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| author | Kaushik Lingarkar <quic_kaushikl@quicinc.com> | 2022-12-02 13:21:02 -0800 |
|---|---|---|
| committer | Matthias Sohn <matthias.sohn@sap.com> | 2023-01-05 15:52:36 +0100 |
| commit | 82b5aaf7e3e3f881056dd2d4486e02537b0493da (patch) | |
| tree | 91ff2e5dd3d8bfe5ad054c1ddcf7ab58edf6822b /LICENSE | |
| parent | 52aa9c81fcc72961d2ecb4ecadea6d869a6f878a (diff) | |
| download | jgit-82b5aaf7e3e3f881056dd2d4486e02537b0493da.tar.gz jgit-82b5aaf7e3e3f881056dd2d4486e02537b0493da.zip | |
Introduce core.trustPackedRefsStat config
Currently, we always read packed-refs file when 'trustFolderStat'
is false. Introduce a new config 'trustPackedRefsStat' which takes
precedence over 'trustFolderStat' when reading packed refs. Possible
values for this new config are:
* always: Trust packed-refs file attributes
* after_open: Same as 'always', but refresh the file attributes of
packed-refs before trusting it
* never: Always read the packed-refs file
* unset: Fallback to 'trustFolderStat' to determine if the file
attributes of packed-refs can be trusted
Folks whose repositories are on NFS and have traditionally been
setting 'trustFolderStat=false' can now get some performance improvement
with 'trustPackedRefsStat=after_open' as it refreshes the file
attributes of packed-refs (at least on some NFS clients) before
considering it.
For example, consider a repository on NFS with ~500k packed-refs. Here
are some stats which illustrate the improvement with this new config
when reading packed refs on NFS:
trustFolderStat=true trustPackedRefsStat=unset: 0.2ms
trustFolderStat=false trustPackedRefsStat=unset: 155ms
trustFolderStat=false trustPackedRefsStat=after_open: 1.5ms
Change-Id: I00da88e4cceebbcf3475be0fc0011ff65767c111
Signed-off-by: Kaushik Lingarkar <quic_kaushikl@quicinc.com>
Diffstat (limited to 'LICENSE')
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