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GitHub Git handshake disruption on 8 October 2026

GitHub Git handshake from Amsterdam, Mumbai, San Francisco, Tokyo: degraded checks; 2026-10-08 01:00 UTC to 2026-10-08 03:00 UTC: peak Git handshake 0.94 s vs a usual 0.19 s.

What our checks saw
Degraded
Cities affected
Amsterdam, Mumbai, San Francisco, Tokyo
When
to
How long
2 hours
Slowest check
940 ms, usually 190 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: Montreal, Singapore.

Amsterdam

Incident0 ms1.00 s2.00 s22:0001:0004:00
Each check (UTC)Usual (190 ms)Slow check outside the incidentIncident
Every check as a table
Time (UTC)CheckReading
22:001.00 sMuch slower, or failing
22:30254 msNormal
23:00304 msNormal
23:30196 msNormal
00:00221 msNormal
00:301.69 sMuch slower, or failing
01:00191 msNormal
01:30182 msNormal
02:00229 msNormal
02:30179 msNormal
03:00189 msNormal
03:30177 msNormal
04:00249 msNormal
04:30181 msNormal
05:00247 msNormal
05:30178 msNormal
06:00263 msNormal

San Francisco

Incident0 ms750 ms1.50 s22:0001:0004:00
Each check (UTC)Usual (235 ms)Much slower, or failingIncident
Every check as a table
Time (UTC)CheckReading
22:00234 msNormal
22:30241 msNormal
23:00220 msNormal
23:30293 msNormal
00:00349 msNormal
00:30248 msNormal
01:001.14 sMuch slower, or failing
01:30229 msNormal
02:00222 msNormal
02:30294 msNormal
03:00238 msNormal
03:30226 msNormal
04:00221 msNormal
04:30234 msNormal
05:00307 msNormal
05:30237 msNormal
06:00332 msNormal

Tokyo

Incident0 ms750 ms1.50 s22:0001:0004:00
Each check (UTC)Usual (188 ms)Slow check outside the incidentIncident
Every check as a table
Time (UTC)CheckReading
22:00876 msMuch slower, or failing
22:30208 msNormal
23:00355 msNormal
23:30189 msNormal
00:00190 msNormal
00:30993 msMuch slower, or failing
01:00177 msNormal
01:30198 msNormal
02:00205 msNormal
02:30182 msNormal
03:00182 msNormal
03:30189 msNormal
04:00188 msNormal
04:30197 msNormal
05:00202 msNormal
05:30190 msNormal
06:00187 msNormal

Mumbai

Incident0 ms750 ms1.50 s22:0001:0004:00
Each check (UTC)Usual (279 ms)Slow check outside the incidentIncident
Every check as a table
Time (UTC)CheckReading
22:001.33 sMuch slower, or failing
22:30350 msNormal
23:00460 msNormal
23:30271 msNormal
00:00325 msNormal
00:301.22 sMuch slower, or failing
01:00275 msNormal
01:30282 msNormal
02:00313 msNormal
02:30294 msNormal
03:00344 msNormal
03:30294 msNormal
04:00258 msNormal
04:30294 msNormal
05:00303 msNormal
05:30293 msNormal
06:00335 msNormal

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