Bug report #18487
Print composer extremely slow outputting PDF's
| Status: | Closed | ||
|---|---|---|---|
| Priority: | High | ||
| Assignee: | - | ||
| Category: | Map Composer/Printing | ||
| Affected QGIS version: | 2.18.9 | Regression?: | Yes |
| Operating System: | Windows 7 Enterprise (Service pack 1) 64-bit, 16GB Ram, Intel core i7-4800MQ 2.7GHz | Easy fix?: | No |
| Pull Request or Patch supplied: | No | Resolution: | |
| Crashes QGIS or corrupts data: | No | Copied to github as #: | 26375 |
Description
I'm using QGIS version 2.18.9. When outputting an atlas as PDF's performance is terrible. I spent hours yesterday trying to output 48 pdfs from an atlas suffering multiple crashes. Whilst searching on here I found similar issues reporting the same thing and people also reporting that it was working in a previous version of QGIS. I tried with version 2.16.3 and did not suffer the same performance issues. Some numbers for you:
QGIS V2.16.3 - Outputting 48 no. PDFs as Raster took 5 minutes.
QGIS V2.18.9 - Outputting the same PDFs as Raster started 40 minutes ago and is only up to number 39.
I also noticed that before I selected output as Raster the file size was 4x bigger in 2.18.9 as it was in 2.16 approximately 100mb as opposed to roughly 25mb.
Unfortunately I cannot share the data due to the project I am working on. As an example of the data set I have in the project here are some stats:
There are 200 vector layers, mainly GeoDB files with a few shapefiles.
There are 282 background raster images from ordnance survey open data. (display controlled by the scale)
History
#1
Updated by Nyall Dawson over 6 years ago
- Status changed from Open to Feedback
There's really not enough info here for any meaningful debugging... I'd suggest trying with no plugins, testing on a different machine, remove layers one by one, etc and see if you can narrow down what causes the issue. It's not a common issue.
#2
Updated by Simon McGowan over 6 years ago
That's fine. I've made you aware that somewhere between 2.16.3 and 2.18.9 there is a problem. It works as expected in 2.16.3 so I will use that version for my work, unfortunately I haven't got time to trial and error every layer I have.
I disagree that its not a common issue, others have reported similar problems with 2.18: #17117, #16829, #15780
It finally took 55 minutes to output the PDFs by the way. 2.16 for the win!
#3
Updated by Nyall Dawson over 6 years ago
Ok - but be aware that none of those reports are reproducable either. End result is that this bug is never going to get fixed unless someone who experiences it can share a project and data which demonstrates it.
#4
Updated by Nyall Dawson about 6 years ago
- Status changed from Feedback to Closed
Closed due to lack of feedback