Open xzfc opened 1 week ago
Previously, it was taking less than 0.1 seconds to refer to a channel, but now it's 5+ seconds. Might be related: verbose output includes this line: source path '«unknown»/' is uncacheable.
source path '«unknown»/' is uncacheable
$ nix --version nix (Nix) 2.20.6 $ time nix-instantiate -I n=channel:nixos-23.05 -E --eval "<n>" /nix/store/qinxwzj1pxwg37i5x89kh2m7iap5svqa-source real 0m0.029s user 0m0.013s sys 0m0.011s $ nix-instantiate -vvvv -I n=channel:nixos-23.05 -E --eval "(import <n> {}).lib.fakeHash" |& ts -s 00:00:00 evaluating file '<nix/derivation-internal.nix>' 00:00:00 performing daemon worker op: 11 00:00:00 acquiring write lock on '/nix/var/nix/temproots/1007652' 00:00:00 performing daemon worker op: 1 00:00:00 using cache entry '{"name":"source","type":"tarball","url":"https://nixos.org/channels/nixos-23.05/nixexprs.tar.xz"}' -> '{"etag":"\"3609b92639bb1b75344c6300d9513105\"","lastModified":1704616576}', '/nix/store/qinxwzj1pxwg37i5x89kh2m7iap5svqa-source' 00:00:00 resolved search path element 'channel:nixos-23.05' to '/nix/store/qinxwzj1pxwg37i5x89kh2m7iap5svqa-source' 00:00:00 /nix/store/qinxwzj1pxwg37i5x89kh2m7iap5svqa-source
$ nix --version nix (Nix) 2.22.1 $ time nix-instantiate -I n=channel:nixos-23.05 -E --eval "<n>" /nix/store/qinxwzj1pxwg37i5x89kh2m7iap5svqa-source real 0m5.354s user 0m2.459s sys 0m0.660s $ nix-instantiate -vvvv -I n=channel:nixos-23.05 -E --eval "(import <n> {}).lib.fakeHash" |& ts -s 00:00:00 evaluating file '<nix/derivation-internal.nix>' 00:00:00 using cache entry '{"_what":"tarballCache","url":"https://nixos.org/channels/nixos-23.05/nixexprs.tar.xz"}' -> '{"etag":"\"3609b92639bb1b75344c6300d9513105\"","lastModified":1704616576,"treeHash":"81fbe527509ebdf4d35a954750efa488ebff2aed"}' 00:00:00 source path '«unknown»/' is uncacheable 00:00:00 copying '«unknown»/' to the store... 00:00:00 performing daemon worker op: 7 00:00:03 acquiring write lock on '/nix/var/nix/temproots/1005446' 00:00:05 resolved search path element 'channel:nixos-23.05' to '/nix/store/qinxwzj1pxwg37i5x89kh2m7iap5svqa-source' 00:00:05 /nix/store/qinxwzj1pxwg37i5x89kh2m7iap5svqa-source
Add :+1: to issues you find important.
Previously, it was taking less than 0.1 seconds to refer to a channel, but now it's 5+ seconds. Might be related: verbose output includes this line:
source path '«unknown»/' is uncacheable
.Old (fast)
New (slow)
Priorities
Add :+1: to issues you find important.