Opened 7 years ago
Last modified 7 years ago
#16896 new defect
strange slow behavior in highly specific example
| Reported by: | mauricev | Owned by: | |
|---|---|---|---|
| Component: | other | Version: | VirtualBox 5.1.22 |
| Keywords: | Cc: | ||
| Guest type: | Windows | Host type: | other |
Description
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.
Change History (2)
comment:1 by , 7 years ago
comment:2 by , 7 years ago
Followup posted to https://forums.virtualbox.org/viewtopic.php?f=8&t=83974
You should provide two VBox.log files, one from the iMac and one from the MacPro after:
But, may I suggest something? It's usually better and faster, if issues like this one get first addressed in the VirtualBox forums. More than 95% of the issues are resolved over there, which keeps the developers focusing on the bug fixes and enhancements, and there is no need for another ticket to keep track of.
So, if you can, please open a new thread in the VirtualBox on Mac OS X Hosts section of the forums.
Please be sure to mention that you came from the bug tracker and include the ticket #.