GitHub Git handshake disruption on 8 October 2026

GitHub Git handshake from Amsterdam, Mumbai, Singapore, Tokyo: degraded checks; 2026-10-08 16:00 UTC to 2026-10-08 19:00 UTC: peak Git handshake 1.21 s vs a usual 0.71 s.

What our checks saw: Degraded
Cities affected: Amsterdam, Mumbai, Singapore, Tokyo
When: 8 Oct, 16:00 UTC to 8 Oct, 19:00 UTC
How long: 3 hours
Slowest check: 1.21 s, usually 709 ms
GitHub's status page: Open it

Where our checks saw it

Each glowing city had slow or failing checks during the incident, shown at its worst. We test from 6 cities, so other places may have been hit too.

Our checks, city by city

Each point is one check every 30 minutes, from three hours before the incident to three hours after. Coloured points are the checks we counted as slower or failing. The shaded area shows how far above the usual time they were. Not affected: San Francisco, Montreal.

Amsterdam

Each check (UTC)Usual (189 ms)Much slower, or failingSlow check outside the incidentIncident

Every check as a table

Time (UTC)	Check	Reading
13:00	628 ms	Much slower, or failing
13:30	350 ms	Normal
14:00	260 ms	Normal
14:30	279 ms	Normal
15:00	190 ms	Normal
15:30	507 ms	Much slower, or failing
16:00	518 ms	Much slower, or failing
16:30	366 ms	Normal
17:00	1.00 s	Much slower, or failing
17:30	290 ms	Normal
18:00	279 ms	Normal
18:30	185 ms	Normal
19:00	383 ms	Normal
19:30	266 ms	Normal
20:00	218 ms	Normal
20:30	186 ms	Normal
21:00	369 ms	Normal
21:30	292 ms	Normal
22:00	223 ms	Normal

Singapore

Each check (UTC)Usual (709 ms)Slower than usualSlow check outside the incidentIncident

Every check as a table

Time (UTC)	Check	Reading
13:00	1.31 s	Slower than usual
13:30	1.07 s	Slower than usual
14:00	722 ms	Normal
14:30	763 ms	Normal
15:00	1.01 s	Normal
15:30	1.31 s	Slower than usual
16:00	1.04 s	Normal
16:30	714 ms	Normal
17:00	1.66 s	Slower than usual
17:30	759 ms	Normal
18:00	769 ms	Normal
18:30	699 ms	Normal
19:00	718 ms	Normal
19:30	709 ms	Normal
20:00	734 ms	Normal
20:30	723 ms	Normal
21:00	725 ms	Normal
21:30	727 ms	Normal
22:00	712 ms	Normal

Tokyo

Each check (UTC)Usual (188 ms)Much slower, or failingSlow check outside the incidentIncident

Every check as a table

Time (UTC)	Check	Reading
13:00	210 ms	Normal
13:30	288 ms	Normal
14:00	207 ms	Normal
14:30	259 ms	Normal
15:00	441 ms	Slower than usual
15:30	443 ms	Slower than usual
16:00	629 ms	Much slower, or failing
16:30	307 ms	Normal
17:00	1.17 s	Much slower, or failing
17:30	263 ms	Normal
18:00	262 ms	Normal
18:30	200 ms	Normal
19:00	204 ms	Normal
19:30	221 ms	Normal
20:00	226 ms	Normal
20:30	175 ms	Normal
21:00	227 ms	Normal
21:30	231 ms	Normal
22:00	253 ms	Normal

Mumbai

Each check (UTC)Usual (279 ms)Slower than usualMuch slower, or failingSlow check outside the incidentIncident

Every check as a table

Time (UTC)	Check	Reading
13:00	333 ms	Normal
13:30	811 ms	Much slower, or failing
14:00	418 ms	Normal
14:30	500 ms	Normal
15:00	325 ms	Normal
15:30	613 ms	Slower than usual
16:00	671 ms	Slower than usual
16:30	369 ms	Normal
17:00	1.22 s	Much slower, or failing
17:30	368 ms	Normal
18:00	532 ms	Slower than usual
18:30	288 ms	Normal
19:00	335 ms	Normal
19:30	278 ms	Normal
20:00	467 ms	Normal
20:30	294 ms	Normal
21:00	390 ms	Normal
21:30	292 ms	Normal
22:00	294 ms	Normal

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