SystemInfo::getStats() feeds the watchdog heartbeat (servers.watchdog_data),
servers_stats and the LB /api stats action, and had four defects:
- bytes_sent_total/bytes_received_total were assigned per interface, so
only the last selected interface was kept, and the received total read
tx_bytes. aggregateNetwork() now sums both totals over the same
interfaces as the per-second rates and reads rx_bytes for received.
network_speed keeps its first-positive rule and the interface selection
is unchanged, so routing capacity is not affected.
- total_running_streams was `ps ax | grep -c ffmpeg`, which counted
ffprobe and shell wrappers and missed the fanout daemon's native
remuxer. ProcessManager::countStreamProducers() now reads /proc and
counts processes whose program is ffmpeg or `xc_fanout remux`.
- The memory percentage divided by total_mem, which getMemory() reports
as 0 without MemAvailable (DivisionByZeroError), and nvidia-smi XML
with a single GPU process decodes process_info as one associative
array (TypeError). Either aborted the watchdog pass, so the node wrote
no heartbeat. memUsedPercent() and gpuProcesses() guard both.
The watchdog runs one pass per process and re-execs itself, so the
previous nginx request count held in a variable was always null and
requests_per_second was 0 on every node. CounterRateSampler keeps the
previous reading in a tmp state file (atomic replace, 120 s max age, 0
after a counter reset).
The watchdog_data key set and order are unchanged.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TQHeypQpfAXTdCysmi7b6a
