khromy wrote: > On Wed, Jul 03, 2002 at 10:22:44AM +0100, Stephen C. Tweedie wrote: > > Ugh. My first guess would be that you have one enormously fragmented > > filesystem. 13MB in 2 minutes? A modern disk should get that amount > > of data to disk in one second, but massive fragmentation can simply > > kill disk performance. > > > > If /home is on the same disk, do you get the same problem trying to > > write there? > > Yeah, /home/ is on the same disk. Your guess might be right because > that's what I was trying to show. When I copy the file, which is in > /home/(hda2) to /tmp/(hda1) and I sync, it takes almost 2 minutes. But > if I copy the same file, which is in /home/(hda2) to /usr/local/(hda3), > sync returns immediately. This disk isn't that old either. Get your data off that disk Immediately! If you write a large file, ext2 will do a good job not fragmenting the file. You should be able to get about 20M per second on a sequential writes, about 10M per second, if your filesystem is badly fragmented. So, the drive is taking abnormally long to read/write blocks. That is an indication that it's "going to die soon". That said, maybe there is a whole lot of (random) reads going on on that disk? Are you swapping at the same time? Or maybe your dayly "updatedb" is running? Roger. -- ** R.E.Wolff@BitWizard.nl ** http://www.BitWizard.nl/ ** +31-15-2137555 ** *-- BitWizard writes Linux device drivers for any device you may have! --* * There are old pilots, and there are bold pilots. * There are also old, bald pilots.
