(arxiv.org)

306 points carlos-menezes | 1 comments | 19 Oct 24 21:04 UTC | HN request time: 0s | source

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jrpelkonen ◴[19 Oct 24 22:21 UTC] No.41891238[source]▶

Curl creator/maintainer Daniel Stenberg blogged about HTTP/3 in curl a few months ago: https://daniel.haxx.se/blog/2024/06/10/http-3-in-curl-mid-20...

One of the things he highlighted was the higher CPU utilization of HTTP/3, to the point where CPU can limit throughput.

I wonder how much of this is due to the immaturity of the implementations, and how much this is inherit due to way QUIC was designed?

1. paulddraper ◴[19 Oct 24 23:58 UTC] No.41891790[source]▶

Those performance results surprised me too.

His testing has CPU-bound quiche at <200MB/s and nghttp2 was >900MB/s.

I wonder if the CPU was throttled.

Because if HTTP 3 impl took 4x CPU that could be interesting but not necessarily a big problem if the absolute value was very low to begin with.

QUIC is not quick enough over fast internet