iOS 7: When an software update slows down (a part of) the Internet

byNicolas Guillaumeon Comments15

Today, Apple released a major upgrade to its mobile operating system : iOS7. Great news for iOS users, and some interesting data for observers of Internet performance like Cedexis.

Thanks to Cedexis Radar and its new automated alert system, our customers have noticed some late afternoon (Paris time) fluctuations in CDN quality of service (especially throughput and response time) at various points around the planet.

As we did for the jump of Baumgartner, we took a deeper look into Internet network performance data. Apples users around the world appear to be seeing slower download performance as confirmed by the Swiss operator Init7 from several locations:

Let’s view a few charts from select Internet exchange points, starting with FranceIX (located in Paris) :

The view from London IXP “Lonap” is similar, with a significant traffic peak. Apple fan are impatient for their upgrade:

Finally, looking through a U.S. carrier forum (NANOG) revealed several discussions of traffic spikes, 40% for some providers, and an additional 120Gbps of traffic load for others.

A French ISP (that has several million customers) tells us that have experienced an increase of approx 30% of its traffic from a global CDN.

There is always a risk to a large and widespread update such as this, we are keeping an eye on the social networks to see what end users who download the update have to say.

Here are Cedexis we always endorse optimizing end user experience through the usage of multiple CDNs – and especially the mix of global CDN with regional providers – to ensure consistent quality for each user.

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