matthew
39323fb08d
The halt-aware send loop polled try_send on a 50 ms sleep slice when the channel was full. That capped producer throughput at 1 / 50 ms = 20 frames/sec ≈ 1 MB/s at typical PES frame sizes — way below NFS, let alone local SSD/NVMe. Multi-day diagnostic 2026-05-13/14 surfaced it as the root cause of the 18 → 3 MB/s mux throughput regression on 0.21.x. Replaced std::sync::mpsc::sync_channel with crossbeam_channel::bounded and switched send_with_halt to send_timeout. Producer now BLOCKS on consumer drain (kernel-wakeup) instead of polling — the timeout slice (250 ms) only fires when the producer is waiting for stop signal observation, never on the happy path. Result: no throughput cap from this primitive at any medium speed. Mux is bounded by actual storage / network bandwidth, not by our channel implementation. Same fix needs to land in autorip's mux.rs producer-side sync_channel (separate sibling commit). Documented in freemkv-private/memory/ feedback_send_with_halt_poll_throttle.md.
51 lines
1.5 KiB
TOML
51 lines
1.5 KiB
TOML
[package]
|
|
name = "libfreemkv"
|
|
version = "0.21.6"
|
|
edition = "2024"
|
|
rust-version = "1.86"
|
|
license = "AGPL-3.0-only"
|
|
description = "Open source raw disc access library for optical drives"
|
|
repository = "https://github.com/freemkv/libfreemkv"
|
|
keywords = ["bluray", "uhd", "optical", "scsi", "disc"]
|
|
categories = ["hardware-support", "multimedia"]
|
|
|
|
[dependencies]
|
|
serde = { version = "1", features = ["derive"] }
|
|
serde_json = "1"
|
|
sha1 = "0.10"
|
|
sha2 = "0.10"
|
|
aes = "0.8"
|
|
cbc = "0.1"
|
|
flate2 = "1"
|
|
num-bigint = "0.4"
|
|
num-traits = "0.2"
|
|
num-integer = "0.1"
|
|
rand = "0.8"
|
|
cmac = "0.7"
|
|
zip = { version = "2", default-features = false, features = ["deflate"] }
|
|
base64 = "0.22.1"
|
|
# Trace-level instrumentation for Disc::copy + SgIoTransport::execute. Permitted
|
|
# under CLAUDE.md ("Acceptable strings: debug/trace logging"). Consumers (autorip)
|
|
# wire a tracing subscriber and pipe events into the JSONL debug log.
|
|
tracing = "0.1"
|
|
# Bounded MPSC channel with kernel-wakeup send_timeout. Used by `io::pipeline`
|
|
# so the halt-aware send/finish loops can BLOCK on consumer drain instead of
|
|
# polling — the 50 ms poll cadence of the previous mpsc-based impl capped mux
|
|
# throughput at ~1 MB/s (see freemkv-private/memory/
|
|
# feedback_send_with_halt_poll_throttle.md, 0.21.7).
|
|
crossbeam-channel = "0.5"
|
|
|
|
[target.'cfg(target_os = "linux")'.dependencies]
|
|
libc = "0.2"
|
|
|
|
[target.'cfg(target_os = "macos")'.dependencies]
|
|
libc = "0.2"
|
|
|
|
[dev-dependencies]
|
|
tempfile = "3"
|
|
|
|
[[bench]]
|
|
name = "sgio_read"
|
|
harness = false
|
|
|