forked from wrenn/wrenn
pptx704
1178ab8b21
Three issues fixed: 1. Memory metrics read host-side VmRSS of the Firecracker process, which includes guest page cache and never decreases. Replaced readMemRSS(fcPID) with readEnvdMemUsed(client) that queries envd's /metrics endpoint for guest-side total - MemAvailable. This matches neofetch and reflects actual process memory. 2. Added Firecracker balloon device (deflate_on_oom, 5s stats) and envd-side periodic page cache reclaimer (drop_caches when >80% used). Reclaimer is gated by snapshot_in_progress flag with sync() before freeze to prevent memory corruption during pause. 3. Sampling interval 500ms → 1s, ring buffer capacities adjusted to maintain same time windows. Reduces per-host HTTP load from 240 calls/sec to 120 calls/sec at 120 capsules. Also: maxDiffGenerations 8 → 1 (merge every re-pause since UFFD lazy-loads anyway), envd mem_used formula uses total - available.