77 lines
3.0 KiB
Markdown
77 lines
3.0 KiB
Markdown
|
JIT Stats JSON Schema — Version 1
|
||
|
|
=================================
|
||
|
|
|
||
|
|
This document describes the fields emitted in the JIT statistics JSON outputs (version=1).
|
||
|
|
|
||
|
|
Sources
|
||
|
|
- Unified JIT stats (VM-side): printed when `NYASH_JIT_STATS_JSON=1` (or CLI equivalent)
|
||
|
|
- Box API: `new JitStatsBox().toJson()` returns a compact JSON, `summary()` returns a pretty JSON summary (via VM dispatch)
|
||
|
|
|
||
|
|
Version
|
||
|
|
- `version`: number — Schema version (currently `1`)
|
||
|
|
|
||
|
|
Unified JIT Stats (JSON)
|
||
|
|
- `version`: number — Schema version (1)
|
||
|
|
- `sites`: number — Number of JIT call sites observed
|
||
|
|
- `compiled`: number — Count of functions compiled by the JIT
|
||
|
|
- `hits`: number — Sum of entries across all functions (hotness hits)
|
||
|
|
- `exec_ok`: number — Count of successful JIT executions
|
||
|
|
- `trap`: number — Count of JIT executions that trapped and fell back to VM
|
||
|
|
- `fallback_rate`: number — Ratio `trap / (exec_ok + trap)` (0 when denominator is 0)
|
||
|
|
- `handles`: number — Current number of live JIT handles in the registry
|
||
|
|
- `abi_mode`: string — `"i64_bool"` or `"b1_bool"` (when toolchain supports b1)
|
||
|
|
- `abi_b1_enabled`: boolean — Whether b1 ABI is requested by config
|
||
|
|
- `abi_b1_supported`: boolean — Whether current toolchain supports b1 in signatures
|
||
|
|
- `b1_norm_count`: number — Count of b1 normalizations (e.g., i64!=0 to b1)
|
||
|
|
- `ret_bool_hint_count`: number — Count of functions lowered with return-bool hint
|
||
|
|
- `phi_total_slots`: number — Total PHI slots encountered (always-on, LowerCore-based)
|
||
|
|
- `phi_b1_slots`: number — PHI slots classified as boolean (heuristics)
|
||
|
|
- `top5`: array of objects — Top hot functions
|
||
|
|
- `name`: string
|
||
|
|
- `hits`: number
|
||
|
|
- `compiled`: boolean
|
||
|
|
- `handle`: number (0 when not compiled)
|
||
|
|
|
||
|
|
Compact Box JSON — `JitStatsBox.toJson()`
|
||
|
|
- `version`: number — Schema version (1)
|
||
|
|
- `abi_mode`: string — Current ABI mode for booleans (see above)
|
||
|
|
- `abi_b1_enabled`: boolean — Whether b1 ABI is requested by config
|
||
|
|
- `abi_b1_supported`: boolean — Whether current toolchain supports b1 in signatures
|
||
|
|
- `b1_norm_count`: number — b1 normalizations count
|
||
|
|
- `ret_bool_hint_count`: number — return-bool hint count
|
||
|
|
- `phi_total_slots`: number — Total PHI slots (accumulated)
|
||
|
|
- `phi_b1_slots`: number — Boolean PHI slots (accumulated)
|
||
|
|
|
||
|
|
Summary Box JSON — `JitStatsBox.summary()`
|
||
|
|
- Pretty-printed JSON containing:
|
||
|
|
- All fields from `toJson()`
|
||
|
|
- `top5`: same structure as unified stats
|
||
|
|
|
||
|
|
Notes
|
||
|
|
- Counters reflect process-lifetime totals (reset only on process start).
|
||
|
|
- `phi_*` counters are accumulated per LowerCore invocation (function lower), independent of dump flags.
|
||
|
|
- `abi_mode` switches to `b1_bool` when toolchain support is detected and b1 ABI is enabled.
|
||
|
|
|
||
|
|
Examples
|
||
|
|
```
|
||
|
|
{
|
||
|
|
"version": 1,
|
||
|
|
"sites": 1,
|
||
|
|
"compiled": 0,
|
||
|
|
"hits": 1,
|
||
|
|
"exec_ok": 0,
|
||
|
|
"trap": 0,
|
||
|
|
"fallback_rate": 0.0,
|
||
|
|
"handles": 0,
|
||
|
|
"abi_mode": "i64_bool",
|
||
|
|
"abi_b1_enabled": false,
|
||
|
|
"abi_b1_supported": false,
|
||
|
|
"b1_norm_count": 0,
|
||
|
|
"ret_bool_hint_count": 0,
|
||
|
|
"phi_total_slots": 2,
|
||
|
|
"phi_b1_slots": 1,
|
||
|
|
"top5": [ { "name": "main", "hits": 1, "compiled": false, "handle": 0 } ]
|
||
|
|
}
|
||
|
|
```
|
||
|
|
|