Opened 17 years ago
Closed 16 years ago
#2752 closed defect (fixed)
[patch] WMSPlugin memory usage
| Reported by: | Upliner | Owned by: | team |
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| Priority: | major | Milestone: | |
| Component: | Core imagery | Version: | |
| Keywords: | memory | Cc: |
Description
WMSPlugin consumes very large amount of memory when zooming in and runs very slow because of swapping. I have found that GeorefImage class creates in memory resized copy of image(reImg) which is very large when zooming in. Maximum size of reImg is 10000x10000 which consumes 300MB of memory each! I propose to lower default maximum resolution to 1000x1000 and allow users to set custom size through wmsplugin.reimg_res property.
Attachments (2)
Change History (4)
by , 17 years ago
| Attachment: | wmsmem.diff added |
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by , 16 years ago
| Attachment: | wms_memory_usage.patch added |
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I mostly agree, however I'm strongly against making this customizeable. For one, users should not have to customize this because because it's dependent on the new/old drawing method and has nothing to do with their memory available. And for two, it will likely cause issues if accidentally set to a wrong value. I've increased the limit to 2000 pixels because otherwise I can have up to 6 images visible which is still slow with the traditional drawing method. I guess 2000 makes a good compromise between this, and each image takes only about 12 MB. Patch removes some old code, too.
comment:1 by , 16 years ago
| Summary: | WMSPlugin memory usage → [patch] WMSPlugin memory usage |
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Patch to lower WMSPlugin memory usage