<div class="gmail_quote">On Wed, Sep 23, 2009 at 1:46 PM, Joćo Eiras <span dir="ltr"><<a href="mailto:joaoe@opera.com">joaoe@opera.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div class="im"><br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
and the more browser UI jank users will be sure to experience.<br>
</blockquote>
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If I may, as a side note, locking the UI is a user agent specific issue. No specification requires user agents to lock their UIs while scripts execute.<br>
Opera has achieved this long time ago, by properly dividing ecmascript execution with all the other tasks, and the new browsers with multi-process architecture also do not suffer from this problem.<br>
</blockquote></div><br><div>You're right; I misspoke.</div><div><br></div><div>It is true, however, that any web pages in the same event loop will be janky. And multi-process browsers can't always put every tab in its own process, so this can even affect multi-process browsers.</div>