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Maniphest T61880

massively increased .blend load times
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Description

System Information
Operating system: Ubuntu 17.10
Graphics card: Nvidia GTX 1050

Blender Version
Broken: 779860d34e26
Worked: 9541ce2c261b

Short description of error
.blend load times increased massively, from being almost instant earlier. Likely texture related.

Exact steps for others to reproduce the error

  • open load_times_packed.blend
  • I'm getting 1 minute, 22 seconds for this simple scene, which loaded instantly in 9541ce2c261b
  • unpacked, I got 1:05, which might just be normal variation and not related to being unpacked, not sure. still absurdly high in any case.

Revisions and Commits

rB Blender
rB6bab905c9d40 readfile: Disable delayed data reading for compressed blend files

Related Objects

Event Timeline

MACHIN3 (MACHIN3) created this task.Feb 23 2019, 2:05 PM
MACHIN3 (MACHIN3) renamed this task from massively increased load .blend load times to massively increased .blend load times.Feb 23 2019, 2:07 PM
Sebastian Koenig (sebastian_k) lowered the priority of this task from 90 to 50.Feb 23 2019, 4:54 PM
Sebastian Koenig (sebastian_k) added a subscriber: Sebastian Koenig (sebastian_k).

I can confirm this behavior on elementaryOS 0.4.1, GTX980. I tested with a blender version from a few days ago, where it loaded instantly, then compiled with current master, and it takes at least over a minute. Too bad I didn't note the hash of the working version though...

Oleg (DotBow) added a subscriber: Oleg (DotBow).Feb 23 2019, 5:21 PM

I tried open file with 779860d34e26, 9541ce2c261b, 1af810b4ff17 - loads instantly on windows.

MACHIN3 (MACHIN3) added a comment.Feb 23 2019, 5:40 PM

I can reproduce it on macOS 10.14.3 using 779860d34e26 as well.

Campbell Barton (campbellbarton) changed the task status from Unknown Status to Resolved by committing rB6bab905c9d40: readfile: Disable delayed data reading for compressed blend files.Feb 24 2019, 2:51 AM
Campbell Barton (campbellbarton) added a commit: rB6bab905c9d40: readfile: Disable delayed data reading for compressed blend files.
Campbell Barton (campbellbarton) mentioned this in T61855: Loading times of files that link in external data has become inacceptable.Feb 24 2019, 10:57 PM
Campbell Barton (campbellbarton) mentioned this in rB893fa598319e: readfile: re-enable read on demand for WIN32.Feb 24 2019, 11:05 PM