"ctx_clock_test"

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.

Compare your own system(s) to this result file with the Phoronix Test Suite by running the command: phoronix-test-suite benchmark 1911191-HU-CTXCLOCKT53
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WithMitigations
November 19 2019
  1 Minute
WithoutMitigations
November 19 2019
  1 Minute
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  1 Minute

WithMitigations

Environment Notes: NVM_CD_FLAGS=-q
Compiler Notes: --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 Notes: Scaling Governor: intel_pstate powersave - CPU Microcode: 0xca
Security Notes: 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

Processor: Intel Core i7-8550U @ 4.00GHz (4 Cores / 8 Threads), Motherboard: LENOVO 20KHCTO1WW (N23ET65W 1.40 BIOS), Chipset: Intel Xeon E3-1200 v6/7th, Memory: 16384MB, Disk: 512GB INTEL SSDPEKKF512G8L, Graphics: Intel UHD 620 (1150MHz), Audio: Realtek ALC285, Network: Intel I219-V + Intel 8265 / 8275

OS: Arch Linux, Kernel: 5.3.11-arch1-1 (x86_64), Display Server: X Server 1.20.5 + Wayland, Display Driver: modesetting 1.20.5, Compiler: GCC 9.2.0 + Clang 9.0.0, File-System: ext4, Screen Resolution: 2560x1440

Environment Notes: NVM_CD_FLAGS=-q
Compiler Notes: --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 Notes: Scaling Governor: intel_pstate powersave - CPU Microcode: 0xca
Security Notes: 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

"ctx_clock_test"OpenBenchmarking.orgPhoronix Test SuiteIntel 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 9.0.0ext42560x1440ProcessorMotherboardChipsetMemoryDiskGraphicsAudioNetworkOSKernelDisplay ServerDisplay DriverCompilerFile-SystemScreen Resolution"ctx_clock_test" BenchmarksSystem Logs- NVM_CD_FLAGS=-q- --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 - Scaling Governor: intel_pstate powersave - CPU Microcode: 0xca- 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

ctx_clock

Ctx_clock is a simple test program to measure the context switch time in clock cycles. Learn more via the OpenBenchmarking.org test page.

OpenBenchmarking.orgClocks, Fewer Is Betterctx_clockContext Switch TimeWithMitigationsWithoutMitigations160320480640800SE +/- 0.31, N = 10751146
OpenBenchmarking.orgClocks, Fewer Is Betterctx_clockContext Switch TimeWithMitigationsWithoutMitigations130260390520650Min: 146 / Avg: 146.4 / Max: 149

WithMitigations

Environment Notes: NVM_CD_FLAGS=-q
Compiler Notes: --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 Notes: Scaling Governor: intel_pstate powersave - CPU Microcode: 0xca
Security Notes: 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

Testing initiated at 19 November 2019 20:17 by user kdryja.

WithoutMitigations

Processor: Intel Core i7-8550U @ 4.00GHz (4 Cores / 8 Threads), Motherboard: LENOVO 20KHCTO1WW (N23ET65W 1.40 BIOS), Chipset: Intel Xeon E3-1200 v6/7th, Memory: 16384MB, Disk: 512GB INTEL SSDPEKKF512G8L, Graphics: Intel UHD 620 (1150MHz), Audio: Realtek ALC285, Network: Intel I219-V + Intel 8265 / 8275

OS: Arch Linux, Kernel: 5.3.11-arch1-1 (x86_64), Display Server: X Server 1.20.5 + Wayland, Display Driver: modesetting 1.20.5, Compiler: GCC 9.2.0 + Clang 9.0.0, File-System: ext4, Screen Resolution: 2560x1440

Environment Notes: NVM_CD_FLAGS=-q
Compiler Notes: --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 Notes: Scaling Governor: intel_pstate powersave - CPU Microcode: 0xca
Security Notes: 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

Testing initiated at 19 November 2019 22:54 by user kdryja.