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Profile request execution phases

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udo
2026-07-16 15:12:13 +00:00
parent 62adc7a6a9
commit dc5ccee805
4 changed files with 85 additions and 19 deletions
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site/demo/index.uce
+9 -2
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@@ -91,8 +91,15 @@ RENDER(Request& context)
print("Accept us: ", (f64)perf["accept_us"].to_f64(), "\n");
print("Running us: ", (f64)perf["running_us"].to_f64(), "\n");
print("Total us: ", (f64)perf["total_us"].to_f64(), "\n");
if(perf["workspace_birth_us"].type != 'S')
print("Workspace birth us: ", (u64)perf["workspace_birth_us"].to_u64(), "\n");
print("Dispatch us: ", (u64)perf["dispatch_us"].to_u64(), "\n");
print("Workspace setup us: ", (u64)perf["workspace_setup_us"].to_u64(), "\n");
print("Workspace birth us: ", (u64)perf["workspace_birth_us"].to_u64(), "\n");
print("Context apply us: ", (u64)perf["context_apply_us"].to_u64(), "\n");
print("Guest us: ", (f64)perf["guest_us"].to_f64(), "\n");
print("Hostcalls: ", (u64)perf["hostcall_count"].to_u64(), " / ", (u64)perf["hostcall_us"].to_u64(), " us\n");
print("MySQL hostcalls: ", (u64)perf["mysql_hostcall_count"].to_u64(), " / ", (u64)perf["mysql_hostcall_us"].to_u64(), " us\n");
print("Memcache hostcalls: ", (u64)perf["memcache_hostcall_count"].to_u64(), " / ", (u64)perf["memcache_hostcall_us"].to_u64(), " us\n");
print("Component resolves: ", (u64)perf["component_resolve_count"].to_u64(), " / ", (u64)perf["component_resolve_us"].to_u64(), " us\n");
print("Output buffer size: ", context.ob->str().length(), "\n");
?></pre>
</div>
site/doc/pages/request_perf.txt
+1 -1
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@@ -9,7 +9,7 @@ return value : performance snapshot for the active request/workspace
>time_precise
:content
Returns a DValue with timing and process metadata such as worker pid, parent pid, request count, request start times, and workspace birth timing when available.
Returns a DValue with timing and process metadata such as worker pid, parent pid, request count, request start times, native dispatch, workspace setup and birth, context application, guest execution, and hostcall timing. Hostcall totals include component resolution; MySQL, memcache, and component resolution also expose their own count and microsecond fields. The profiling hostcall itself is excluded from those totals so repeated snapshots remain comparable.
:example
DValue perf = request_perf();
site/tests/io.uce
+5 -2
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@@ -151,11 +151,14 @@ RENDER(Request& context)
check("to_u64() / to_s64() / to_f64() / to_bool()", to_u64(cfg["u64"], 7) == 42 && to_u64(cfg["bad"], 7) == 7 && to_s64(cfg["s64"], 5) == -12 && to_s64(cfg["bad"], 5) == 5 && to_f64(cfg["f64"], 1.0) > 3.49 && to_f64(cfg["bad"], 1.25) == 1.25 && to_bool(cfg["yes"], false) && !to_bool(cfg["no"], true) && !to_bool("unknown", false), var_dump(cfg));
DValue perf = request_perf();
bool perf_stable = perf["worker_pid"].to_u64() > 0 && perf["running_us"].to_f64() > 0;
bool perf_stable = perf["worker_pid"].to_u64() > 0 && perf["running_us"].to_f64() > 0 && perf["dispatch_us"].type != 'S' && perf["workspace_setup_us"].type != 'S' && perf["workspace_birth_us"].type != 'S' && perf["context_apply_us"].type != 'S' && perf["hostcall_count"].to_u64() > 0 && perf["hostcall_us"].type != 'S' && perf["guest_us"].to_f64() > 0 && perf["component_resolve_count"].type != 'S';
u64 profiled_hostcalls = perf["hostcall_count"].to_u64();
f64 profiled_hostcall_us = perf["hostcall_us"].to_f64();
u64 profiled_components = perf["component_resolve_count"].to_u64();
for(u64 i = 0; i < 512 && perf_stable; i++)
{
perf = request_perf();
perf_stable = perf["worker_pid"].to_u64() > 0 && perf["running_us"].to_f64() > 0;
perf_stable = perf["worker_pid"].to_u64() > 0 && perf["running_us"].to_f64() > 0 && perf["dispatch_us"].type != 'S' && perf["workspace_setup_us"].type != 'S' && perf["workspace_birth_us"].type != 'S' && perf["context_apply_us"].type != 'S' && perf["hostcall_count"].to_u64() == profiled_hostcalls && perf["hostcall_us"].to_f64() == profiled_hostcall_us && perf["guest_us"].to_f64() > 0 && perf["component_resolve_count"].to_u64() == profiled_components;
}
check("request_perf() stages stable repeated snapshots", perf_stable, json_encode(perf));