read-only. I just wonder why.I have tested with my thumb drive. It worked. May I know why I could not copy file to the USB FreeAgent hard disk. Due to file system?

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Ubuntu Installation :: Copy Hard Disk Have 10.04 And Ext4 To 1000 Hard Disk?

Sep 23, 2010

I want to copy hard disk have ubuntu 10.04 and ext4 to 1000 hard disk for new 1000

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Ubuntu :: Copy Old Notes From My Old Disk To New Disk - Where Does Tomboy Saves Notes ?

Jan 14, 2010

i have switched disks and i want to copy my old notes from my old disk to new disk.so which folder does tomboy saves data so i can copy them over?

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Server :: Amanda Unable To Copy Backup File From Holding Disk To Tapes

May 14, 2010

I have some issue with my amanda backup server, which is connecting with Scalar Quantum i500 via FC. I got the error as below 3 days ago.
These dumps were to tape 000289.
*** A TAPE ERROR OCCURRED: [No more writable valid tape found].

Normally I will load the proper tapes and run the amflush to push stuff from the holding disk to tapes manually. However this time amflush in this case did not help, Amanda immediately responded with an out of tape error again.

Meanwhile I got some errors from dmesg as well
st3: Error 18 (sugg. bt 0x0, driver bt 0x0, host bt 0x0).
scsi1 (0,3,0) : reservation conflict

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Ubuntu Networking :: Slow Copy Speed To Network Volume

May 4, 2011

In mi fstab file I mount a smb file server at boot. The code is:
//<ip address>/data /home/eng-2/NAS smbfs credentials=/home/eng-2/.smbcredentials,dir_mode=0775,gid=1000,uid=1000 0 0
Transfer rate to the server is approx 100 KB/s
Whilst transfer rate from the server 16 MB/s
If I mount it from Places>connect to server. Both to and from speeds are 16 MB/s. Why is it so slow when mounted through fstab?

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Fedora :: Extremly Slow Copy Speed (50K/s) / Make It Up?

Feb 17, 2011

I am having a very weird problem, of which I have never heard before. The problem, shortly (I will give details in the following), is that the copy speed between the partition in which I am running my Fedora and another partition where I store backup data is 50K/s, which is extremely slow (it has been usually around 10M/s, almost 200 times faster).

My laptop is a HP Pavillion Dv7 2080 ep, in which I have two disks of 250G. One of the disks is partitioned between two operational systems, Fedora 14 64 and Windows 7 64, and the other disk contains the above referred partition where I store my backups (lets call it backup disk). The problem happens ONLY when I try to copy anything from my home in Fedora to the backup disk. I first thought it could be a problem in the backup disk. Then I login into the windows and made a copy of some AVI files (3G approx) to the backup disk, which went normally, within a few seconds, thus eliminating this possibility. I try therefore to make the inverse process, a copy from the backup disk into my home folder in Fedora. It went normally, copying 4 G also within few seconds, actually with an excellent speed of 50M/s. After searching in google, I saw some people also complaining of slow copy speed (although they had 7M/s, more than 100 times faster than what I have now), and one cause could be that the source file system (in my case the Fedora home folder) would be near its full capacity. I therefore eliminate everything that I could, around 15G, and now I have like 20G of free disk space, which I think is more than enough for everything. However, the problem persists. Some people also said that it could be the type of files and/or amount of data. I therefore tried several kinds of files (from raw data files to AVI and RMVB regular video files), and several amounts of data (from single files with a few Megas to folders with 20G) and in all cases I had the same unacceptably low copy speed of 50K/s.

It seems to be a problem in the software, caused by the updates, since until 10 days ago it was everything ok. However, I usually make the updates whenever they appear but make my backups much less frequently. Therefore I don't know for sure what has changed in Fedora through the updates since the last backup I made, when everything was working fine.

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Ubuntu :: USB Disk - Slow Transfer Speeds And Slow System?

Apr 17, 2011

Whenever I transfer a movie into my 16GB USB flash disk, my whole system becomes windows-like and unusable!

When i drag the file(s) into the USB disk folder, it starts out fine and pretty darn fast (25mb/sec) then slowly decreases until it's unbearably slow (3m/sec) and as a side effect my whole system starts deteriorating. I basically have to wait for the file to finish transferring before i can use my desktop again!

This has been happening with every version since Karmic (all 64bit)- I put up with it because I don't use the USB stick that much.. but lately it's been my go to source for transfering large files to/from work.

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Fedora :: Disk Copy Utility - Should Be Able To Not Only Copy Files But Boot Sector And Everything

Sep 1, 2010

I have a 160GB harddrive which I installed a F12, would like to upgrade to a bigger drive, but I hate to have to re-install everything.

Recommend a good disk copy utility? The utility should be able to not only copy files, but boot sector and everything. So I just need to make a copy, change my BIOS to boot from the new drive and run everything as before.

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Ubuntu Networking :: Copy Files From Samba Server To Windows Seven Media Center - Speed Too Slow

Feb 24, 2010

When i try to copy files from my samba server (Ubuntu 9.10) to my windows seven media center, the speed is extremely slow. So slow that is better to download 100mb file from the internet, than from my lan. And on my lan, every card and switch is at 1000 mbps speeds on cat5 cables. And from XP or other linux machine

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Ubuntu :: Write Speed For Hard Disk And / Or Partitions

May 10, 2010

I have what seems to be a hard disk Write speed problems with my first hard drive. Timing the cp command of a 700 Meg file takes about 8 secs from disk 2 to 3 but takes 25 minutes from disk 2 to disk 1.

Here are the details:
Kubuntu 9.04 (Kernel 2.6.28-15-generic)
Hard Disk 1 : /dev/sda (WDC WD2500KS-00MJB0)
Partitioned
/dev/sda1 ext3 / 10 Gigs
/dev/sda2 extended 222 Gigs
/dev/sda5 linux-swap 2 Gigs
/dev/sda6 ext /home 220 Gigs

Hard Disk 2 : /dev/sdb (WDC WD2500AAKS-00F0A0)
Partitioned :
/dev/sdb1 ntfs 16 gigs
/dev/sdb2 xfs /home/eric/data_drive 216 Gigs
Hard Disk 2 : /dev/sdc (ST3500320AS)
Partitioned:
/dev/sdc1 xfs /home/eric/data_drive2 465 Gigs

By doing 'time cp ...sdb1/test.avi ...sdc1' takes about 8 seconds and same vice-versa. the command 'time cp ...sdb1/test.avi ...sdb1/test1.avi takes about 11 seconds and the same holds true if sdc1 is used But copy sdb1 or sdc1/test.avi to either sda1 or sda6 and it takes 25 minutes. Same problem if I copy from the same drive partition (sda). I have booted a livecd Knoppix 6.2 and the same problems happens.. So safe to say it's not Kubuntu. The only thing that is left to do is backup and reformat the partitions as XFS and try again. I also did a full smartcontrol Extended test and no errors. Checked all the various logs and nothing found.

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Nov 29, 2009

how can I check if disk devices are running at the proper speed (read/write access)?What are, for example, the correct values for ATA o SCSI device, if I test them with hdparm?

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Red Hat / Fedora :: Find Hard Disk (RPM) Speed?

Dec 14, 2010

How do I check my hard disk Revolutions Per Minute (RPM) speed from a Linux shell prompt without opening my server case? any other third party utility please let me know.Ieferenced some other articles. they give only model number, serial number and disk space.

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Server :: Copy Of IBM Server Hard Disk Data To Another USB External Hard Disk?

Sep 1, 2009

Copy of IBM Server hard disk data to Another USB External Hard disk?

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Ubuntu Servers :: Raid1 Reads At Single Disk Speed?

May 3, 2011

im on 10.10(desktop) and mdadm was v2.8.1 from 2008, very out of date so i tried 3.2.1 -> no change. mdadm raid1 read speeds are the same as single disk. note i used the tests in the disk utility benchmarking tool at first --these showed raid 5 atleast to be much better but when i tried dd reads raid5 dropped off with larger data to almost the same (slow) speed as raid1. compare:

[code]....

using two partitions will be enough to show raid1 performs at single disk speed. I dont really want to use a 4 disk raid0 just to get the read speed i should be able to get with raid1 as i dont really care about the size loss. I would of course use raid10 but i have found this suffers from the same problem (achieve same read speed as 2 disk stripe). So whilst im shocked others aren't reporting this, unless there is some obscure reason why my system would give these results i think raid1 in not behaving as it should.

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Ubuntu :: Hard Disk Working At Half Speed During Boot?

Oct 22, 2010

I've recently updated my ubuntu lucid to maverick (32bit).However I noticed a strange issue at boot. My boot time is increased more than three times(tried to reprofile, but with no improvement) from 24s to 1.23min.After some bootcharting,I noticed that the disk utilization during maverick boot seems to be at 50% for most of the time and also the cpu seems to work at half speed for most of the time...My laptop is an asus m51sn, intel t8300, nvidia geforce 9500m gs, 3gb ram, 500Gb WD scorpio blue hdd.

bootchart for maverick:
bootchart for lucid:

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General :: Iostat To Print Disk Usage Speed?

Jul 29, 2011

Trying to understand grep,sed,awk but maybe its too early for me and also i suspect iostat is not the correct program for exactly what i'm looking for...The goal is to print only the current read and write speeds of the disk, represented in a numerical value with two separated commands. So for example when writing a file to disk from an external disk, the value reflects the speed of the process.

"iostat -dk sda" prints
Code:
Linux 2.6.38 (Infidel) 07/30/2011 _x86_64_ (4 CPU)

[code]....

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General :: Java - Find Hard Disk (RPM) Speed?

Dec 14, 2010

How do I check my hard disk Revolutions Per Minute (RPM) speed from a Linux shell prompt without opening my server case?

I referenced some other articles. they give only model number, serial number and disk space, but I need Hard disk RPM speed using shell script. any other Java program

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Ubuntu :: One-to-one Copy Of A Hard Disk

Feb 16, 2011

i have an old copy machine (canon gp225). the hard disk makes a whistling noise and i suppose it is just a question of time when it will bust.i do have some stone-aged computers here and i think i could use one of this hard disks as a replacement.how do i get the operating system (probably unix/linux or similar) plus the content of the boot sector plus the software on this new hard disk? i think if i could do a one-to-one copy i might have a chance that i could replace the old hard disk and it will work.

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Ubuntu :: Disk Very Slow After Going From 9.04 To 10.04 / Make It Up?

Oct 1, 2010

My disk is very slow after I installed ubuntu 10.04 over my old 9.04. Doing some tinkering helped a little code...

But it is still far too slow. On the other version, I had a custom partition setup, with the home partition with 100GB, and ext3 (and other partitions for swap, boot, root folder and space for a windows partition I never cared to install ).

This time I am using a standard Lynx setup (2 partitions, the swap and the main one with almost 250Gb, using ext4).

Some applications I develop, that use disk for some unit tests, are now very slow to work with. Is there a way to making it faster? Going back to 9.04? Waiting for 10,10? Gparting and making partitions smaller on ext3? I don't know if any of these will work.

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General :: Dd Be Used To Copy One Disk To Many?

Jun 1, 2010

Does anyone know if this is possible? I am attempting to copy one "master" hard drive to two or more "destination" drives. I hope to use the DD command because the master drive is encrypted and I need to make exact copies to "destination" drives.

I have used dd if=/dev/sda of=/dev/sda and it works for one-to-one operations. I tried dd if=/dev/sda of=/dev/sdb of=/dev/sdc but the command skips the of=/dev/sdb and copies to sdc....I knew that was going to be too easy

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Ubuntu :: USB Disk Clone With Dd But Still Not Exact Copy?

Dec 11, 2010

I'm trying to clone a 2GB USB memory stick to another stick just like it (same size and brand). The src drive has three partitions, one fat, one ext2 and one encrypted (in that order). It also has an mbr. I create the clone using the following command:

dd if=/dev/xxx of=/dev/xxx bs=512k conv=noerror,notrunc

Once it's done the mbr, the ext2 and the encrypted partitions seem fine, but the fat one is slightly modified on the clone. Here is a hex dump of the (broken) clones fat partition followed by a dump of the original partition.

"Clone":
0000000 3ceb 6d90 646b 736f 7366 0000 0402 0001
0000010 0002 0002 f800 00bc 003e 0040 0000 0000

[code]....

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Ubuntu :: Unable To Copy VCD S To Hard Disk?

May 6, 2010

I am unable to copy video cds on my hard disk.yet they play in xine,the cds are in ISO9660 format and i am using 10.04 lucidlynx(gnome).

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Ubuntu Installation :: Copy OS Partition From One Disk To Another?

Jul 17, 2010

I spend the vast majority of my time in Ubuntu, but every so often I still encounter the odd errand that requires a free copy of Windows that came with my hardware.

So I have Windows 7 on my laptop which I like slightly better than XP and a whole lot better than Vista. I am not in there a lot besides that its required for a web design class and sometimes for a few stubborn games, but I would very much like to copy my Windows 7 partition to a 100gb partition on my TB HDD.

How do I do it? Keep in mind, I am barely two tiers above noob on a scale of 1 to 20. I am working on it though.

I also want this partition to be bootable. I dont care if I lose the rest of the data on the disk. I want to redo everything anyway. I definitely want it to boot though, not just for the data to exist.

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Ubuntu :: Systems Get Slow When Writing To Disk?

Jan 18, 2010

This is a curiosity of mine, and I expect a technical answer, if someone knows it. Why the systems become so irresponsive when doing hard-disk input and output? This happens even if writing is done to a secondary disk where neither the system or the swap are stored.

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Hardware :: Copy Disk And Put Into Different Machine?

Mar 13, 2009

I added another disk to an old Dell Dim2400 that had one HD. It was a blank disk, and instead fo re-loading and re-configuring SuSE, F10, and PCLOS, I did a cp command from another multi-boot computer, like so:

Code:
cp /dev/sda dev/sdd
sda is an 80G Seagate, with SuSE, F10, and PCLOS.
sdd is an 80G Western Digital.

The copy went perfect. It begins to load SuSE in the old Dell, showing new peripheral hardware, but it stops when it realizes it's on a WD and not on a Seagate. The line is something like, 'Looking for dev/by-uid=xxx-123-Seagate-yyy'. It asks if I want to go to the next device to boot up. I enter 'NO', because it will go to Windows.

It then exits to 'bin/sh' prompt (or something close (shell?)).

Can I boot LiveCD and modify this so it completes the load?

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Networking :: File Transfer Speed Too Slow ?

Oct 14, 2009

We have a server and we have instales an Open suse 10.3 on it. We created a Samba server also. Made to share folder, that we acces from network from other computers that have xp.

The problem is if we try to copy from server it is very slow only 100-300kb/s. The strange thing is that if i copy 1 file then its slow but if i start to copy another one the speed gos up to 10-15mb/s. Evry time i want to copy somethin or install from that server i need to start another copy. If i copy from a comp to that server the speed is normal only if i copy from server its slow.

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May 2, 2010

I'm running Lucid RC with all updates and Brasero 2.30.0. I can't do a disk copy with this program. It gives me an error that not all libraries are installed. It first gave an error that cdda2wav was not installed but that is not true and now I get this general error. I'm installing K3B as we speak but I prefer to keep a straight Gnome installation.

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May 29, 2011

I'd like to move my existing Ubuntu installation from my hard disk (/dev/sda1) to a USB stick. How do I copy the data from HD to USB? dd is obviously not the right option since the HD is 320GB and the USB stick only 16GB. However, only 3.5GB are used so this makes perfect sense.And it would make my HTPC even more silent |-)

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