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docs(tracing): say APS5_TRACE_USLEEP counts sceKernelUsleep calls

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TRACING.md and ENVIRONMENT.md said APS5_TRACE_USLEEP reports every
2,000 usleep calls. Only sceKernelUsleep_nid_postfix calls TraceSleep.
The guest usleep export sleeps through CancellableSleep and is never
counted. sceKernelUsleep_nid_postfix is also called by sceNetUsleep and
by the APS5_TRACE_TIMERS measurement, so those calls are counted too,
under a libSceNet or libkernel address.

Both rows now name sceKernelUsleep, list the internal callers and say
that guest usleep calls are not counted.

AI-assisted: yes
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XairRrR committed 2026-11-02 19:16:41 +01:00
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docs/dev/ENVIRONMENT.md
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@@ -662,6 +662,6 @@ The code reads environment names through `getenv`, `IsEnvironmentSet`, `kibSetti
| `APS5_TRACE_MEMORY` | presence | `core/libs/prx/libkernel/DirectMemory/DirectMemory.cpp` | | logs direct-memory map, remap, protect, unmap and physical allocation operations |
| `APS5_TRACE_SYNC` | presence | `core/libs/prx/libkernel/EventFlag/src/EventFlag.cpp` | | logs event-flag and semaphore operations |
| `APS5_TRACE_TIMERS` | presence | `core/libs/prx/libkernel/Time/Time.cpp` | | on Windows, runs a timed-wait selftest at startup and prints mean, p50 and max latencies |
| `APS5_TRACE_USLEEP` | presence | `core/libs/prx/libkernel/Time/Time.cpp` | | reports every 2000 usleep calls the guest call sites that sleep most |
| `APS5_TRACE_USLEEP` | presence | `core/libs/prx/libkernel/Time/Time.cpp` | | reports every 2000 `sceKernelUsleep` calls the call sites that sleep most, including calls through `sceNetUsleep` and the `APS5_TRACE_TIMERS` measurement; guest `usleep` calls are not counted |
| `APS5_TRACE_WAITS` | presence | `core/libs/prx/libkernel/Time/Time.cpp` | | aggregates blocking waits per guest call site and prints the longest-waiting sites every 3 s |
docs/dev/TRACING.md
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@@ -21,7 +21,7 @@ Set a switch before starting the emulator. Unless noted, any value enables it. M
| `APS5_TRACE_SYNC` | Event-flag operations and their wait and wake results. |
| `APS5_TRACE_TIMERS` | Timing measurements for the host wait primitives used by the emulator. |
| `APS5_TRACE_UDS` | Universal Data System events posted to a context, and the trophy title data it cannot find. |
| `APS5_TRACE_USLEEP` | Every 2,000 guest `usleep` calls, with caller addresses and requested delays. |
| `APS5_TRACE_USLEEP` | Every 2,000 `sceKernelUsleep` calls, the call sites that sleep most, with their call counts and requested delays. Calls made through `sceNetUsleep` and by the `APS5_TRACE_TIMERS` measurement are counted too, under a libSceNet or libkernel address. Guest `usleep` calls are not counted. |
| `APS5_TRACE_VIDEODEC` | Video decoder API calls and decode results. |
| `APS5_TRACE_WAITS` | Blocking waits aggregated by guest call site, including timeout counts and longest waits, every three seconds. |