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info: Added calculation of combined annex size of all repositories

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Factored out overLocationLogs from CmdLine.Seek, which can calculate this
pretty fast even in a large repo. In my big repo, the time to run git-annex
info went up from 1.33s to 8.5s.

Note that the "backend usage" stats are for annexed files in the working
tree only, not all annexed files. This new data source would let that be
changed, but that would be a confusing behavior change. And I cannot
retitle it either, out of fear something uses the current title (eg parsing
the json).

Also note that, while time says "402108maxresident" in my big repo now,
up from "54092maxresident", top shows the RES constant at 64mb, and it
was 48mb before. So I don't think there is a memory leak. I tried using
deepseq to force full evaluation of addKeyCopies and memory use didn't
change, which also says no memory leak. And indeed, not even calling
addKeyCopies resulted in the same memory use. Probably the increased memory
usage is buffering the stream of data from git in overLocationLogs.

Sponsored-by: Brett Eisenberg on Patreon
This commit is contained in:
Joey Hess 2023-11-08 13:15:00 -04:00
parent 8768966d97
commit 11cc9f1933
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5 changed files with 90 additions and 24 deletions
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doc/git-annex-info.mdwn
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@ -12,8 +12,8 @@ Displays statistics and other information for the specified item.
When no item is specified, displays overall information. This includes a
list of all known repositories, how much annexed data is present in the
local repository, and the total size of all annexed data in the working
tree.
local repository, the total size of all annexed data in the working
tree, and the combined size of all annexed data in all known repositories.
When a directory is specified, displays information
about the annexed files in that directory (and subdirectories).