TCMalloc is used at run time in 5 crates (of which 5 optionally).

Depender (with downloads and own rev deps) TCMalloc version
495K syd optional ^0.3
33K 9 grcov optional ^0.3
750 shadowsocks-rust optional ^0.3
190 vproxy optional ^0.3.0
1 fnntw optional ^0.3.0