Google chops latency of its Andromeda SDN stack by 40%
Google released a new edition of its Andromeda SDN stack that reduces network latency between Compute Engine VMs by 40% over the previous version.
Andromeda 2.1, which underpins all of Google Cloud Platform (GCP), introduces a hypervisor bypass that builds on virtio, the Linux paravirtualization standard for device drivers. This enables the Compute Engine guest VM and the Andromeda software switch to communicate directly via shared memory network queues, bypassing the hypervisor completely for performance-sensitive per-packet operations.
Google noted that is has cut the latency of its SDN stack by nearly a factor of 8 since it first launched Andromeda in 2014.
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You just read about All. A technology from the archive that helped get us here:
Google/Alphabet Project Loon served 2011–2021. What ultimately replaced it?
Google/Alphabet Project Loon solar-powered balloons drifting in the stratosphere (~20 km), steering by rising and falling into different wind layers, relaying LTE from ground stations to phones far below. Its job passed to Unit economics — but the problem it solved, and the ideas it proved, live on in what replaced it. The standard rests here in the archive. One of 198 technologies here that opened a door and then held it for the next.
