"ctxclocktest"

Intel Core i7-8550U testing with a LENOVO 20KHCTO1WW (N23ET65W 1.40 BIOS) and Intel UHD 620 on Arch Linux via the Phoronix Test Suite.

HTML result view exported from: https://openbenchmarking.org/result/1911199-HU-CTXCLOCKT56.

"ctxclocktest"ProcessorMotherboardChipsetMemoryDiskGraphicsAudioNetworkOSKernelDisplay ServerDisplay DriverCompilerFile-SystemScreen ResolutionWithMitigationsWithoutMitigationsWithMitigations2WithMitgations3WithMitigations4Intel Core i7-8550U @ 4.00GHz (4 Cores / 8 Threads)LENOVO 20KHCTO1WW (N23ET65W 1.40 BIOS)Intel Xeon E3-1200 v6/7th16384MB512GB INTEL SSDPEKKF512G8LIntel UHD 620 (1150MHz)Realtek ALC285Intel I219-V + Intel 8265 / 8275Arch Linux5.3.11-arch1-1 (x86_64)X Server 1.20.5 + Waylandmodesetting 1.20.5GCC 9.2.0 + Clang 9.0.0ext42560x1440OpenBenchmarking.orgEnvironment Details- NVM_CD_FLAGS=-qCompiler Details- --disable-libssp --disable-libstdcxx-pch --disable-libunwind-exceptions --disable-werror --enable-__cxa_atexit --enable-cet=auto --enable-checking=release --enable-clocale=gnu --enable-default-pie --enable-default-ssp --enable-gnu-indirect-function --enable-gnu-unique-object --enable-install-libiberty --enable-languages=c,c++,ada,fortran,go,lto,objc,obj-c++,d --enable-lto --enable-multilib --enable-plugin --enable-shared --enable-threads=posix --mandir=/usr/share/man --with-isl --with-linker-hash-style=gnu Processor Details- Scaling Governor: intel_pstate powersave - CPU Microcode: 0xcaSecurity Details- WithMitigations: itlb_multihit: KVM: Mitigation of Split huge pages + l1tf: Mitigation of PTE Inversion; VMX: conditional cache flushes SMT vulnerable + mds: Mitigation of Clear buffers; SMT vulnerable + meltdown: Mitigation of PTI + spec_store_bypass: Mitigation of SSB disabled via prctl and seccomp + spectre_v1: Mitigation of usercopy/swapgs barriers and __user pointer sanitization + spectre_v2: Mitigation of Full generic retpoline IBPB: conditional IBRS_FW STIBP: conditional RSB filling + tsx_async_abort: Not affected - WithoutMitigations: itlb_multihit: KVM: Vulnerable + l1tf: Mitigation of PTE Inversion; VMX: vulnerable + mds: Vulnerable; SMT vulnerable + meltdown: Vulnerable + spec_store_bypass: Vulnerable + spectre_v1: Vulnerable: __user pointer sanitization and usercopy barriers only; no swapgs barriers + spectre_v2: Vulnerable IBPB: disabled STIBP: disabled + tsx_async_abort: Not affected - WithMitigations2: itlb_multihit: KVM: Mitigation of Split huge pages + l1tf: Mitigation of PTE Inversion; VMX: conditional cache flushes SMT vulnerable + mds: Mitigation of Clear buffers; SMT vulnerable + meltdown: Mitigation of PTI + spec_store_bypass: Mitigation of SSB disabled via prctl and seccomp + spectre_v1: Mitigation of usercopy/swapgs barriers and __user pointer sanitization + spectre_v2: Mitigation of Full generic retpoline IBPB: conditional IBRS_FW STIBP: conditional RSB filling + tsx_async_abort: Not affected - WithMitgations3: itlb_multihit: KVM: Mitigation of Split huge pages + l1tf: Mitigation of PTE Inversion; VMX: conditional cache flushes SMT vulnerable + mds: Mitigation of Clear buffers; SMT vulnerable + meltdown: Mitigation of PTI + spec_store_bypass: Mitigation of SSB disabled via prctl and seccomp + spectre_v1: Mitigation of usercopy/swapgs barriers and __user pointer sanitization + spectre_v2: Mitigation of Full generic retpoline IBPB: conditional IBRS_FW STIBP: conditional RSB filling + tsx_async_abort: Not affected - WithMitigations4: itlb_multihit: KVM: Mitigation of Split huge pages + l1tf: Mitigation of PTE Inversion; VMX: conditional cache flushes SMT vulnerable + mds: Mitigation of Clear buffers; SMT vulnerable + meltdown: Mitigation of PTI + spec_store_bypass: Mitigation of SSB disabled via prctl and seccomp + spectre_v1: Mitigation of usercopy/swapgs barriers and __user pointer sanitization + spectre_v2: Mitigation of Full generic retpoline IBPB: conditional IBRS_FW STIBP: conditional RSB filling + tsx_async_abort: Not affected

"ctxclocktest"ctx-clock: Context Switch TimeDifferenceStandard ErrorStandard DeviationWithMitigationsWithoutMitigationsWithMitigations2WithMitgations3WithMitigations47511.00x1461.81x0.310.66%7501.00xOpenBenchmarking.org

ctx_clock

Context Switch Time

OpenBenchmarking.orgClocks, Fewer Is Betterctx_clockContext Switch TimeWithMitigationsWithoutMitigationsWithMitigations4160320480640800SE +/- 0.31, N = 10751146750

Phoronix Test Suite v10.8.4