Artturin c3c31aa798 stdenv: Improve performance ... | stat | before | after | Δ | Δ% | |------------------------|-----------------|-----------------|-----------------|---------| | cpuTime | 513.67 | 507.77 | ↘ 5.90 | -1.15% | | envs-bytes | 20,682,847,968 | 20,628,961,616 | ↘ 53,886,352 | -0.26% | | envs-elements | 1,054,735,104 | 1,051,395,620 | ↘ 3,339,484 | -0.32% | | envs-number | 765,310,446 | 763,612,291 | ↘ 1,698,155 | -0.22% | | gc-heapSize | 53,439,602,688 | 51,711,545,344 | ↘ 1,728,057,344 | -3.23% | | gc-totalBytes | 113,062,066,672 | 112,139,998,240 | ↘ 922,068,432 | -0.82% | | list-bytes | 3,118,249,784 | 3,118,249,784 | 0 | | | list-concats | 52,834,140 | 52,834,140 | 0 | | | list-elements | 389,781,223 | 389,781,223 | 0 | | | nrAvoided | 968,097,988 | 991,889,795 | ↗ 23,791,807 | 2.46% | | nrFunctionCalls | 697,259,792 | 697,259,792 | 0 | | | nrLookups | 510,257,062 | 338,275,331 | ↘ 171,981,731 | -33.70% | | nrOpUpdateValuesCopied | 1,446,690,216 | 1,446,690,216 | 0 | | | nrOpUpdates | 68,504,034 | 68,504,034 | 0 | | | nrPrimOpCalls | 429,464,805 | 429,464,805 | 0 | | | nrThunks | 1,009,240,391 | 982,109,100 | ↘ 27,131,291 | -2.69% | | sets-bytes | 33,524,722,928 | 33,524,722,928 | 0 | | | sets-elements | 1,938,309,212 | 1,938,309,212 | 0 | | | sets-number | 156,985,971 | 156,985,971 | 0 | | | sizes-Attr | 16 | 16 | 0 | | | sizes-Bindings | 16 | 16 | 0 | | | sizes-Env | 16 | 16 | 0 | | | sizes-Value | 24 | 24 | 0 | | | symbols-bytes | 2,151,298 | 2,151,298 | 0 | | | symbols-number | 159,707 | 159,707 | 0 | | | values-bytes | 30,218,194,248 | 29,567,043,264 | ↘ 651,150,984 | -2.15% | | values-number | 1,259,091,427 | 1,231,960,136 | ↘ 27,131,291 | -2.15% | > Accessing the lexical scope directly should be more efficient, yes, because it changes from a binary search (many lookups) to just two memory accesses > correction: one short linked list + one array access > oh and you had to do the lexical scope lookup anyway for lib itself > so it really does save a binary search at basically no extra cost - roberth after seeing the stats > Oooh nice. I did not consider that more of the maybeThunk optimization becomes effective (nrAvoided). Those lookups also caused allocations! - roberth Left `lib.generators` and `lib.strings` alone because they're only used once.		2023-11-12 10:42:49 +02:00
..
cross
custom
cygwin
darwin	release.nix: namespace bootstrap tools with triples	2023-10-07 19:38:01 +00:00
freebsd
generic	stdenv: Improve performance	2023-11-12 10:42:49 +02:00
linux	stdenv: fix typo	2023-10-21 00:26:57 +03:00
native
nix
tests
adapters.nix	stdenvAdapters.useMoldLinker: set allowedRequisites to null	2023-10-19 15:48:42 +03:00
booter.nix
default.nix