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fix(infra): create droplets on Ubuntu 22.04, where SIPp holds its rate - #14
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On ubuntu-24-04-x64 (kernel 6.8) SIPp 3.7.3 places ~5% fewer calls than its rate at every step (1,912/s at 2,000/s) and later sends the calls it owes in one burst; on 22.04 (kernel 5.15), same droplet size and flags, it holds the rate exactly. Measured side by side on DigitalOcean c-16 load generators on 2026-11-04. The burst made a Routr calibration report a false 2,000/s limit.
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On
ubuntu-24-04-x64(kernel 6.8) SIPp 3.7.3 places ~5% fewer calls than its rate at every step (1,912/s at 2,000/s) and later sends the calls it owes in one burst; on 22.04 (kernel 5.15), same droplet size, flags, ulimit and sysctl, it holds the rate exactly. Measured side by side on DigitalOcean c-16 load generators. The burst made a Routr calibration report a false 2,000/s limit (see #13, which now flags such a step).Verify:
npm test; plan output and provisioning tests now expectubuntu-22-04-x64.🤖 Generated with Claude Code