Why is the database of a Meteor app that has been run once (and never loaded) taking up nearly 3GB?

Question

UPDATE: this was fixed after Meteor v0.4 (2012). For historical purposes:

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Excerpt from du:

2890768 ./Code/Meteor/         


        

Answer 1

You can turn off preallocation by passing the --noprealloc arg to mongod. The downside is that there will be pauses each time a new storage file needs to be allocated. Depending on the filesystem you are using (e.g., ext3 vs. ext4), this could result in noticeable latency for a user.