Slow and irresponsive Sortbylastaccess (beta 7)

[poutnik]

I decided to sort time by time my BootOptimize zone
by ascending access ( MFT + folders are behind that ).

I have realized, that comparing to fastfill,
the sorting starts by comparable speed.

But later the moving of small/medium size files
becomes interrupted by long pauses when it looks like nothing happens.
it take very long until something changes in the screen.
this is valid even for turned off AV and "-d 0"

MyDefrag becomes very unresponsive,
It takes 50-65% of my dual core  E4700,  Memory consuption is normal.

[jeroen]

Thanks for testing and for the feedback, I appreciate it! This is a known problem and I am working on it. The defragmentation thread sometimes takes so much CPU that nothing is available for the Windows thread, so the program is unresponsive. Drawing command pile up for the Windows thread and a snowball effect occurs. It especially happens during analysis if you run the program for a second time, the MFT is then in the Windows cache and analysis is too fast. But it can also happen if the program is moving a lot of small files, and in some other cases.

[DWalker59]

Interesting: JKDefrag does the same thing as MyDefrag when sorting by LastAccess time.  I ran a defrag to sort by last access using JKDefrag on a 300 GB IDE disk, and it ran for 35 hours and it seemed that nothing was happening on a quad core CPU.  Task Manager reported that the system was mostly idle.

[jeroen]

it ran for 35 hours and it seemed that nothing was happening on a quad core CPU.

Another reason for long pauses is that the Microsoft defragmentation API sometimes takes a long time on innocuous little files. After a timeout it will continue.