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doc/tips/Repositories_with_large_number_of_files.mdwn
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Just as git does not scale well with large files, it can also become painful to work with when you have a large *number* of files. Below are things I have found to minimise the pain. Just as git does not scale well with large files, it can also become painful to work with when you have a large *number* of files. Below are things I have found to minimise the pain.
[[!toc]]
# Using version 4 index files # Using version 4 index files
During operations which affect the index, git writes an entirely new index out to index.lck and then replaces .git/index with it. With a large number of files, this index file can be quite large and take several seconds to write every time you manipulate the index! During operations which affect the index, git writes an entirely new index out to index.lck and then replaces .git/index with it. With a large number of files, this index file can be quite large and take several seconds to write every time you manipulate the index!
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* [[forum/Handling_a_large_number_of_files]] * [[forum/Handling_a_large_number_of_files]]
* [[forum/__34__git_annex_sync__34___synced_after_8_hours]] * [[forum/__34__git_annex_sync__34___synced_after_8_hours]]
# Forget tracking information
In addition to keeping track of where files are, git-annex keeps a *log* that keeps track of where files *were*. This can take up space as well and slow down certain operations.
You can use the [[git-annex-forget]] command to drop historical location tracking info for files.
Note: this was discussed in [[forum/scalability_with_lots_of_files]].