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Remove CPU telemetry (background temperature/clock speed sampling)

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The background thread that sampled CPU temperature and clock speed
during a run relied on undocumented, OS-specific interfaces: raw
AppleSMC keys on macOS, WMI ACPI thermal zones on Windows, and
/sys/class/thermal or /sys/class/hwmon on Linux. Testing on Apple
Silicon showed the SMC key scan can silently switch between different
physical sensors mid-run, producing discontinuous jumps in reported
temperature, and live per-core clock speed was never obtainable on
macOS through any public API. Disable the feature entirely rather
than ship unreliable data: drop the telemetry monitor thread, its
platform-specific sensor backends, and the telemetry field from
upload payloads. The pre-run background system-activity check
(--no-system-check) is unrelated and untouched.

Bump FB_VERSION to 0.4.2.
This commit is contained in:
owen
2026-07-21 13:53:28 -05:00
parent ec7e75e105
commit 187c902b7a
4 changed files with 9 additions and 487 deletions
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Makefile
+5 -6
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@@ -178,21 +178,20 @@ $(DIST)/fossbench-linux-ppc64le: $(DRIVER) $(DRIVER_DEPS) $(ASM_PPC64LE) | $(DIS
@echo "built $@"
$(DIST)/fossbench-macos-arm64: $(DRIVER) $(DRIVER_DEPS) $(ASM_ARM64) | $(DIST)
$(CC_MACOS_ARM64) -arch arm64 $(CFLAGS) $(PTHREAD) $(LDFLAGS) -o $@ $(DRIVER) $(ASM_ARM64) $(LDLIBS) -framework IOKit -framework CoreFoundation
$(CC_MACOS_ARM64) -arch arm64 $(CFLAGS) $(PTHREAD) $(LDFLAGS) -o $@ $(DRIVER) $(ASM_ARM64) $(LDLIBS)
@echo "built $@"
$(DIST)/fossbench-macos-amd64: $(DRIVER) $(DRIVER_DEPS) $(ASM_AMD64) | $(DIST)
MACOSX_DEPLOYMENT_TARGET=$(MACOS_AMD64_MIN) $(CC_MACOS_AMD64) -arch x86_64 -mmacosx-version-min=$(MACOS_AMD64_MIN) $(CFLAGS) $(PTHREAD) $(LDFLAGS) -Wl,-no_fixup_chains -o $@ $(DRIVER) $(ASM_AMD64) $(LDLIBS) -framework IOKit -framework CoreFoundation
MACOSX_DEPLOYMENT_TARGET=$(MACOS_AMD64_MIN) $(CC_MACOS_AMD64) -arch x86_64 -mmacosx-version-min=$(MACOS_AMD64_MIN) $(CFLAGS) $(PTHREAD) $(LDFLAGS) -Wl,-no_fixup_chains -o $@ $(DRIVER) $(ASM_AMD64) $(LDLIBS)
@echo "built $@"
# Windows builds are static and use WinHTTP. Temperature/clock telemetry
# additionally needs WMI (ole32/oleaut32/wbemuuid) and PowrProf.
# Windows builds are static and use WinHTTP.
$(DIST)/fossbench-windows-amd64.exe: $(DRIVER) $(DRIVER_DEPS) $(ASM_AMD64) | $(DIST)
$(CC_WINDOWS_AMD64) $(CFLAGS) $(PTHREAD) -static -o $@ $(DRIVER) $(ASM_AMD64) -lm -lwinhttp -ladvapi32 -lole32 -loleaut32 -lwbemuuid -lpowrprof
$(CC_WINDOWS_AMD64) $(CFLAGS) $(PTHREAD) -static -o $@ $(DRIVER) $(ASM_AMD64) -lm -lwinhttp -ladvapi32
@echo "built $@"
$(DIST)/fossbench-windows-i386.exe: $(DRIVER) $(DRIVER_DEPS) $(SRC_I386) | $(DIST)
$(CC_WINDOWS_I386) -march=i386 $(WINDOWS_I386_XP_CFLAGS) $(CFLAGS) -static $(WINDOWS_I386_XP_LDFLAGS) -o $@ $(DRIVER) $(SRC_I386) -lm -lwinhttp -ladvapi32 -lole32 -loleaut32 -lwbemuuid -lpowrprof
$(CC_WINDOWS_I386) -march=i386 $(WINDOWS_I386_XP_CFLAGS) $(CFLAGS) -static $(WINDOWS_I386_XP_LDFLAGS) -o $@ $(DRIVER) $(SRC_I386) -lm -lwinhttp -ladvapi32
@echo "built $@"
# Add a native rule if one was not already made above.