[master] Update Git, drop MIDX writes #1421
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See microsoft/git#168 for full details. Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
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The multi-pack-index write is taking a lot of memory. Instead of writing it with every prefetch (every hour) let's write it during the packfile maintenance step (once a day). This will lead to a few packs not covered by the multi-pack-index between runs, but that will not be a huge loss to performance. Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
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Should the Milestone on this PR be M157 since it's targeting |
wilbaker
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Aug 6, 2019
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/azp run PR - Windows - Functional Tests (Sparse Mode) |
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Azure Pipelines successfully started running 1 pipeline(s). |
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This PR does two things:
Updates Git to include the slow commit-graph write fix from commit: remove parse_commit_no_graph() git#168. Also see [M153 Hotfix] Update Git to revert slow commit-graph write #1420 for the M153 hotfix.
Removes the multi-pack-index writes from the
PostFetchStepand instead only writes the multi-pack-index during thePackfileMaintenanceStep. In order to get the most out of the step, we need to ensure we have a multi-pack-index before running theexpireandrepacksteps. Also, we can only expire the packs from that day if they are contained in the multi-pack-index.If we agree that we should send (2) as a hotfix to the M155 release (in addition to (1), which is necessary), then I'll create a hotfix PR to that branch.