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Maniphest T68388

2.8 - Long opening files from NAS Storage in local network
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Description

System Information
Operating system: Windows 10
Graphics card: GTX1050

Blender Version
2.8.75
Worked: (optional)

Short description of error
Opening blend files from my Qnap NAS server (QNAP TS-221) takes several minutes. When I copy the file on the hard drive (which is very quick) the problem doesn't appear. The smaller the file, the faster the file opening time is (default scene with cube takes few seconds). It doesn't matter if the file was saved in 2.8 or 2.79. If I open them via 2.79 problem doesn't appear. I have the same problem on two seperate machines i7-7300u laptop (Wifi) and some dual cpu XEON (LAN), tried on Windows 8 and Windows 10 (home and pro).

Exact steps for others to reproduce the error
Mount Qnap NAS at the My Computer, open blend file located on this device via blender 2.8, wait.

Event Timeline

Robert Aval (robaval) created this task.Aug 7 2019, 11:26 PM
Jeroen Bakker (jbakker) lowered the priority of this task from 90 to 30.Aug 8 2019, 9:01 AM
Jeroen Bakker (jbakker) added a subscriber: Jeroen Bakker (jbakker).

Might be related to the new way how we read files. Blender 2.80 has optimize loading of large production files (spring), by only loading the parts of linked libraries that are actually used. We went from sequential access to random access. Please check if your configuration is optimized for random file access. I assume that it is related how your network/QNap has been optimized.

In the studio we use NFS protocol over connected cable which does not have this issue, so might be related to the protocol that QNap uses. What disk configuration is being used (raidN) ? What protocol are you using to connect to the QNap? How is the QNap configured? Is there read performance differences between random access and sequential access when (read/write)?

Sorry for these technical questions, but it is hard to find out what might be the issue if we cannot reproduce it on our side and with very limited information.

Bastien Montagne (mont29) changed the task status from Unknown Status to Archived.Aug 20 2019, 11:48 AM
Bastien Montagne (mont29) claimed this task.
Bastien Montagne (mont29) added a subscriber: Bastien Montagne (mont29).

More than a week without reply or activity. Due to the policy of the tracker archiving for until required info/data are provided.

Robert Aval (robaval) changed the task status from Archived to Resolved.Jun 18 2020, 9:46 PM

I've switched to linux for few months and the problem doesn't bother me.

I want to switch to windows back and the problem is back also.

I'm on windows 10 pro x64 now, the protocol seams not to have any relation with the problem. I was trying on standard windows protocol (i assume it's samba), with nfs and webdav - no success also.

Unfortunally i can't see any setting related to random access should it be in the QNAP control panel?

Robert Aval (robaval) changed the task status from Resolved to Archived.Jul 2 2020, 11:01 AM