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## Scaling Gitblit
My experience with scaling Gitblit to be very large is from interacting with those who do run very large Gitblit or Gerrit installs.
### Configuring Big JGit Servers
-Xmx8g # gobs of JVM heap
# for `jgit daemon` or gerrit.config
[core]
packedGitLimit = 4g # around 50% of JVM heap
packedGitOpenFiles = 8192 # don't forget to configure ulimit
streamFileThreshold = 2047m # avoids pathological inflate
deltaBaseCacheLimit = 50m
# applies to `jgit gc`
[pack]
bigFileThreshold = 20m # don't delta compress big binaries
indexVersion = 2 # use index v2
-- Shawn Pearce, co-team lead on JGit @ Google ([slides](http://www.eclipsecon.org/2013/sites/eclipsecon.org.2013/files/Scaling%20Up%20JGit%20-%20EclipseCon%202013.pdf))
### How does these Gerrit settings apply to Gitblit?
Gerrit & Gitblit are both JGit-based servers. They have similar configuration options. Here are the relevant Gitblit settings:
git.packedGitLimit = 4g
git.packedGitOpenFiles = 8192
git.streamFileTreshold = 2047m
git.deltaBaseCacheLimit = 50m
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