GitHub Git handshake disruption on 9 October 2026

GitHub Git handshake from Amsterdam, Mumbai, Singapore: degraded checks; 2026-10-09 09:00 UTC to 2026-10-09 13:00 UTC: peak Git handshake 1.2 s vs a usual 0.71 s.

What our checks saw: Degraded
Cities affected: Amsterdam, Mumbai, Singapore
When: 9 Oct, 09:00 UTC to 9 Oct, 13:00 UTC
How long: 4 hours
Slowest check: 1.20 s, usually 711 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, Tokyo.

Amsterdam

Each check (UTC)Usual (190 ms)Much slower, or failingSlow check outside the incidentIncident

Every check as a table

Time (UTC)	Check	Reading
06:00	416 ms	Normal
06:30	282 ms	Normal
07:00	263 ms	Normal
07:30	211 ms	Normal
08:00	317 ms	Normal
08:30	171 ms	Normal
09:00	1.22 s	Much slower, or failing
09:30	187 ms	Normal
10:00	430 ms	Normal
10:30	223 ms	Normal
11:00	887 ms	Much slower, or failing
11:30	401 ms	Normal
12:00	260 ms	Normal
12:30	201 ms	Normal
13:00	464 ms	Slower than usual
13:30	509 ms	Much slower, or failing
14:00	324 ms	Normal
14:30	288 ms	Normal
15:00	277 ms	Normal
15:30	203 ms	Normal
16:00	566 ms	Much slower, or failing

Singapore

Each check (UTC)Usual (711 ms)Slower than usualIncident

Every check as a table

Time (UTC)	Check	Reading
06:00	742 ms	Normal
06:30	696 ms	Normal
07:00	760 ms	Normal
07:30	720 ms	Normal
08:00	783 ms	Normal
08:30	704 ms	Normal
09:00	1.66 s	Slower than usual
09:30	734 ms	Normal
10:00	814 ms	Normal
10:30	730 ms	Normal
11:00	907 ms	Normal
11:30	725 ms	Normal
12:00	1.24 s	Slower than usual
12:30	1.16 s	Slower than usual
13:00	751 ms	Normal
13:30	814 ms	Normal
14:00	785 ms	Normal
14:30	760 ms	Normal
15:00	827 ms	Normal
15:30	750 ms	Normal
16:00	729 ms	Normal

Mumbai

Each check (UTC)Usual (280 ms)Much slower, or failingSlow check outside the incidentIncident

Every check as a table

Time (UTC)	Check	Reading
06:00	389 ms	Normal
06:30	352 ms	Normal
07:00	470 ms	Normal
07:30	407 ms	Normal
08:00	909 ms	Much slower, or failing
08:30	400 ms	Normal
09:00	754 ms	Much slower, or failing
09:30	370 ms	Normal
10:00	383 ms	Normal
10:30	409 ms	Normal
11:00	712 ms	Much slower, or failing
11:30	300 ms	Normal
12:00	476 ms	Normal
12:30	305 ms	Normal
13:00	824 ms	Much slower, or failing
13:30	600 ms	Slower than usual
14:00	561 ms	Slower than usual
14:30	285 ms	Normal
15:00	353 ms	Normal
15:30	270 ms	Normal
16:00	324 ms	Normal

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