title: How do I fix these Git GC problems?
body: <p>I have a recurring issue where my git repo (I think?) will decide it needs to garbage collect. This process takes well over a half hour, and will then trigger on every pull/push operation. </p>
  
  <p>Running Git GC manually takes a half hour, but doesn't seem to fix the issue. The only solution I have found is to delete my repo and clone fresh, which is suboptimal for any number of reasons. </p>
  
  <p>My git GC operations may be slow because I have set git some memory limits to stop it from crashing out on git GC operations, as it used to do when it hit the 4gb windows memory limit and then crapped out.</p>
  
  <p>Any help would be appreciated. It is a large repo, the repo does contain a significant amount of binary data, as well as a large number of very sizeable (>500k) text files.</p>
  
  <p>So,
  1. How do I limit the amount Git decides to garbage collect.
  2. How do I speed up the GC operation?
  3. What can I do to solve or minimize the greater issues involved (aka, why it has to garbage collect in the first place)?</p>