#6626 NORM Never A: Disable read preload cache

[Zarro Boogs per Child]

#6626: Disable read preload cache
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 Reporter:  rwh            |       Owner:  rwh           
     Type:  defect         |      Status:  new           
 Priority:  normal         |   Milestone:  Never Assigned
Component:  read-activity  |     Version:                
 Keywords:                 |    Verified:  0             
 Blocking:                 |   Blockedby:                
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 We can gain much in terms of memory usage for Read by disabling the page
 preload cache. It will reduce rendering speed slightly, but memory is our
 main problem I think. I viewed the file byteofpython_120.pdf under jhbuild
 to gather the following statistics:

  - preload_page_cache = 2 (no patch): 154M virt, 65M res, 15M shr
  - preload_page_cache = 1, 140M virt, 51M res, 15M shr
  - Page 5, preload_page_cache = 0, 127M virt, 38M res, 15M shr

 Together with evince developers I will start to work on tile-based
 rendering and more flexible caching, but that will take a while to
 develop. We could include this patch immediately.

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Ticket URL: <http://dev.laptop.org/ticket/6626>
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