diff --git a/Cargo.lock b/Cargo.lock
index 430abf92122..2d188d59f30 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -39,6 +39,26 @@ dependencies = [
  "nodrop",
 ]
 
+[[package]]
+name = "async-mutex"
+version = "1.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "479db852db25d9dbf6204e6cb6253698f175c15726470f78af0d918e99d6156e"
+dependencies = [
+ "event-listener",
+]
+
+[[package]]
+name = "async-trait"
+version = "0.1.49"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "589652ce7ccb335d1e7ecb3be145425702b290dbcb7029bbeaae263fc1d87b48"
+dependencies = [
+ "proc-macro2",
+ "quote 1.0.9",
+ "syn",
+]
+
 [[package]]
 name = "atty"
 version = "0.2.14"
@@ -127,6 +147,40 @@ version = "1.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "14c189c53d098945499cdfa7ecc63567cf3886b3332b312a5b4585d8d3a6a610"
 
+[[package]]
+name = "cached"
+version = "0.23.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5e2afe73808fbaac302e39c9754bfc3c4b4d0f99c9c240b9f4e4efc841ad1b74"
+dependencies = [
+ "async-mutex",
+ "async-trait",
+ "cached_proc_macro",
+ "cached_proc_macro_types",
+ "futures",
+ "hashbrown",
+ "once_cell",
+]
+
+[[package]]
+name = "cached_proc_macro"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bf857ae42d910aede5c5186e62684b0d7a597ce2fe3bd14448ab8f7ef439848c"
+dependencies = [
+ "async-mutex",
+ "cached_proc_macro_types",
+ "darling",
+ "quote 1.0.9",
+ "syn",
+]
+
+[[package]]
+name = "cached_proc_macro_types"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3a4f925191b4367301851c6d99b09890311d74b0d43f274c0b34c86d308a3663"
+
 [[package]]
 name = "cast"
 version = "0.2.3"
@@ -174,7 +228,7 @@ dependencies = [
  "ansi_term",
  "atty",
  "bitflags",
- "strsim",
+ "strsim 0.8.0",
  "textwrap",
  "unicode-width",
  "vec_map",
@@ -525,6 +579,41 @@ version = "0.1.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ef8ae57c4978a2acd8b869ce6b9ca1dfe817bff704c220209fdef2c0b75a01b9"
 
+[[package]]
+name = "darling"
+version = "0.10.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0d706e75d87e35569db781a9b5e2416cff1236a47ed380831f959382ccd5f858"
+dependencies = [
+ "darling_core",
+ "darling_macro",
+]
+
+[[package]]
+name = "darling_core"
+version = "0.10.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f0c960ae2da4de88a91b2d920c2a7233b400bc33cb28453a2987822d8392519b"
+dependencies = [
+ "fnv",
+ "ident_case",
+ "proc-macro2",
+ "quote 1.0.9",
+ "strsim 0.9.3",
+ "syn",
+]
+
+[[package]]
+name = "darling_macro"
+version = "0.10.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d9b5a2f4ac4969822c62224815d069952656cadc7084fdca9751e6d959189b72"
+dependencies = [
+ "darling_core",
+ "quote 1.0.9",
+ "syn",
+]
+
 [[package]]
 name = "data-encoding"
 version = "2.1.2"
@@ -562,6 +651,12 @@ dependencies = [
  "regex",
 ]
 
+[[package]]
+name = "event-listener"
+version = "2.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f7531096570974c3a9dcf9e4b8e1cede1ec26cf5046219fb3b9d897503b9be59"
+
 [[package]]
 name = "fake-simd"
 version = "0.1.2"
@@ -604,6 +699,98 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a06f77d526c1a601b7c4cdd98f54b5eaabffc14d5f2f0296febdc7f357c6d3ba"
 
+[[package]]
+name = "futures"
+version = "0.3.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a9d5813545e459ad3ca1bff9915e9ad7f1a47dc6a91b627ce321d5863b7dd253"
+dependencies = [
+ "futures-channel",
+ "futures-core",
+ "futures-executor",
+ "futures-io",
+ "futures-sink",
+ "futures-task",
+ "futures-util",
+]
+
+[[package]]
+name = "futures-channel"
+version = "0.3.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ce79c6a52a299137a6013061e0cf0e688fce5d7f1bc60125f520912fdb29ec25"
+dependencies = [
+ "futures-core",
+ "futures-sink",
+]
+
+[[package]]
+name = "futures-core"
+version = "0.3.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "098cd1c6dda6ca01650f1a37a794245eb73181d0d4d4e955e2f3c37db7af1815"
+
+[[package]]
+name = "futures-executor"
+version = "0.3.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "10f6cb7042eda00f0049b1d2080aa4b93442997ee507eb3828e8bd7577f94c9d"
+dependencies = [
+ "futures-core",
+ "futures-task",
+ "futures-util",
+]
+
+[[package]]
+name = "futures-io"
+version = "0.3.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "365a1a1fb30ea1c03a830fdb2158f5236833ac81fa0ad12fe35b29cddc35cb04"
+
+[[package]]
+name = "futures-macro"
+version = "0.3.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "668c6733a182cd7deb4f1de7ba3bf2120823835b3bcfbeacf7d2c4a773c1bb8b"
+dependencies = [
+ "proc-macro-hack",
+ "proc-macro2",
+ "quote 1.0.9",
+ "syn",
+]
+
+[[package]]
+name = "futures-sink"
+version = "0.3.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5c5629433c555de3d82861a7a4e3794a4c40040390907cfbfd7143a92a426c23"
+
+[[package]]
+name = "futures-task"
+version = "0.3.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ba7aa51095076f3ba6d9a1f702f74bd05ec65f555d70d2033d55ba8d69f581bc"
+
+[[package]]
+name = "futures-util"
+version = "0.3.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3c144ad54d60f23927f0a6b6d816e4271278b64f005ad65e4e35291d2de9c025"
+dependencies = [
+ "futures-channel",
+ "futures-core",
+ "futures-io",
+ "futures-macro",
+ "futures-sink",
+ "futures-task",
+ "memchr 2.3.4",
+ "pin-project-lite",
+ "pin-utils",
+ "proc-macro-hack",
+ "proc-macro-nested",
+ "slab",
+]
+
 [[package]]
 name = "generic-array"
 version = "0.8.4"
@@ -665,6 +852,12 @@ version = "1.7.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "62aca2aba2d62b4a7f5b33f3712cb1b0692779a56fb510499d5c0aa594daeaf3"
 
+[[package]]
+name = "hashbrown"
+version = "0.9.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d7afe4a420e3fe79967a00898cc1f4db7c8a49a9333a29f8a4bd76a253d5cd04"
+
 [[package]]
 name = "heck"
 version = "0.3.2"
@@ -700,6 +893,12 @@ dependencies = [
  "winapi 0.3.9",
 ]
 
+[[package]]
+name = "ident_case"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b9e0384b61958566e926dc50660321d12159025e767c18e043daf26b70104c39"
+
 [[package]]
 name = "if_rust_version"
 version = "1.0.0"
@@ -899,6 +1098,12 @@ version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b8f8bdf33df195859076e54ab11ee78a1b208382d3a26ec40d142ffc1ecc49ef"
 
+[[package]]
+name = "once_cell"
+version = "1.7.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "af8b08b04175473088b46763e51ee54da5f9a164bc162f615b91bc179dbf15a3"
+
 [[package]]
 name = "onig"
 version = "4.3.3"
@@ -946,6 +1151,18 @@ dependencies = [
  "proc-macro-hack",
 ]
 
+[[package]]
+name = "pin-project-lite"
+version = "0.2.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dc0e1f259c92177c30a4c9d177246edd0a3568b25756a977d0632cf8fa37e905"
+
+[[package]]
+name = "pin-utils"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8b870d8c151b6f2fb93e84a13146138f05d02ed11c7e7c54f8826aaaf7c9f184"
+
 [[package]]
 name = "pkg-config"
 version = "0.3.19"
@@ -1002,6 +1219,12 @@ version = "0.5.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dbf0c48bc1d91375ae5c3cd81e3722dff1abcf81a30960240640d223f59fe0e5"
 
+[[package]]
+name = "proc-macro-nested"
+version = "0.1.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bc881b2c22681370c6a780e47af9840ef841837bc98118431d4e1868bd0c1086"
+
 [[package]]
 name = "proc-macro2"
 version = "1.0.26"
@@ -1355,6 +1578,12 @@ dependencies = [
  "generic-array",
 ]
 
+[[package]]
+name = "slab"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c111b5bd5695e56cffe5129854aa230b39c93a305372fdbb2668ca2394eea9f8"
+
 [[package]]
 name = "smallvec"
 version = "0.6.14"
@@ -1376,6 +1605,12 @@ version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8ea5119cdb4c55b55d432abb513a0429384878c15dde60cc77b1c99de1a95a6a"
 
+[[package]]
+name = "strsim"
+version = "0.9.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6446ced80d6c486436db5c078dde11a9f73d42b57fb273121e160b84f63d894c"
+
 [[package]]
 name = "strum"
 version = "0.20.0"
@@ -1989,6 +2224,7 @@ name = "uu_ls"
 version = "0.0.6"
 dependencies = [
  "atty",
+ "cached",
  "clap",
  "globset",
  "lazy_static",
diff --git a/src/uu/ls/Cargo.toml b/src/uu/ls/Cargo.toml
index dacdc7cd9fa..5684652b1b6 100644
--- a/src/uu/ls/Cargo.toml
+++ b/src/uu/ls/Cargo.toml
@@ -15,6 +15,7 @@ edition = "2018"
 path = "src/ls.rs"
 
 [dependencies]
+cached = "0.23.0"
 clap = "2.33"
 lazy_static = "1.0.1"
 number_prefix = "0.4"
diff --git a/src/uu/ls/src/ls.rs b/src/uu/ls/src/ls.rs
index 312c83f77cf..3486f76eec2 100644
--- a/src/uu/ls/src/ls.rs
+++ b/src/uu/ls/src/ls.rs
@@ -16,6 +16,7 @@ extern crate uucore;
 mod quoting_style;
 mod version_cmp;
 
+use cached::proc_macro::cached;
 use clap::{App, Arg};
 use globset::{self, Glob, GlobSet, GlobSetBuilder};
 use number_prefix::NumberPrefix;
@@ -981,6 +982,7 @@ pub fn uumain(args: impl uucore::Args) -> i32 {
 struct PathData {
     md: std::io::Result<Metadata>,
     path_string: String,
+    name: String,
     p_buf: PathBuf,
 }
 
@@ -988,10 +990,14 @@ impl PathData {
     fn new(p_buf: PathBuf, config: &Config) -> Self {
         let md = get_metadata(&p_buf, config);
         let path_string = p_buf.to_string_lossy().into_owned();
+        let name = p_buf
+            .file_name()
+            .map_or(String::new(), |s| s.to_string_lossy().into_owned());
         // let path_name: String =
         Self {
             md,
             path_string,
+            name,
             p_buf,
         }
     }
@@ -1063,7 +1069,7 @@ fn sort_entries(entries: &mut Vec<PathData>, config: &Config) {
             entries.sort_by_key(|k| Reverse(k.md.as_ref().map(|md| md.len()).unwrap_or(0)))
         }
         // The default sort in GNU ls is case insensitive
-        Sort::Name => entries.sort_by_key(|k| k.path_string.to_lowercase()),
+        Sort::Name => entries.sort_by_key(|k| k.name.to_lowercase()),
         Sort::Version => entries.sort_by(|k, j| version_cmp::version_cmp(&k.p_buf, &j.p_buf)),
         Sort::None => {}
     }
@@ -1295,21 +1301,33 @@ fn get_inode(metadata: &Metadata) -> String {
 #[cfg(unix)]
 use uucore::entries;
 
+#[cfg(unix)]
+#[cached]
+fn cached_uid2usr(uid: u32) -> String {
+    entries::uid2usr(uid).unwrap_or_else(|_| uid.to_string())
+}
+
 #[cfg(unix)]
 fn display_uname(metadata: &Metadata, config: &Config) -> String {
     if config.long.numeric_uid_gid {
         metadata.uid().to_string()
     } else {
-        entries::uid2usr(metadata.uid()).unwrap_or_else(|_| metadata.uid().to_string())
+        cached_uid2usr(metadata.uid())
     }
 }
 
+#[cfg(unix)]
+#[cached]
+fn cached_gid2grp(gid: u32) -> String {
+    entries::gid2grp(gid).unwrap_or_else(|_| gid.to_string())
+}
+
 #[cfg(unix)]
 fn display_group(metadata: &Metadata, config: &Config) -> String {
     if config.long.numeric_uid_gid {
         metadata.gid().to_string()
     } else {
-        entries::gid2grp(metadata.gid()).unwrap_or_else(|_| metadata.gid().to_string())
+        cached_gid2grp(metadata.gid())
     }
 }