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doc: add a note about staggering of maintenance

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Git maintenance tasks are staggered to a random minute of the hour per
client to avoid thundering herd issues. Updates the doc to add a note
about the same.

Signed-off-by: Shubham Kanodia <shubham.kanodia10@gmail.com>
Acked-by: Derrick Stolee <stolee@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Shubham Kanodia 2024-10-03 08:57:57 +00:00 committed by Junio C Hamano
parent 4f71522dfb
commit 3d6ab4177d
1 changed files with 3 additions and 1 deletions
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Documentation/git-maintenance.txt
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@ -220,7 +220,9 @@ on an hourly basis. Each run executes the "hourly" tasks. At midnight,
that process also executes the "daily" tasks. At midnight on the first day
of the week, that process also executes the "weekly" tasks. A single
process iterates over each registered repository, performing the scheduled
tasks for that frequency. Depending on the number of registered
tasks for that frequency. The processes are scheduled to a random minute of
the hour per client to spread out the load that multiple clients might
generate (e.g. from prefetching). Depending on the number of registered
repositories and their sizes, this process may take longer than an hour.
In this case, multiple `git maintenance run` commands may run on the same
repository at the same time, colliding on the object database lock. This