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GitHub Git handshake disruption on 5 October 2026

GitHub Git handshake from Amsterdam, Mumbai, Tokyo: degraded checks; 2026-10-05 12:00 UTC to 2026-10-05 14:00 UTC: peak Git handshake 0.54 s vs a usual 0.28 s.

What our checks saw
Degraded
Cities affected
Amsterdam, Mumbai, Tokyo
When
to
How long
2 hours
Slowest check
539 ms, usually 276 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

Incident0 ms500 ms1.00 s09:0012:0015:00
Each check (UTC)Usual (190 ms)Much slower, or failingSlow check outside the incidentIncident
Every check as a table
Time (UTC)CheckReading
09:00233 msNormal
09:30184 msNormal
10:00535 msMuch slower, or failing
10:30314 msNormal
11:00234 msNormal
11:30171 msNormal
12:00791 msMuch slower, or failing
12:30191 msNormal
13:00568 msMuch slower, or failing
13:30193 msNormal
14:00299 msNormal
14:30216 msNormal
15:00296 msNormal
15:30209 msNormal
16:00184 msNormal
16:30196 msNormal
17:00196 msNormal

Tokyo

Incident0 ms500 ms1.00 s09:0012:0015:00
Each check (UTC)Usual (188 ms)Slower than usualMuch slower, or failingIncident
Every check as a table
Time (UTC)CheckReading
09:00321 msNormal
09:30177 msNormal
10:00215 msNormal
10:30177 msNormal
11:00186 msNormal
11:30174 msNormal
12:00833 msMuch slower, or failing
12:30188 msNormal
13:00454 msSlower than usual
13:30201 msNormal
14:00190 msNormal
14:30225 msNormal
15:00261 msNormal
15:30277 msNormal
16:00175 msNormal
16:30217 msNormal
17:00200 msNormal

Mumbai

Incident0 ms500 ms1.00 s09:0012:0015:00
Each check (UTC)Usual (276 ms)Slower than usualMuch slower, or failingIncident
Every check as a table
Time (UTC)CheckReading
09:00276 msNormal
09:30266 msNormal
10:00280 msNormal
10:30275 msNormal
11:00295 msNormal
11:30290 msNormal
12:00787 msMuch slower, or failing
12:30266 msNormal
13:00663 msSlower than usual
13:30270 msNormal
14:00268 msNormal
14:30302 msNormal
15:00308 msNormal
15:30278 msNormal
16:00259 msNormal
16:30287 msNormal
17:00303 msNormal

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