Extremely slow disk read access software raid 5
I've just installed a box with Fedora Core 6, using the install program
to setup raid 5 over 3 disks, cele...@1.7ghz.
Now, the read access is descent unbuffered (apx 95mb/s with hdparm). It
feels fairly fast in most operations, but some are dreadfully slow.
* Copying a directory containig 100 files with cp to the same partition
only takes a whiff.
* Doing the same thing with MC and it only seems to copy one file per
* FTP Uploading a file to the box - about 10MB/s, Downloading from it
It's the actual disk read that takes forever using some programs. It's
as if some progs use a special way of reading files that doesn't at all
go well with my disk setup.
It only seems to be when reading, but I havn't tested this that much.
Anyone have any ideas?
Running hdparm gives me this:
Timing cached reads: 3032 MB in 2.00 seconds = 1515.26 MB/sec
Timing buffered disk reads: 124 MB in 1.79 seconds = 69.41 MB/sec
It's the same for sdb1 and sdc1 aswell. Looks pretty good, doesn't it?
So I'm confused.
Last edited by Magsimoe; 12-17-2006 at 06:11 PM.