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navidpadid merged 1 commit into from
Apr 10, 2026
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docs: document Overview page sub-sections in TECHNICAL.md #60

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11 changes: 11 additions & 0 deletions docs/TECHNICAL.md
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Expand Up @@ -133,6 +133,17 @@ Overview mode includes trend lanes rendered from recent snapshot history:
Each lane uses 32 samples and block-style histogram glyphs, with one blank line
between lanes for readability.

The Overview page is divided into four sub-sections printed below the trend lanes:

- **MEMORY SNAPSHOT** — RSS, VSZ, Swap Usage, and Page Fault counts (major/minor).
- **NETWORK SNAPSHOT** — socket total, cumulative rx/tx bytes, TCP retransmits, drops, and a
top-talkers table (up to 2 sockets ranked by total bytes: FD, proto, family, RX\_BYTES,
TX\_BYTES, TOTAL\_BYTES).
- **I/O SNAPSHOT** — read\_bytes, write\_bytes, syscr, syscw, and io\_intensity (or an
aggregated `status` line when available).
- **THREAD HOTSPOTS** — total thread count and up to 3 top threads by CPU usage (columns:
TID, name, CPU%, state, priority, nice, CPU affinity).

Controls shown in the header:
- `1` - Memory section
- `2` - Network section
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