[3dem] Help with 7z issue, likely also with DM/GMS software

Guenter Resch lists at nexperion.net
Tue Feb 5 09:20:36 PST 2019

Hi Daniel,

> We use Leginon to collect data, and once a while we encountered some problem with data transfer from K2 camera PC to our data storage.
> Every time, there are 7z.exe commands running in Task Manager.
> This problem always happens at midnight (12AM), most of the time, at Friday night.

This sounds like a problem that also exists in SerialEM and that is related to the rotation of Digital Micrograph logs. This is the solution that Craig Yoshioka posted in 2017:

"The midnight issue is caused by the DM log directory being too full. If you empty it the problem should go away.  I suspect DM is trying to rotate and compress the logs at midnight and if it takes too long and there is an ongoing exposure it breaks."

In SerialEM, there is even a WaitForMidnight command to cover this ...

Hope that helps,


Dr. Guenter Resch
Nexperion e.U. - Solutions for Electron Microscopy - www.nexperion.net
Ziegelhofstrasse 136/1, 1220 Vienna, Austria - Phone +43 664 94 17 210
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