GitHub Git handshake disruption on 8 October 2026

GitHub Git handshake from Amsterdam, Mumbai, Tokyo: degraded checks; 2026-10-08 09:30 UTC to 2026-10-08 11:30 UTC: peak Git handshake 0.66 s vs a usual 0.28 s.

What our checks saw: Degraded
Cities affected: Amsterdam, Mumbai, Tokyo
When: 8 Oct, 09:30 UTC to 8 Oct, 11:30 UTC
How long: 2 hours
Slowest check: 657 ms, usually 280 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, Singapore.

Amsterdam

Each check (UTC)Usual (189 ms)Slower than usualSlow check outside the incidentIncident

Every check as a table

Time (UTC)	Check	Reading
06:30	191 ms	Normal
07:00	320 ms	Normal
07:30	334 ms	Normal
08:00	440 ms	Slower than usual
08:30	196 ms	Normal
09:00	504 ms	Much slower, or failing
09:30	442 ms	Slower than usual
10:00	333 ms	Normal
10:30	260 ms	Normal
11:00	373 ms	Normal
11:30	232 ms	Normal
12:00	760 ms	Much slower, or failing
12:30	392 ms	Normal
13:00	628 ms	Much slower, or failing
13:30	350 ms	Normal
14:00	260 ms	Normal
14:30	279 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
06:30	317 ms	Normal
07:00	259 ms	Normal
07:30	201 ms	Normal
08:00	725 ms	Much slower, or failing
08:30	198 ms	Normal
09:00	289 ms	Normal
09:30	653 ms	Much slower, or failing
10:00	311 ms	Normal
10:30	279 ms	Normal
11:00	311 ms	Normal
11:30	278 ms	Normal
12:00	318 ms	Normal
12:30	479 ms	Much slower, or failing
13:00	210 ms	Normal
13:30	288 ms	Normal
14:00	207 ms	Normal
14:30	259 ms	Normal

Mumbai

Each check (UTC)Usual (279 ms)Much slower, or failingSlow check outside the incidentIncident

Every check as a table

Time (UTC)	Check	Reading
06:30	323 ms	Normal
07:00	390 ms	Normal
07:30	332 ms	Normal
08:00	324 ms	Normal
08:30	329 ms	Normal
09:00	496 ms	Normal
09:30	818 ms	Much slower, or failing
10:00	344 ms	Normal
10:30	459 ms	Normal
11:00	503 ms	Normal
11:30	407 ms	Normal
12:00	930 ms	Much slower, or failing
12:30	757 ms	Much slower, or failing
13:00	333 ms	Normal
13:30	811 ms	Much slower, or failing
14:00	418 ms	Normal
14:30	500 ms	Normal

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