E00: Instrument calibration

Planned E00 1 run

Question: Does Globalping’s first-byte time include the handshakes, and do curl, Globalping and the footer probe agree?
Prediction: Globalping’s phases add up to its total. curl and Globalping agree within ~10 ms. The footer shows a fake TTFB after a quick reload (browser cache) and reports only the last hop as “Edge to origin”. Written before the first run.
Method: curl from a laptop (20 fresh connections), Globalping from the same city, and the footer read by hand.
Scripts: experiments/e00-calibration

Results

Run 8 Oct 2026, 07:51 UTCGlobalping HTTP, curl

Globalping, Jakarta: do the phases add up? If dns+tcp+tls+firstByte+download ≈ total, firstByte excludes the handshakes.
Probe network	PoP	Cache	DNS	TCP	TLS	First byte	Download	Sum of phases	Total
JARINGANKU SARANA NUSANTARA	NRT	HIT	0	87	100	108	1	296	296
Netciti Persada	CGK	HIT	1	4	13	11	2	31	31
Telekomunikasi Indonesia	MRS	HIT	23	168	177	179	0	547	547

curl from your machine, 40 requests (medians). tcp = connect − dns, tls = appconnect − connect, ttfb = starttransfer − appconnect.
Path	DNS	TCP (RTT)	TLS	TTFB after handshake	Total
/	8.8	71.5	91.8	137.7	435.4
/__probe	8.2	70.8	89	174.9	339.7

Not run yet.