Companion for paritytech/substrate#12795 (#6374)

* Begin removing `parity-util-mem`; remove `collect_memory_stats`

* Update some dependencies that were using `parity-util-mem`

* Remove `trie-memory-tracker` feature

* Update Cargo.lock

* Update `kvdb-shared-tests`

* Add back jemalloc

* Add missing license header

* update lockfile for {"substrate"}

Co-authored-by: parity-processbot <>
Co-authored-by: Andronik <write@reusable.software>

polkadot/node/overseer/src/lib.rs

@@ -101,8 +101,6 @@ pub use polkadot_node_metrics::{
 	Metronome,
 };
 
-use parity_util_mem::MemoryAllocationTracker;
-
 pub use orchestra as gen;
 pub use orchestra::{
 	contextbounds, orchestra, subsystem, FromOrchestra, MapSubsystem, MessagePacket,
@@ -118,11 +116,14 @@ pub const KNOWN_LEAVES_CACHE_SIZE: NonZeroUsize = match NonZeroUsize::new(2 * 24
 	None => panic!("Known leaves cache size must be non-zero"),
 };
 
+mod memory_stats;
 #[cfg(test)]
 mod tests;
 
 use sp_core::traits::SpawnNamed;
 
+use memory_stats::MemoryAllocationTracker;
+
 /// Glue to connect `trait orchestra::Spawner` and `SpawnNamed` from `substrate`.
 pub struct SpawnGlue<S>(pub S);