fanyang 37f742272b bench: support mimalloc/jemalloc allocator in cpu_hotspot_ring example ...

Add #[global_allocator] behind feature flags so the bench can test
different allocators. Previously the example used glibc malloc by
default (easytier-core.rs sets jemalloc/mimalloc only for the bin
target, not examples).

Benchmark (4 threads, 1400B, 15s, clone mode):
  glibc:    246K pps, 3.13us/pkt
  jemalloc: 246K pps, 3.21us/pkt
  mimalloc: 242K pps, 3.25us/pkt

All within noise. Single-threaded clone has low malloc contention;
~1500B small allocs are served efficiently by all tcaches.

2026-06-28 18:03:11 +08:00

..

cpu_hotspot_ring.rs

bench: support mimalloc/jemalloc allocator in cpu_hotspot_ring example

2026-06-28 18:03:11 +08:00