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This is an automatically generated e-mail. To reply, visit:
<a href="http://git.reviewboard.kde.org/r/103129/">http://git.reviewboard.kde.org/r/103129/</a>
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<p style="margin-top: 0;">On March 8th, 2012, 7:39 p.m., <b>Albert Astals Cid</b> wrote:</p>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">I do really think this is a bad idea, at 1920x1080 an image uses around 8M of memory, now go and open a 1000 page document and you need 8G of memory just for the images of pages... And your computer decides to either crash or kill Okular.
Sincerely i don't think I can accept a patch that decides it wants to crash the computer. I understand you want more page loading, but there should be a limite, 50% of your system memory, or 75%, or even 90, but just asking for more and more memory like crazy sounds like a bad plan.</pre>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Hm yeah, you're probably right. I didn't think this through. Question is, what to change? Reducing the amount of maximum pages seems wrong to me because if you've got the memory, use it. I will take a look at the unloading and make some changes. On a side note: I wouldn't expect the operating system to crash just because a process is asking for 8GB of memory, even if I got only 4. The memory handler would just kill it, I guess.</pre>
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<p>- Sebastian</p>
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<p>On March 8th, 2012, 10:23 a.m., Sebastian Rose wrote:</p>
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<div>Review request for Okular.</div>
<div>By Sebastian Rose.</div>
<p style="color: grey;"><i>Updated March 8, 2012, 10:23 a.m.</i></p>
<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Description </h1>
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<pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">After discovering that the aggressive behaviour in okular is not that aggressive at all (preloads only the next 2 pages) I've written the attached patch to add a "Greedy" option. It preloads every page into memory.</pre>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Testing </h1>
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<pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Tested it on my local system, I'm using the modified okular with the new greedy option checked and don't have any issues so far. The memory requirement for a 580 page (color) PDF file is about 1 GiB, the bulk of it for the pixmaps. Other (e.g. unloading) behaviour is like "Aggressive". It takes a while for the whole document to be prerendered but after that it works as expected.</pre>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
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<li>conf/dlgperformance.cpp <span style="color: grey">(fd0e30b)</span></li>
<li>conf/dlgperformancebase.ui <span style="color: grey">(b022f56)</span></li>
<li>conf/okular.kcfg <span style="color: grey">(b1373b3)</span></li>
<li>core/document.cpp <span style="color: grey">(74757f1)</span></li>
<li>ui/pageview.cpp <span style="color: grey">(28835ed)</span></li>
<li>ui/presentationwidget.cpp <span style="color: grey">(bbeb9f5)</span></li>
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<p><a href="http://git.reviewboard.kde.org/r/103129/diff/" style="margin-left: 3em;">View Diff</a></p>
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