nx_rate_ema.nx

nx_rate_ema.nx -- rolling per-peer download-rate accounting (bits-up, deterministic). module: nishi-core.torrent.rate_ema depends: nx_syscalls.nx capability: CORE_COMPUTE wired_status: FULLY_WIRED The fuel the choker runs on: tit-for-tat needs a per-peer "bytes/sec we got from them" number, and a real client must DERIVE it from raw byte counters, smoothed so one bursty interval does not flip the unchoke set. Fixed-point integer EMA (no float, no wall-clock in the math itself -- the caller passes the measured interval), so the smoothed rates -- and therefore every choke decision built on them -- stay bit-for-bit replayable. Writes straight into the choker's rates[] array (nx_ch_select_top_k consumes it unchanged).