Okay, I'm changing this back to "fix committed" after talking to mwhudson about it today. It sounds like the loggerhead process on launchpad is simply taking up a lot of memory because it's got so many branches to look at, not because it's leaking. I actually couldn't get a loggerhead process to grow consistently or leak in my recent testing, which was far more thorough than my previous testing when I thought that there was a leak. It certainly gets really large, and we could certainly look at how to reduce memory usage, but we don't seem to be leaking.
Okay, I'm changing this back to "fix committed" after talking to mwhudson about it today. It sounds like the loggerhead process on launchpad is simply taking up a lot of memory because it's got so many branches to look at, not because it's leaking. I actually couldn't get a loggerhead process to grow consistently or leak in my recent testing, which was far more thorough than my previous testing when I thought that there was a leak. It certainly gets really large, and we could certainly look at how to reduce memory usage, but we don't seem to be leaking.