mirror of
https://github.com/kevinveenbirkenbach/computer-playbook.git
synced 2026-11-06 10:59:59 +00:00
kevinveenbirkenbachandClaude Opus 5
a112364e17
The sidecar is the dominant cost of an onion round and almost free without it.
Measured on one Nextcloud variant at equal mode and filesystem, differing only
in the onion axis, sync pass:
test-e2e-playwright 4817s over Tor 911s on clearnet +5.3x
sys-svc-compose 2294s 2174s +120s
everything else < +25s
The whole Tor surcharge sits in one role. Tor burns no browser CPU, so a 5.3x
wall clock against identical specs on identical cores is circuit latency: the
phase waits rather than computes. The CPU divisor that sizes the clearnet count
does not describe it, and on a 4-core runner it yields exactly one worker,
which leaves the CI cap of 2 unreachable.
compute_workers takes an onion flag and, when set, multiplies the count and
caps it separately. The CI ceiling is overridden rather than respected: it
describes CPU contention, which Tor does not create. ram_workers keeps its
veto, because circuits are cheap and browsers are not.
The lookup reads the transport itself, from the same source the role derives
its own flag from, lookup(tls, application_id, url.base) tested for .onion,
following the _swarm_prefix idiom in plugins/lookup/image.py: read from
variables, render through the templar, fall back to the safe answer. One truth
about the onion state, and a caller asking for a worker count cannot forget to
pass it.
Factor 2 and cap 4 rather than more: each worker holds its own circuits and the
Tor daemon is the next bound, which no measurement here reaches. Expect the
sidecar near 2.6ks per pass instead of 4.8ks, roughly 4.4ks per onion job
against a 20.4ks budget. It does not help a clearnet round, where the sidecar
costs 911s to begin with.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>