When copy, apps start to be frozen

Help & Support
1

Hello, I have one strange problem. When copy one file / 1 gb / to USB flash disk:

  • First - its show that was copy very fast, but to finish copy waiting 1 minute more
  • Second when waiting this one minute more, another soft like Chrome ore Thunderbird start to be frozen till finish copy.

When copy normal with windows explorer all is working fine.

I have win 7 64, D. Opus 10, and PC with 16 GB Ram 4 procesor and SSD disk. Normal everything working fine just this copy make me problem.

Thank you for support.

2

Make sure you're using the latest version of Opus (10.1.0.0)

3

Hello, I use last version of Opus: 10.1.0.0.4570 x64
This is happen when copy to USB flash big files. I can not work on PC during copy. All open soft is frozen. After copy all is ok.

Regards, Pava

4

If this only started happening with 10.1.0.0 (or the recent betas leading up to it) then try setting Preferences / Miscellaneous / Advanced: copy_nonbufferio_threshold to 0 (zero).

(Although the non-buffered I/O mode introduced in 10.1 seemed to fix the freezing some people saw when copying to certain USB devices, maybe your hardware/drivers/anti-virus have the opposite problem. It is a problem with the machine rather than Opus itself as Opus is just writing to a file handle which should not cause such a freeze if the system is working correctly. Unless the machine is very low on memory or similar. (Non-buffered I/O potentially uses a bit more memory, but not a huge amount.))

5

Hello, I made change and is the same. Very strange. When show that is copy is ok. When green line finish / like that is copy already finish / next 15 second I can not use internet or any software.
Memory its not problem in my machine. Think. I use software what really need lot of memory / RAM is 16GB / and no have problem. Also disk is SSD, very good and new disk. Thank you for help.

6

Try resetting copy_nonbufferio_threshold in Opus and then disabling write caching on the USB device in Windows. Here's a guide explaining how to do so.

It sounds like a large write cache is being used on the device and it is responding very slowly while data in that cache is being written to it.