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Showing content from https://github.com/agda/agda/issues/5673 below:

Too many calls to stat64/lstat64 · Issue #5673 · agda/agda · GitHub

Anton Setzer wrote the following: "What is highlighted by this is the fact that Agda seems to make a lot of file access […]".

$ cat Test.agda

$ strace agda Test.agda |& egrep '^l?stat' | wc -l
1191

If I remove the files ~/.agda/libraries and ~/.agda/defaults I instead get the following numbers:

$ strace agda Test.agda |& egrep '^l?stat' | wc -l
917

$ cat test.c
int main(int argc, char **argv) {
  return 0;
}
$ strace gcc test.c -o test |& egrep '^l?stat' | wc -l
69
$ cat Test.hs
main = return ()
$ strace ghc --make Test.hs |& egrep '^l?stat' | wc -l
268

Those numbers are quite a bit lower.

I found things like the following in the output of strace agda Test.agda (I changed some directory names and omitted some lines):

stat64("/A/B/C/D/E/share/i386-linux-ghc-9.0.1/Agda-2.6.3/lib/prim", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B", {st_mode=S_IFDIR|0700, st_size=45056, ...}) = 0
lstat64("/A/B/C", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D/E", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D/E/share", {st_mode=S_IFDIR|0755, st_size=12288, ...}) = 0
lstat64("/A/B/C/D/E/share/i386-linux-ghc-9.0.1", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D/E/share/i386-linux-ghc-9.0.1/Agda-2.6.3", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D/E/share/i386-linux-ghc-9.0.1/Agda-2.6.3/lib", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D/E/share/i386-linux-ghc-9.0.1/Agda-2.6.3/lib/prim", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
openat(AT_FDCWD, "/A/B/C/D/E/share/i386-linux-ghc-9.0.1/Agda-2.6.3/lib/prim", O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_CLOEXEC|O_DIRECTORY) = 11
stat64("/A/B/C/D/E/share/i386-linux-ghc-9.0.1/Agda-2.6.3/lib/prim/..", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B", {st_mode=S_IFDIR|0700, st_size=45056, ...}) = 0
lstat64("/A/B/C", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D/E", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D/E/share", {st_mode=S_IFDIR|0755, st_size=12288, ...}) = 0
lstat64("/A/B/C/D/E/share/i386-linux-ghc-9.0.1", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D/E/share/i386-linux-ghc-9.0.1/Agda-2.6.3", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D/E/share/i386-linux-ghc-9.0.1/Agda-2.6.3/lib", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D/E/share/i386-linux-ghc-9.0.1/Agda-2.6.3/lib/prim", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
stat64("/A/B/C/D/E/share/i386-linux-ghc-9.0.1/Agda-2.6.3/lib", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B", {st_mode=S_IFDIR|0700, st_size=45056, ...}) = 0
lstat64("/A/B/C", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D/E", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D/E/share", {st_mode=S_IFDIR|0755, st_size=12288, ...}) = 0
lstat64("/A/B/C/D/E/share/i386-linux-ghc-9.0.1", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D/E/share/i386-linux-ghc-9.0.1/Agda-2.6.3", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D/E/share/i386-linux-ghc-9.0.1/Agda-2.6.3/lib", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
openat(AT_FDCWD, "/A/B/C/D/E/share/i386-linux-ghc-9.0.1/Agda-2.6.3/lib", O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_CLOEXEC|O_DIRECTORY) = 11
stat64("/A/B/C/D/E/share/i386-linux-ghc-9.0.1/Agda-2.6.3/lib/..", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B", {st_mode=S_IFDIR|0700, st_size=45056, ...}) = 0
lstat64("/A/B/C", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D/E", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D/E/share", {st_mode=S_IFDIR|0755, st_size=12288, ...}) = 0
lstat64("/A/B/C/D/E/share/i386-linux-ghc-9.0.1", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D/E/share/i386-linux-ghc-9.0.1/Agda-2.6.3", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D/E/share/i386-linux-ghc-9.0.1/Agda-2.6.3/lib", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
stat64("/A/B/C/D/E/share/i386-linux-ghc-9.0.1/Agda-2.6.3", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B", {st_mode=S_IFDIR|0700, st_size=45056, ...}) = 0
lstat64("/A/B/C", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D/E", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D/E/share", {st_mode=S_IFDIR|0755, st_size=12288, ...}) = 0
lstat64("/A/B/C/D/E/share/i386-linux-ghc-9.0.1", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D/E/share/i386-linux-ghc-9.0.1/Agda-2.6.3", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
openat(AT_FDCWD, "/A/B/C/D/E/share/i386-linux-ghc-9.0.1/Agda-2.6.3", O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_CLOEXEC|O_DIRECTORY) = 11
stat64("/A/B/C/D/E/share/i386-linux-ghc-9.0.1/Agda-2.6.3/..", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B", {st_mode=S_IFDIR|0700, st_size=45056, ...}) = 0
lstat64("/A/B/C", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D/E", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D/E/share", {st_mode=S_IFDIR|0755, st_size=12288, ...}) = 0
lstat64("/A/B/C/D/E/share/i386-linux-ghc-9.0.1", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D/E/share/i386-linux-ghc-9.0.1/Agda-2.6.3", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
stat64("/A/B/C/D/E/share/i386-linux-ghc-9.0.1", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B", {st_mode=S_IFDIR|0700, st_size=45056, ...}) = 0
lstat64("/A/B/C", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D/E", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D/E/share", {st_mode=S_IFDIR|0755, st_size=12288, ...}) = 0
lstat64("/A/B/C/D/E/share/i386-linux-ghc-9.0.1", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
openat(AT_FDCWD, "/A/B/C/D/E/share/i386-linux-ghc-9.0.1", O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_CLOEXEC|O_DIRECTORY) = 11
stat64("/A/B/C/D/E/share/i386-linux-ghc-9.0.1/..", {st_mode=S_IFDIR|0755, st_size=12288, ...}) = 0
lstat64("/A", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B", {st_mode=S_IFDIR|0700, st_size=45056, ...}) = 0
lstat64("/A/B/C", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D/E", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D/E/share", {st_mode=S_IFDIR|0755, st_size=12288, ...}) = 0
lstat64("/A/B/C/D/E/share/i386-linux-ghc-9.0.1", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
stat64("/A/B/C/D/E/share", {st_mode=S_IFDIR|0755, st_size=12288, ...}) = 0
lstat64("/A", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B", {st_mode=S_IFDIR|0700, st_size=45056, ...}) = 0
lstat64("/A/B/C", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D/E", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D/E/share", {st_mode=S_IFDIR|0755, st_size=12288, ...}) = 0
openat(AT_FDCWD, "/A/B/C/D/E/share", O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_CLOEXEC|O_DIRECTORY) = 11
stat64("/A/B/C/D/E/share/..", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B", {st_mode=S_IFDIR|0700, st_size=45056, ...}) = 0
lstat64("/A/B/C", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D/E", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D/E/share", {st_mode=S_IFDIR|0755, st_size=12288, ...}) = 0
stat64("/A/B/C/D/E", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B", {st_mode=S_IFDIR|0700, st_size=45056, ...}) = 0
lstat64("/A/B/C", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D/E", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
openat(AT_FDCWD, "/A/B/C/D/E", O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_CLOEXEC|O_DIRECTORY) = 11
stat64("/A/B/C/D/E/..", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B", {st_mode=S_IFDIR|0700, st_size=45056, ...}) = 0
lstat64("/A/B/C", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D/E", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
stat64("/A/B/C/D", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B", {st_mode=S_IFDIR|0700, st_size=45056, ...}) = 0
lstat64("/A/B/C", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
openat(AT_FDCWD, "/A/B/C/D", O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_CLOEXEC|O_DIRECTORY) = 11
stat64("/A/B/C/D/..", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B", {st_mode=S_IFDIR|0700, st_size=45056, ...}) = 0
lstat64("/A/B/C", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
stat64("/A/B/C", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B", {st_mode=S_IFDIR|0700, st_size=45056, ...}) = 0
lstat64("/A/B/C", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
openat(AT_FDCWD, "/A/B/C", O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_CLOEXEC|O_DIRECTORY) = 11
stat64("/A/B/C/..", {st_mode=S_IFDIR|0700, st_size=45056, ...}) = 0
lstat64("/A", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B", {st_mode=S_IFDIR|0700, st_size=45056, ...}) = 0
lstat64("/A/B/C", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
stat64("/A/B", {st_mode=S_IFDIR|0700, st_size=45056, ...}) = 0
lstat64("/A", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B", {st_mode=S_IFDIR|0700, st_size=45056, ...}) = 0
openat(AT_FDCWD, "/A/B", O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_CLOEXEC|O_DIRECTORY) = 11
stat64("/A/B/..", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B", {st_mode=S_IFDIR|0700, st_size=45056, ...}) = 0
stat64("/A", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
openat(AT_FDCWD, "/A", O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_CLOEXEC|O_DIRECTORY) = 11
stat64("/A/..", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
stat64("/", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
openat(AT_FDCWD, "/", O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_CLOEXEC|O_DIRECTORY) = 11
stat64("/..", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
stat64("/A", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
stat64("/A/B", {st_mode=S_IFDIR|0700, st_size=45056, ...}) = 0
lstat64("/A", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B", {st_mode=S_IFDIR|0700, st_size=45056, ...}) = 0
stat64("/A/B/C", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B", {st_mode=S_IFDIR|0700, st_size=45056, ...}) = 0
lstat64("/A/B/C", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
stat64("/A/B/C/D", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B", {st_mode=S_IFDIR|0700, st_size=45056, ...}) = 0
lstat64("/A/B/C", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
stat64("/A/B/C/D/E", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B", {st_mode=S_IFDIR|0700, st_size=45056, ...}) = 0
lstat64("/A/B/C", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D/E", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
stat64("/A/B/C/D/E/share", {st_mode=S_IFDIR|0755, st_size=12288, ...}) = 0
lstat64("/A", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B", {st_mode=S_IFDIR|0700, st_size=45056, ...}) = 0
lstat64("/A/B/C", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D/E", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D/E/share", {st_mode=S_IFDIR|0755, st_size=12288, ...}) = 0
stat64("/A/B/C/D/E/share/i386-linux-ghc-9.0.1", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B", {st_mode=S_IFDIR|0700, st_size=45056, ...}) = 0
lstat64("/A/B/C", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D/E", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D/E/share", {st_mode=S_IFDIR|0755, st_size=12288, ...}) = 0
lstat64("/A/B/C/D/E/share/i386-linux-ghc-9.0.1", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
stat64("/A/B/C/D/E/share/i386-linux-ghc-9.0.1/Agda-2.6.3", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B", {st_mode=S_IFDIR|0700, st_size=45056, ...}) = 0
lstat64("/A/B/C", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D/E", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D/E/share", {st_mode=S_IFDIR|0755, st_size=12288, ...}) = 0
lstat64("/A/B/C/D/E/share/i386-linux-ghc-9.0.1", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D/E/share/i386-linux-ghc-9.0.1/Agda-2.6.3", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
stat64("/A/B/C/D/E/share/i386-linux-ghc-9.0.1/Agda-2.6.3/lib", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B", {st_mode=S_IFDIR|0700, st_size=45056, ...}) = 0
lstat64("/A/B/C", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D/E", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D/E/share", {st_mode=S_IFDIR|0755, st_size=12288, ...}) = 0
lstat64("/A/B/C/D/E/share/i386-linux-ghc-9.0.1", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D/E/share/i386-linux-ghc-9.0.1/Agda-2.6.3", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D/E/share/i386-linux-ghc-9.0.1/Agda-2.6.3/lib", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
stat64("/A/B/C/D/E/share/i386-linux-ghc-9.0.1/Agda-2.6.3/lib/prim", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B", {st_mode=S_IFDIR|0700, st_size=45056, ...}) = 0
lstat64("/A/B/C", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D/E", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D/E/share", {st_mode=S_IFDIR|0755, st_size=12288, ...}) = 0
lstat64("/A/B/C/D/E/share/i386-linux-ghc-9.0.1", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D/E/share/i386-linux-ghc-9.0.1/Agda-2.6.3", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D/E/share/i386-linux-ghc-9.0.1/Agda-2.6.3/lib", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/A/B/C/D/E/share/i386-linux-ghc-9.0.1/Agda-2.6.3/lib/prim", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0

I think it makes sense to address the quadratic behaviour exemplified above.

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