.gitbay/wiki/Performance.org

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Performance

Results from a stress test of gitbay.org (2026-08-25): a server-side import of the Git project's own repository — 82,056 commits, 1,016 refs, 167MB packed — followed by timed requests against every page type. The instance is a single 1 vCPU / 1GB VPS that was concurrently running the CI runner, the mirror worker, and the scheduler.

Summary

The import took 41.5 seconds end to end. Every core page rendered in under a second against the full history; the heaviest operations — blame on a 7,000-line file and full-clone pack generation — cost what git itself costs, and nothing else. Load peaked at 0.42 and memory held near 190MB through the entire run. A full anonymous HTTPS clone of all 82,056 commits completed in 17 seconds and round-tripped with an identical commit count.

Numbers

operation time
server-side import (repo import) 41.5s
repo tree + README render 0.56s
log page (50 commits, signature checks) 0.68s
per-file history (?path=diff.c) 0.61s
directory history (?path=Documentation) 0.55s
refs page (1,016 refs) 0.61s
blob of diff.c (7k lines, 3MB highlighted) 1.57s
blame on diff.c across the full history 2.20s
content grep 0.70s
archive tar.gz (12MB) 2.46s
signed-tag commit page (unknown-key path) 0.29s
shallow HTTPS clone 3.8s
full HTTPS clone (82,056 commits) 17.2s

Why it holds

gitbay keeps no object database of its own: transports stream through git upload-pack, object reads go through git cat-file --batch, and blame, grep, and archives are the git binary doing what it already does well. The forge's own work — auth, policy, rendering — is milliseconds around that. Metadata lives in one SQLite file in WAL mode, which at this scale never appears in a profile.

The practical ceiling on this hardware is concurrent pack generation: full clones of large repositories are CPU-bound in git itself (the 17s clone ran git at ~156% CPU). limits.pack_concurrency bounds how many run at once across SSH, HTTP and git://, with a queue behind it (see Admin, [limits]).

Concurrent clones

The defaults (pack_concurrency 3, pack_per_principal 2, pack_queue 32, pack_queue_wait 60s) are set for a four-core host from the single-clone figure above; no concurrent-clone measurement backs them yet. deploy/clonebench.sh <clone-url> <n> starts n full clones at once from a machine other than the server. Anonymous clones together hold at most pack_concurrency − 1 slots, and clones from one address or account count against one principal, so an anonymous run measures those caps rather than the global one. Run it as signed-in clients (SSH keys, or HTTP with bearer tokens) from more than one account, or against an instance with pack_per_principal = -1 and read the result as the anonymous class cap.