GitHub Git handshake disruption on 1 October 2026

GitHub Git handshake from Amsterdam, Mumbai, Singapore, Tokyo: degraded checks; 2026-10-01 20:00 UTC to 2026-10-01 23:00 UTC: peak Git handshake 1.25 s vs a usual 0.7 s.

What our checks saw: Degraded
Cities affected: Amsterdam, Mumbai, Singapore, Tokyo
When: 1 Oct, 20:00 UTC to 1 Oct, 23:00 UTC
How long: 3 hours
Slowest check: 1.25 s, usually 700 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 (190 ms)Much slower, or failingSlow check outside the incidentIncident

Every check as a table

Time (UTC)	Check	Reading
17:00	215 ms	Normal
17:30	277 ms	Normal
18:00	349 ms	Normal
18:30	187 ms	Normal
19:00	234 ms	Normal
19:30	522 ms	Much slower, or failing
20:00	625 ms	Much slower, or failing
20:30	195 ms	Normal
21:00	1.32 s	Much slower, or failing
21:30	211 ms	Normal
22:00	226 ms	Normal
22:30	373 ms	Normal
23:00	205 ms	Normal
23:30	181 ms	Normal
00:00	183 ms	Normal
00:30	189 ms	Normal
01:00	186 ms	Normal
01:30	172 ms	Normal
02:00	193 ms	Normal

Singapore

Each check (UTC)Usual (700 ms)Much slower, or failingSlow check outside the incidentIncident

Every check as a table

Time (UTC)	Check	Reading
17:00	732 ms	Some requests failed
17:30	787 ms	Normal
18:00	739 ms	Normal
18:30	693 ms	Normal
19:00	692 ms	Normal
19:30	1.18 s	Slower than usual
20:00	1.02 s	Normal
20:30	710 ms	Normal
21:00	1.78 s	Much slower, or failing
21:30	699 ms	Normal
22:00	728 ms	Normal
22:30	782 ms	Normal
23:00	720 ms	Normal
23:30	674 ms	Normal
00:00	696 ms	Normal
00:30	709 ms	Normal
01:00	722 ms	Normal
01:30	701 ms	Normal
02:00	728 ms	Normal

Tokyo

Each check (UTC)Usual (184 ms)Slower than usualMuch slower, or failingSlow check outside the incidentIncident

Every check as a table

Time (UTC)	Check	Reading
17:00	190 ms	Normal
17:30	266 ms	Normal
18:00	212 ms	Normal
18:30	174 ms	Normal
19:00	248 ms	Normal
19:30	575 ms	Much slower, or failing
20:00	443 ms	Slower than usual
20:30	238 ms	Normal
21:00	861 ms	Much slower, or failing
21:30	232 ms	Normal
22:00	176 ms	Normal
22:30	297 ms	Normal
23:00	167 ms	Normal
23:30	173 ms	Normal
00:00	179 ms	Normal
00:30	189 ms	Normal
01:00	178 ms	Normal
01:30	179 ms	Normal
02:00	203 ms	Normal

Mumbai

Each check (UTC)Usual (272 ms)Much slower, or failingSlow check outside the incidentIncident

Every check as a table

Time (UTC)	Check	Reading
17:00	287 ms	Normal
17:30	378 ms	Normal
18:00	296 ms	Normal
18:30	258 ms	Normal
19:00	311 ms	Normal
19:30	800 ms	Much slower, or failing
20:00	796 ms	Much slower, or failing
20:30	410 ms	Normal
21:00	1.54 s	Much slower, or failing
21:30	276 ms	Normal
22:00	272 ms	Normal
22:30	316 ms	Normal
23:00	261 ms	Normal
23:30	275 ms	Normal
00:00	272 ms	Normal
00:30	276 ms	Normal
01:00	261 ms	Normal
01:30	264 ms	Normal
02:00	268 ms	Normal

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