Performance Regression on initial load with Vite 6 #19171
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After upgrading from Vite 5 to Vite 6, I'm noticing a large performance regression on initial request when using Vite's developer mode. Vite 6Notice that the Vite 5I'm also noticing that the CPU is not pegged, indicating that there may have been a waterfalling regression somewhere. I'm not sure where to go from here - simple reproductions are not reproducing this issue, probably due to scale. What's the best way to hunt down the source of this? Using:
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Answered by
chrisvander
Feb 21, 2025
Replies: 2 comments 1 reply
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I this there might be a change in how export default defineConfig({
environments: {
ssr: {
dev: {
preTransformRequests: true
}
}
}
})(FYI, I was just checking the other issue related to |
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1 reply
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Unfortunately, no change in behavior. Thanks for the suggestion. |
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Not sure what changed, but the latest version of Vite 6 appears to have fixed this regression for my use-case. |
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Answer selected by
chrisvander
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Not sure what changed, but the latest version of Vite 6 appears to have fixed this regression for my use-case.