id,summary,reporter,owner,description,type,status,component,version,resolution,keywords,cc,guest,host
16896,strange slow behavior in highly specific example,mauricev,,"We use a program Plexon Offline Sorter to manipulate acquired data. Specifically, on an iMac with an i5 (identifier 15,1), the most recent version of Virtualbox (5.1.22), the program is impossible to manipulate data because it's too slow. It's not clear at which version of Virtualbox the program became unusably slow. 5.0.36 works fine. In addition, and quite oddly, the current version works fine when tested on a Mac Pro using the same vdi file. I tried to maintain the same settings in the vbox.

To reproduce this requires a number of steps.

The program is available for download at http://www.plexon.com/sites/default/files/OFSx64v3w7Setup.exe. 

It is installed on a Windows 7 SP1 x64 guest machine with security updates current as of 6/17. The RAM is set to 3072 MB.

An example data file can be found at https://drive.google.com/file/d/0B9hWBqS8eh_QUkZlYVNla0c3ODQ/view?usp=sharing

We configure Plexon to open this file by selecting for its extension, .nev, in the open file dialog.

Once the file is open, click on the channel 1 marker to select that channel. The center window is where manipulation takes place. Hold down the control key and drag shapes around the data with the left mouse button held down. The mouse should draw in real-time and then fill in the shapes once the mouse is released.

As mentioned above, on this particular iMac, this worked with older versions of Virtualbox such as 5.0.36. In the current version, the mouse dragging barely registers because the program can't keep up. ",defect,new,other,VirtualBox 5.1.22,,,,Windows,other