How to configure BZMiner for low-latency mining? (Efficiency)

Understanding BZMiner Architecture

1. BZMiner is built with a modular event-driven core that processes share submissions and pool communications through asynchronous I/O channels.

2. Its internal scheduler prioritizes network packet handling over GPU kernel dispatching when latency thresholds fall below 12ms.

3. The miner uses memory-mapped buffers between the stratum client and CUDA runtime to eliminate redundant memcpy operations during job transitions.

4. Each mining thread maintains its own lightweight context, avoiding global mutex contention during nonce generation.

5. Configuration parameters like --stratum-notify-mode 2 enable binary job updates instead of JSON parsing, reducing per-job overhead by up to 40%.

Network Stack Optimization

1. Binding BZMiner to a dedicated NIC interface using --net-if eth1 isolates mining traffic from system background noise.

2. Disabling Nagle’s algorithm via --tcp-nodelay 1 ensures immediate transmission of stratum notify packets without buffering delays.

3. Setting --keepalive-interval 5 forces persistent TCP keepalive probes every five seconds, preventing middlebox-induced connection stalls.

4. Enabling UDP-based job delivery with --stratum-udp bypasses TCP handshake latency for job pushes, though it requires pool-side support.

5. Configuring --dns-resolver local routes DNS queries through a local stub resolver instead of external servers, cutting resolution time from ~80ms to under 5ms.

GPU Execution Tuning

1. Using --gpu-fan 75 maintains consistent thermal headroom, preventing clock throttling that introduces variable kernel launch latency.

2. Specifying --gpu-clock 1200 locks the memory clock at a stable frequency, eliminating dynamic scaling jitter during DAG initialization.

3. Enabling --no-gpu-dag-prealloc defers full DAG allocation until the first valid job arrives, shortening initial sync time by 1.8 seconds on 24GB cards.

4. Applying --gpu-threads 2 restricts concurrent kernel launches per device, reducing context-switch pressure on the GPU scheduler.

5. Setting --kernel-launch-delay 0 removes artificial inter-kernel gaps, allowing back-to-back execution when jobs arrive in rapid succession.

Stratum Protocol Refinements

1. Activating --stratum-v2 enables session multiplexing and compressed job encoding, cutting average job size from 1.2KB to 380B.

2. Using --submit-stale 0 discards shares generated after a new job announcement, enforcing strict freshness without post-submission validation latency.

3. Configuring --reconnect-delay 0.3 initiates reconnection attempts within 300ms of disconnect detection, minimizing downtime during pool failover.

4. Enabling --stratum-compact compresses job payloads using LZ4, reducing wire-time serialization by 62% on high-latency links.

5. Setting --share-verify-mode 1 performs partial share verification locally before submission, rejecting invalid shares before network round-trip occurs.

Frequently Asked Questions

Q: Does BZMiner support hardware-accelerated TLS for encrypted stratum connections?A: Yes. When compiled with OpenSSL 3.0+ and AES-NI enabled, BZMiner offloads TLS record encryption to CPU instruction sets, adding less than 0.4ms per encrypted job submission.

Q: Can BZMiner operate with sub-10ms ping times to pools without custom kernel modules?A: Yes. Latency below 10ms is achievable using standard Linux kernels when combined with --net-priority realtime and IRQ affinity binding to isolated CPU cores.

Q: Is there a way to measure actual submission latency per share inside BZMiner?A: Yes. Enabling --log-share-latency writes microsecond-precision timestamps for job receipt, nonce found, and submission acknowledgment into the debug log.

Q: Does BZMiner adjust its behavior automatically when detecting high RTT to the pool?A: No. BZMiner does not auto-tune based on observed RTT. All latency-sensitive parameters must be manually configured per pool environment using static flags.