IPC messages are not sent until send buffer fills up. This causes page loads not start until enough messages are sent. Can be witnessed by starting a load and observing that the load doesn't start until enough mouse clicks have been made.
Created attachment 76019 [details] Patch to fix the problem
Comment on attachment 76019 [details] Patch to fix the problem Rejecting patch 76019 from commit-queue. Failed to run "['./WebKitTools/Scripts/webkit-patch', '--status-host=queues.webkit.org', '--bot-id=eseidel-cq-sl', 'build', '--no-clean', '--no-update', '--build-style=both']" exit_code: 1 ERROR: Working directory has local commits, pass --force-clean to continue. Full output: http://queues.webkit.org/results/6941015
Eric, any idea why the cq is acting like this?
It's unclear. However Adam just landed a change today which we hope will fix it. :(
Comment on attachment 76019 [details] Patch to fix the problem Clearing flags on attachment: 76019 Committed r73709: <http://trac.webkit.org/changeset/73709>
All reviewed patches have been landed. Closing bug.
http://trac.webkit.org/changeset/73709 might have broken GTK Linux 32-bit Debug