Hacker News·5 min read·hard
Google's HTTP/2 codec slows Envoy
D
dilyevsky
✦AI Summary
Engineers investigated a significant CPU performance regression in the Envoy proxy after switching from the nghttp2 codec to Google's oghttp2. The analysis confirms that the new codec is less efficient for header-heavy traffic and provides insights into benchmarking methodologies for network proxies.
A while back we rolled a routine Envoy upgrade to one of our customers' dedicated proxies. Same config, same traffic, and the CPU graphs stepped up by roughly a fifth. This is the kind of chart that earns you a calendar invite with no agenda, so we decided to get ahead of it and started digging in.
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