On Jun 25, 2009, at 9:50 AM, Michael Ash wrote:
Oh, forgot to mention, in case any Apple peoples are reading this and interested in it (although I imagine that any who care already know), this is filed as rdar://5563149 which is still open as of this writing.
It'll be returned to you shortly as a duplicate of a bug that encapsulates a larger set of outrun-the-collector issues.
A number of these issues have been mitigated in SnowLeopard, but it is still possible to outrun the collector (and quite easy with pathological test cases, as you indicated).
In general (and for the benefit of the rest of the list), GC is optimized for best performance within a running application. There are any number of pathological patterns -- micro-benchmarks, if you will -- that can demonstrate serious performance issues. If you write one, please file a bug with it -- while the goal is real world performance, the team still does appreciate collecting edge cases and making them work better, too.
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