Thanks Bas! Going to move this to S3 - I tried to look into old bugs and didn't seem to find other obvious performance reports due to this coalesce problem. There is a related enhancement bug 1517509 , labelled performance-impact-low.
Bug 1155323 Comment 12 Edit History
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Thanks Bas! Going to move this to S3 based on the current information we can have - I tried to look into old bugs and didn't seem to find other obvious performance reports due to this coalesce problem. There is a related enhancement bug 1517509 , labelled performance-impact-low. I also added Botond in the CC list.