fast mode taking long time

[jhavero]

This weekend I switched to JkDegfrag after regularly defraging my hard drive once a week using Windows Defragger. It's a 130 Gig drive with 50% free space sitting on a Windows 2003 Server (3.4 GHz and 3.5 G RAM).

I first ran it under full optimization mode and it took 2 hours and 40 minutes. When I ran it the next day in fast optimization mode it took about 22 hours.

Anyone have this same experience?

[jeroen]

There are a lot of possibilities why the second run took so long. For example, maybe there were a lot of changes on the harddisk and the program may simply have had a lot of work to do. Or perhaps the second time you were running a real-time virus checker in the background, which will check all file activity and can make the defragger very slow. Or maybe some other program was slowing things down. I even had it happen to me on a virtually empty system, something inside Windows itself was slowing the defragger down.

All I can say is that in normal circumstances, all things being equal, the Fast optimization should finish a lot quicker than Full optimization simply because it does less work. If not then something external to the program is interfering. When you see the analysis (step 1) running very slowly then stop the program and wait a minute or so, or do a reboot, I have found that usually helps.

Tip: use a "-d" commandline option to get more information on what is happening.