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

Depender (with downloads and own rev deps) TCMalloc version
512K syd optional ^0.3
34K 9 grcov optional ^0.3
650 shadowsocks-rust optional ^0.3
1 fnntw optional ^0.3.0
vproxy optional ^0.3.0