[roll] Roll fuchsia [fxfs] Instrument LSM Tree Compaction Metrics

Add metrics to track the number of compactions, bytes written,
and compaction time.  These are tracked both on a per-store and global
basis.

To help identify write amplification issues, this also tracks the
maximum layer count, total layers added, and adds exponential
histograms for layer sizes and stack depths.

Additionally, high-frequency read path metrics (e.g. num_seeks)
have been migrated to atomics to reduce lock contention during
background compaction.

Test: fx test fxfs-tests
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1520718
Original-Revision: 7055fdf5a39175784ea2078a809353face086047
GitOrigin-RevId: 250f4eb75161d1122835d640359d202710e9ba91
Change-Id: I08b059f7a0654e496c93ff22c5a7b9eb97960fa0
1 file changed
tree: d9c0ae51db1961fb017731508e26d5887c2e144b
  1. ctf/
  2. git-hooks/
  3. infra/
  4. third_party/
  5. cobalt
  6. flower
  7. jiri.lock
  8. MILESTONE
  9. minimal
  10. prebuilts
  11. README.md
  12. stem
  13. test_durations
README.md

Integration

This repository contains Fuchsia's Global Integration manifest files.

Making changes

All changes should be made to the internal version of this repository. Our infrastructure automatically updates this version when the internal one changes.

Currently all changes must be made by a Google employee. Non-Google employees wishing to make a change can ask for assistance in one of the communication channels documented at get involved.

Obtaining the source

First install Jiri.

Next run:

$ jiri init
$ jiri import minimal https://fuchsia.googlesource.com/integration
$ jiri update

Third party

Third party projects should have their own subdirectory in ./third_party.