| ▲ | jiggawatts 9 hours ago | ||||||||||||||||
Meanwhile the best network I’ve ever benchmarked was AWS and measured about 55µs for a round trip! What on earth are you using that gets you down to single digits!? | |||||||||||||||||
| ▲ | Galanwe 2 hours ago | parent | next [-] | ||||||||||||||||
> the best network I’ve ever benchmarked was AWS and measured about 55µs for a round trip What is "a network" here? Few infrastructures are optimised for latency, most are geared toward providing high throughput instead. In fact, apart from HFT, I don't think most businesses are all that latency sensitive. Most infrastructure providers will give you SLAs of high single or low double digits microseconds from Mahwa/Carteret to NY4, but these are private/dedicated links. There's little point to optimising latency when your network ends up on internet where the smallest hops are milliseconds away. | |||||||||||||||||
| ▲ | crest 6 hours ago | parent | prev | next [-] | ||||||||||||||||
I assume 1-3 hops of modern switches without congestion. Given 100Gb/s lanes these numbers are possible if you get all the bottlenecks out of the way. The moment you hit a deep queue the latency explodes. | |||||||||||||||||
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| ▲ | 6 hours ago | parent | prev | next [-] | ||||||||||||||||
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| ▲ | blibble 3 hours ago | parent | prev [-] | ||||||||||||||||
that's because cloud networks are complete shit this is xilinux/mellanox cards with kernel bypass and cut-through switches with busy-waiting in reality, in a prod system | |||||||||||||||||