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Profile entry and component materialization

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2026-07-17 18:28:49 +00:00
parent 3e423f49dd
commit 556bb06f81
4 changed files with 40 additions and 4 deletions
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site/doc/pages/mysql_connected.txt
+1
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@@ -17,4 +17,5 @@ if(!mysql_connected(db))
{
print("database unavailable: ", mysql_error(db), "\n");
}
else print("database connected\n");
if(db != 0) mysql_disconnect(db);
site/doc/pages/request_perf.txt
+1 -1
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@@ -15,7 +15,7 @@ Hostcall totals include component resolution. When `WASM_PROFILE_HOSTCALL_CPU=1`
Component resolution is divided into `component_path_us`, `component_artifact_us`, `component_load_us`, and `component_link_us`. These aggregate path resolution, artifact readiness/freshness, Wasmtime side-module loading, and exported-handler lookup/table placement without exposing source paths.
Successful first loads within the request are counted by `unit_load_count` and divided into `unit_module_us`, `unit_allocate_us`, `unit_import_us`, `unit_instantiate_us`, and `unit_initialize_us`. These cover compiled-module lookup, guest memory/table allocation, import construction, Wasmtime instantiation, and relocations/constructors/request binding. Repeated handlers from an already loaded unit are excluded.
Successful first loads within the request are counted by `unit_load_count` and divided into `unit_module_us`, `unit_allocate_us`, `unit_import_us`, `unit_instantiate_us`, and `unit_initialize_us`. These cover compiled-module lookup, guest memory/table allocation, import construction, Wasmtime instantiation, and relocations/constructors/request binding. `entry_unit_load_count` and `entry_unit_materialize_us` isolate the initial page/CLI unit; `dynamic_include_load_count` and `dynamic_include_materialize_us` isolate side units first requested through `component()`. The per-unit bounded list adds `kind` (`entry` or `component`) and `materialize_us`, the inclusive host-side time from module acquisition through request binding. Repeated handlers from an already loaded unit are excluded.
`unit_module_cache_hit_count` and `unit_module_cache_miss_count` divide module loads by the worker's compiled-module cache. A miss is further identified by `unit_module_serialized_cache_hit_count` when Wasmtime deserializes the current `.cwasm`; `unit_module_compile_count` means it fell back to compiling the `.wasm`. `unit_module_lookup_us`, `unit_module_read_us`, `unit_module_read_bytes`, `unit_module_parse_us`, `unit_module_compile_us`, and `unit_module_classify_us` divide `unit_module_us` into artifact stat/cache lookup, wasm metadata/full-artifact read volume, custom-section parse, deserialize-or-compile, and immutable import classification. A current serialized-module hit scans only section headers and the `dylink.0`/`uce.abi` payloads; compilation fallback reads the complete wasm. The phase sum can be below the total because allocation and cache publication overhead remain in the aggregate.