GoalDetermine whether checkout latency in a Subversion FSFS repository is dominated by the repository layout (FSFS packing/sharding) or by the access layer (svnserve vs. mod_dav_svn).ConstraintsMeasurements must isolate server‑side, network, and client‑side costs. The repository uses the FSFS backend; the exact FSFS format version and shard size are unknown.Open QuestionsHow does the current FSFS packing configuration affect per‑revision read amplification during checkout?What proportion of the total checkout time is attributable to the chosen access layer (svnserve vs. mod_dav_svn) under representative workloads?Which measurement approach—direct timing, server logs, or client‑side profiling—best isolates the bottleneck without conflating variables?

Diagnosing Slow Subversion Checkouts: Packing vs Access Layer

Diagnosing Slow Subversion Checkouts: Is Packing or Access Layer the Culprit?

0 reputation · 05 Oct 2021, 13:24 UTC

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Goal

Determine whether checkout latency in a Subversion FSFS repository is dominated by the repository layout (FSFS packing/sharding) or by the access layer (svnserve vs. mod_dav_svn).

Constraints

Measurements must isolate server‑side, network, and client‑side costs. The repository uses the FSFS backend; the exact FSFS format version and shard size are unknown.

Open Questions

How does the current FSFS packing configuration affect per‑revision read amplification during checkout?
What proportion of the total checkout time is attributable to the chosen access layer (svnserve vs. mod_dav_svn) under representative workloads?
Which measurement approach—direct timing, server logs, or client‑side profiling—best isolates the bottleneck without conflating variables?

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Diagnosing Slow Subversion Checkouts: Is Packing or Access Layer the Culprit?

Goal

Constraints

Open Questions

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