Because nothing ever reads from it! It would also be nice if MiniBrowser had a maximumProcessCount=1 mode; frequently useful for debugging things where having two pages in one process is important.
Huh, I see no indication that there's a process cap by default. I thought it was 20 or some such?
Created attachment 234581 [details] patch
Comment on attachment 234581 [details] patch View in context: https://bugs.webkit.org/attachment.cgi?id=234581&action=review > Source/WebKit2/UIProcess/API/Cocoa/WKProcessPool.mm:173 > + _context->setMaximumNumberOfProcesses(configuration.maximumProcessCount); Everywhere else in this method we use the instance variable _configuration, not the parameter.
http://trac.webkit.org/changeset/170893