Hello everybody,<br><br>I have this very weird problem, that I have noticed some 2 or 3 days ago, and of a kind I have never heard before. I made a post in fedora.forum (<a href="http://forums.fedoraforum.org/showthread.php?t=259047">http://forums.fedoraforum.org/showthread.php?t=259047</a>), but get no awswer since then, and now I have been advised to post here too. <br>
<br>Briefly, the problem is that the
 copy speed between the partition in which I am running my Fedora and 
another partition where I store backup data is now 50K/s, which is extremely
 slow by any standart (it has been usually around 10M/s, almost 200 times faster). This is for exemple much lower than the copy speed between my computers in my lab and home, via internet, which is obviously absurd. I have been using Fedora 64 for many years, and this is the first time I have a problem that I cannot solve by myself, which is very frustrating. Let me proceed with the details.<br>
<br>My laptop is a HP Pavillion Dv7 2080 ep, in which I have two disks of 
250G each. 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 (I call it backup disk). 
The problem happens when I try to copy anything from my home in 
Fedora to the backup disk, and also when, while using fedora, I try to move data within the backup disk itself. I first thought it could be a hardware 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 move data within the backup iself disk using windows also without any problem. 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. <br><br>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. The problem, however, 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. Another possibility was checking the disk via the command line &quot;hdparm&quot;, but since I am not an expert I could not identify anything wrong from its output. Anyway, here it is for both disks (/dev/sda and /dev/sdb):<br>
<br><div style="margin-left: 40px;">[root@localhost ~]# hdparm -Tt /dev/sda <br><br>/dev/sda:<br> Timing cached reads:   11320 MB in  1.99 seconds = 5681.38 MB/sec<br> Timing buffered disk reads:  204 MB in  3.02 seconds =  67.52 MB/sec<br>
<br>[root@localhost ~]# hdparm /dev/sda <br><br>/dev/sda:<br> multcount     =  0 (off)<br> IO_support    =  1 (32-bit)<br> readonly      =  0 (off)<br> readahead     = 256 (on)<br> geometry      = 30401/255/63, sectors = 488397168, start = 0<br>
<br><br><br>[root@localhost ~]# hdparm -Tt /dev/sdb <br><br>/dev/sdb:<br> Timing cached reads:   12044 MB in  1.99 seconds = 6046.50 MB/sec<br> Timing buffered disk reads:  206 MB in  3.00 seconds =  68.57 MB/sec<br><br>[root@localhost ~]# hdparm /dev/sdb <br>
<br>/dev/sdb:<br> multcount     =  0 (off)<br> IO_support    =  1 (32-bit)<br> readonly      =  0 (off)<br> readahead     = 256 (on)<br> geometry      = 30401/255/63, sectors = 488397168, start = 0<br></div><br><br>
<br>
It seems therefore 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&#39;t know for sure what has changed in Fedora through the 
updates since the last backup I made, when everything was working fine. <br><br>He is the line of my /etc/fstab file which defines my backup disk, with the label common<br><div style="margin-left: 40px;"><br><br>LABEL=common            /home/vinicius/Desktop/common  ntfs    auto,user,sync  0 0<br>
<br></div><br>Thank you all for your attention and please apologise me for the huge text.<br>