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lib: reduce startup time #20567
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lib: reduce startup time #20567
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string_decoder: lazy loaded
BridgeAR d480b63
querystring: lazy loaded
BridgeAR 5c144fa
readline: lazy loaded
BridgeAR a18174b
os: lazy loaded
BridgeAR 02c3b4b
dns: lazy loaded
BridgeAR 9168e15
bootstrap: only load inspector stuff if necessary
BridgeAR 1dfa4ec
esm: lazy load necessary loaders
BridgeAR 246ab38
cluster: remove obsolete array allocation
BridgeAR e8ae9a4
trace_events: lazy loaded
BridgeAR ce21afd
lib: use capital letters in comments
BridgeAR a093ed3
bootstrap: remove unnecessary require
BridgeAR 4733c2a
tools: stricter eslint rule for globals
BridgeAR e0080ce
assert,util: lazy load comparison functions
BridgeAR bd96a9d
async_hook: lazy loading for startup performance
BridgeAR d31581f
bootstrap: do not call performance hooks
BridgeAR 0093e0d
stream: lazy load ReadableAsyncIterator
BridgeAR 0b31adc
console: lazy load cli
BridgeAR 5c3a245
stream: lazy load end-of-stream
BridgeAR b0bbbba
net: lazy load dns
BridgeAR 3ca0b58
test: add loaded modules test
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Instead of this, you could assign
isDeepEqual
a function that loads and then overwrites itself. That way you can be sure you caught all the use sites.There was a problem hiding this comment.
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@hashseed Can we just use something like
And use
lazyComparison()
everywhere for simplicy? I guess V8 should be able to inline that?There was a problem hiding this comment.
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You would have to use
lazyComparison()(args)
the way you defined it. Inlining shouldn't be an issue here.I'd even go a bit further and define a wrapper that can be reused:
You can then use this to load
comparison
:I wonder though whether inlining that would be an issue. @bmeurer
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I just ran benchmarks on all three of the variations and looking at the numbers it seems like everything gets inlined (both ways). Depending on how I write the benchmark, the outcome is favorable for some other different versions.
Without the if block,
a
is the winner with ~450ms vs ~500ms. With the if block,b
is the winner with ~450ms vs ~500ms.I personally normally use it the way as is right now but I see the point for it being error prone. Even though it also some times allows to only lazy load once outside of a loop instead of running a function in a hot loop.
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I guess we should agree on one specific way how to do this. I do not have a strong opinion (anymore) and would like to let others decide which one to pick.
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I like Yang's way if it is fast.