Bug 414593

Summary:	Huge memory usage with some PDFs
Product:	[Applications] okular	Reporter:	Andrius <andrius.puksta>
Component:	PDF backend	Assignee:	Okular developers <okular-devel>
Status:	RESOLVED NOT A BUG
Severity:	normal	CC:	aacid
Priority:	NOR
Version First Reported In:	1.8.3
Target Milestone:	---
Platform:	Manjaro
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description Andrius 2019-11-28 08:16:15 UTC

SUMMARY
Memory usage is huge with certain (probably only large) PDFs. When the document is opened, OKular starts consuming ~8 gigabytes of memory. Note: I set the memory usage to "Greedy" in Okular
Link to file (too large to be uploaded here):
https://1drv.ms/b/s!AtVUP40CJsppo10TsD3sbtVPqzr9?e=gwFPxT

STEPS TO REPRODUCE
1. Open the attached PDF file with Okular

OBSERVED RESULT
Huge memory usage

SOFTWARE/OS VERSIONS:
Linux/KDE Plasma: Manjaro KDE
KDE Plasma Version: 5.17.3
KDE Frameworks Version: 5.64.0
Qt Version: 5.13.2

Comment 1 Albert Astals Cid 2019-11-28 18:39:38 UTC

Okular will us as much memory as possible when set to Greedy, you can't complain it's doing that

Comment 2 Andrius 2019-11-28 21:06:45 UTC

But it should only use the memory to load the document, what else is there to take up so much space?

Comment 3 Albert Astals Cid 2019-11-28 21:11:18 UTC

the pre-rendered images of the 1049 pages