Benchmark Gentoo after rebuild world Gentoo 4.19 idem but clang Gentoo no-mitigation 5.5.4 GCC 9.3 O2 ivybridge: Processor: Intel Core i7-3615QM @ 3.30GHz (4 Cores / 8 Threads), Motherboard: Apple Mac-C3EC7CD22292981F (259.0.0.0.0 BIOS), Chipset: Intel 3rd Gen Core DRAM, Memory: 8GB, Disk: 251GB APPLE SSD SM256E, Graphics: NVIDIA GeForce GT 650M 1GB (797/2508MHz), Audio: Cirrus Logic CS4206, Monitor: Color LCD, Network: Broadcom NetXtreme BCM57786 PCIe + Broadcom BCM4331 802.11a/b/g/n OS: Gentoo 2.6, Kernel: 5.6.4-gentoo-x86_64 (x86_64), Desktop: LXQt 0.14.1, Display Server: X Server 1.20.7, Display Driver: NVIDIA 440.82, OpenGL: 4.6.0, OpenCL: OpenCL 1.2 CUDA 10.2.159, Compiler: GCC 9.3.0 + Clang 9.0.1 + LLVM 9.0.1 + CUDA 10.2, File-System: ext4, Screen Resolution: 2880x1800 Gentoo no-mitigation 5.5.4 GCC 9.3 O2 ivybridge v2: Processor: Intel Core i7-3615QM @ 3.30GHz (4 Cores / 8 Threads), Motherboard: Apple Mac-C3EC7CD22292981F (259.0.0.0.0 BIOS), Chipset: Intel 3rd Gen Core DRAM, Memory: 8GB, Disk: 251GB APPLE SSD SM256E, Graphics: NVIDIA GeForce GT 650M 1GB (797/2508MHz), Audio: Cirrus Logic CS4206, Monitor: Color LCD, Network: Broadcom NetXtreme BCM57786 PCIe + Broadcom BCM4331 802.11a/b/g/n OS: Gentoo 2.6, Kernel: 5.6.4-gentoo-x86_64 (x86_64), Desktop: LXQt 0.14.1, Display Server: X Server 1.20.7, Display Driver: NVIDIA 440.82, OpenGL: 4.6.0, OpenCL: OpenCL 1.2 CUDA 10.2.159, Compiler: GCC 9.3.0 + Clang 9.0.1 + LLVM 9.0.1 + CUDA 10.2, File-System: ext4, Screen Resolution: 2880x1800 Gentoo no-mitigation 5.5.4 GCC 9.3 O3 ivybridge: Processor: Intel Core i7-3615QM @ 3.30GHz (4 Cores / 8 Threads), Motherboard: Apple Mac-C3EC7CD22292981F (259.0.0.0.0 BIOS), Chipset: Intel 3rd Gen Core DRAM, Memory: 8GB, Disk: 251GB APPLE SSD SM256E, Graphics: NVIDIA GeForce GT 650M 1GB (797/2508MHz), Audio: Cirrus Logic CS4206, Network: Broadcom NetXtreme BCM57786 PCIe + Broadcom BCM4331 802.11a/b/g/n OS: Gentoo 2.6, Kernel: 5.6.4-gentoo-x86_64 (x86_64), Desktop: LXQt 0.14.1, Display Server: X Server 1.20.7, Display Driver: NVIDIA 440.82, OpenGL: 4.6.0, OpenCL: OpenCL 1.2 CUDA 10.2.159, Compiler: GCC 9.3.0 + Clang 9.0.1 + LLVM 9.0.1 + CUDA 10.2, File-System: ext4, Screen Resolution: 2880x1800 Gentoo no-mitigation 5.5.10 GCC 9.3 G-overlay ivybridge: Processor: Intel Core i7-3615QM @ 3.30GHz (4 Cores / 8 Threads), Motherboard: Apple Mac-C3EC7CD22292981F (259.0.0.0.0 BIOS), Chipset: Intel 3rd Gen Core DRAM, Memory: 8GB, Disk: 251GB APPLE SSD SM256E, Graphics: NVIDIA GeForce GT 650M 1GB (797/2508MHz), Audio: Cirrus Logic CS4206, Monitor: Color LCD, Network: Broadcom NetXtreme BCM57786 PCIe + Broadcom BCM4331 802.11a/b/g/n OS: Gentoo 2.6, Kernel: 5.6.10-gentoo-x86_64 (x86_64), Display Server: X Server 1.20.7, Display Driver: NVIDIA 440.82, OpenGL: 4.6.0, OpenCL: OpenCL 1.2 CUDA 10.2.159, Compiler: GCC 9.3.0 + Clang 10.0.0 + LLVM 10.0.0 + CUDA 10.2, File-System: ext4, Screen Resolution: 2880x1800 Gentoo no-mitigation 4.19.128 GCC 10.1 02 ivybridge: Processor: Intel Core i7-3615QM @ 3.30GHz (4 Cores / 8 Threads), Motherboard: Apple Mac-C3EC7CD22292981F (259.0.0.0.0 BIOS), Chipset: Intel 3rd Gen Core DRAM, Memory: 8GB, Disk: 251GB APPLE SSD SM256E, Graphics: NVIDIA GeForce GT 650M 1GB (797/2508MHz), Audio: Cirrus Logic CS4206, Monitor: Color LCD, Network: Broadcom NetXtreme BCM57786 PCIe + Broadcom BCM4331 802.11a/b/g/n OS: Gentoo 2.6, Kernel: 4.19.128-gentoo-x86_64 (x86_64), Desktop: MATE 1.24.0, Display Server: X Server 1.20.8, Display Driver: NVIDIA 440.82, OpenGL: 4.6.0, OpenCL: OpenCL 1.2 CUDA 10.2.159, Compiler: GCC 10.1.0 + Clang 10.0.0 + LLVM 10.0.0, File-System: ext4, Screen Resolution: 2880x1800 Gentoo no-mitigation 4.19.128 GCC 10.1 02 flto ivybridge: Processor: Intel Core i7-3615QM @ 3.30GHz (4 Cores / 8 Threads), Motherboard: Apple Mac-C3EC7CD22292981F (259.0.0.0.0 BIOS), Chipset: Intel 3rd Gen Core DRAM, Memory: 8GB, Disk: 251GB APPLE SSD SM256E, Graphics: NVIDIA GeForce GT 650M 1GB (797/2508MHz), Audio: Cirrus Logic CS4206, Monitor: Color LCD, Network: Broadcom NetXtreme BCM57786 PCIe + Broadcom BCM4331 802.11a/b/g/n OS: Gentoo 2.6, Kernel: 5.7.6-gentoo-x86_64 (x86_64), Desktop: MATE 1.24.0, Display Server: X Server 1.20.8, Display Driver: NVIDIA 450.51, OpenGL: 4.6.0, OpenCL: OpenCL 1.2 CUDA 11.0.197, Compiler: GCC 10.1.0 + Clang 10.0.0 + LLVM 10.0.0, File-System: ext4, Screen Resolution: 2880x1800 Gentoo no-mitigation 5.7.6 GCC 10.1 G-overlay ivybridge: Processor: Intel Core i7-3615QM @ 3.30GHz (4 Cores / 8 Threads), Motherboard: Apple Mac-C3EC7CD22292981F (259.0.0.0.0 BIOS), Chipset: Intel 3rd Gen Core DRAM, Memory: 8GB, Disk: 251GB APPLE SSD SM256E, Graphics: NVIDIA GeForce GT 650M 1GB (797/2508MHz), Audio: Cirrus Logic CS4206, Monitor: Color LCD, Network: Broadcom NetXtreme BCM57786 PCIe + Broadcom BCM4331 802.11a/b/g/n OS: Gentoo 2.6, Kernel: 5.7.6-gentoo-x86_64 (x86_64), Desktop: MATE 1.24.0, Display Server: X Server 1.20.8, Display Driver: NVIDIA 450.51, OpenGL: 4.6.0, OpenCL: OpenCL 1.2 CUDA 11.0.197, Compiler: GCC 10.1.0 + Clang 10.0.0 + LLVM 10.0.0, File-System: ext4, Screen Resolution: 2880x1800 Gentoo no-mitigation GCC 10.2 03 Clear recommendation: Processor: Intel Core i7-3615QM @ 3.30GHz (4 Cores / 8 Threads), Motherboard: Apple Mac-C3EC7CD22292981F (259.0.0.0.0 BIOS), Chipset: Intel 3rd Gen Core DRAM, Memory: 8GB, Disk: 251GB APPLE SSD SM256E, Graphics: NVIDIA NVE7 1GB (1200MHz), Audio: Cirrus Logic CS4206, Monitor: Color LCD, Network: Broadcom NetXtreme BCM57786 PCIe + Broadcom BCM4331 802.11a/b/g/n OS: Gentoo 2.6, Kernel: 5.8.0-xanmod1-x86_64clang (x86_64), Desktop: MATE 1.24.0, Display Server: X Server 1.20.8, Display Driver: nouveau 1.0.16, OpenGL: 4.3 Mesa 20.1.5, Compiler: GCC 10.2.0 + Clang 10.0.1 + LLVM 10.0.1, File-System: ext4, Screen Resolution: 2880x1800 Gentoo 4.19 idem but clang: Processor: Intel Core i7-3615QM @ 3.30GHz (4 Cores / 8 Threads), Motherboard: Apple Mac-C3EC7CD22292981F (259.0.0.0.0 BIOS), Chipset: Intel 3rd Gen Core DRAM, Memory: 8GB, Disk: 251GB APPLE SSD SM256E, Graphics: NVIDIA NVE7 1GB (1200MHz), Audio: Intel 7 /C216, Monitor: Color LCD, Network: Broadcom NetXtreme BCM57786 PCIe + Broadcom BCM4331 802.11a/b/g/n OS: Gentoo 2.6, Kernel: 4.19.138-gentootest (x86_64), Desktop: MATE 1.24.0, Display Server: X Server 1.20.8, Display Driver: nouveau 1.0.16, OpenGL: 4.3 Mesa 20.2.0-rc1, Compiler: Clang 10.0.1 + GCC 10.2.0 + LLVM 10.0.1, File-System: ext4, Screen Resolution: 2880x1800 Gentoo no-mitigation GCC 10.2 G-overlay ivybridge: Processor: Intel Core i7-3615QM @ 3.30GHz (4 Cores / 8 Threads), Motherboard: Apple Mac-C3EC7CD22292981F (259.0.0.0.0 BIOS), Chipset: Intel 3rd Gen Core DRAM, Memory: 8GB, Disk: 251GB APPLE SSD SM256E, Graphics: NVIDIA NVE7 1GB (1200MHz), Audio: Cirrus Logic CS4206, Monitor: Color LCD, Network: Broadcom NetXtreme BCM57786 PCIe + Broadcom BCM4331 802.11a/b/g/n OS: Gentoo 2.7, Kernel: 5.8.5-gentoo-x86_64 (x86_64), Desktop: MATE 1.24.0, Display Server: X Server 1.20.8, Display Driver: modesetting 1.20.8, OpenGL: 4.3 Mesa 20.2.0-rc3, Compiler: GCC 10.2.0 + Clang 10.0.1 + LLVM 10.0.1, File-System: ext4, Screen Resolution: 2880x1800 SQLite 3.30.1 Threads / Copies: 8 Seconds < Lower Is Better Gentoo no-mitigation 5.5.4 GCC 9.3 O2 ivybridge .......... 398.46 |=========== Gentoo no-mitigation 5.5.4 GCC 9.3 O2 ivybridge v2 ....... 365.47 |========== Gentoo no-mitigation 5.5.4 GCC 9.3 O3 ivybridge .......... 403.03 |=========== Gentoo no-mitigation 5.5.10 GCC 9.3 G-overlay ivybridge .. 447.43 |============ Gentoo no-mitigation 4.19.128 GCC 10.1 02 ivybridge ...... 404.24 |=========== Gentoo no-mitigation 4.19.128 GCC 10.1 02 flto ivybridge . 420.18 |=========== Gentoo no-mitigation 5.7.6 GCC 10.1 G-overlay ivybridge .. 441.46 |============ Gentoo no-mitigation GCC 10.2 03 Clear recommendation .... 254.85 |======= Gentoo 4.19 idem but clang ............................... 182.55 |===== Gentoo no-mitigation GCC 10.2 G-overlay ivybridge ........ 213.05 |====== Dbench 4.0 Client Count: 6 MB/s > Higher Is Better Gentoo no-mitigation 5.5.4 GCC 9.3 O2 ivybridge v2 ....... 124.17 |======= Gentoo no-mitigation 5.5.4 GCC 9.3 O2 ivybridge .......... 124.32 |======= Gentoo no-mitigation 5.5.4 GCC 9.3 O3 ivybridge .......... 118.49 |====== Gentoo no-mitigation 5.5.10 GCC 9.3 G-overlay ivybridge .. 107.50 |====== Gentoo no-mitigation 4.19.128 GCC 10.1 02 ivybridge ...... 115.10 |====== Gentoo no-mitigation 4.19.128 GCC 10.1 02 flto ivybridge . 113.05 |====== Gentoo no-mitigation 5.7.6 GCC 10.1 G-overlay ivybridge .. 110.93 |====== Gentoo no-mitigation GCC 10.2 03 Clear recommendation .... 177.18 |========== Gentoo 4.19 idem but clang ............................... 222.16 |============ Gentoo no-mitigation GCC 10.2 G-overlay ivybridge ........ 206.88 |=========== Threaded I/O Tester 20170503 Test: Read - Size Per Thread: 32MB - Thread Count: 8 MB/s > Higher Is Better Gentoo no-mitigation 5.5.4 GCC 9.3 O2 ivybridge v2 ....... 12042.15 |======== Gentoo no-mitigation 5.5.4 GCC 9.3 O2 ivybridge .......... 10757.00 |======= Gentoo no-mitigation 5.5.4 GCC 9.3 O3 ivybridge .......... 13458.64 |========= Gentoo no-mitigation 5.5.10 GCC 9.3 G-overlay ivybridge .. 14078.49 |========= Gentoo no-mitigation 4.19.128 GCC 10.1 02 ivybridge ...... 12313.89 |======== Gentoo no-mitigation 4.19.128 GCC 10.1 02 flto ivybridge . 11546.50 |======== Gentoo no-mitigation 5.7.6 GCC 10.1 G-overlay ivybridge .. 12315.90 |======== Gentoo no-mitigation GCC 10.2 03 Clear recommendation .... 13327.87 |========= Gentoo 4.19 idem but clang ............................... 15223.44 |========== Gentoo no-mitigation GCC 10.2 G-overlay ivybridge ........ 12636.20 |======== Threaded I/O Tester 20170503 Test: Write - Size Per Thread: 32MB - Thread Count: 8 MB/s > Higher Is Better Gentoo no-mitigation 5.5.4 GCC 9.3 O2 ivybridge v2 ....... 1.632 |======= Gentoo no-mitigation 5.5.4 GCC 9.3 O2 ivybridge .......... 1.646 |======= Gentoo no-mitigation 5.5.4 GCC 9.3 O3 ivybridge .......... 1.454 |====== Gentoo no-mitigation 5.5.10 GCC 9.3 G-overlay ivybridge .. 1.383 |====== Gentoo no-mitigation 4.19.128 GCC 10.1 02 ivybridge ...... 1.475 |====== Gentoo no-mitigation 4.19.128 GCC 10.1 02 flto ivybridge . 1.449 |====== Gentoo no-mitigation 5.7.6 GCC 10.1 G-overlay ivybridge .. 1.399 |====== Gentoo no-mitigation GCC 10.2 03 Clear recommendation .... 2.387 |========== Gentoo 4.19 idem but clang ............................... 3.100 |============= Gentoo no-mitigation GCC 10.2 G-overlay ivybridge ........ 2.479 |========== PostMark 1.51 Disk Transaction Performance TPS > Higher Is Better Gentoo no-mitigation 5.5.4 GCC 9.3 O2 ivybridge v2 ....... 4601 |============ Gentoo no-mitigation 5.5.4 GCC 9.3 O2 ivybridge .......... 4492 |============ Gentoo no-mitigation 5.5.4 GCC 9.3 O3 ivybridge .......... 4687 |============= Gentoo no-mitigation 5.5.10 GCC 9.3 G-overlay ivybridge .. 4411 |============ Gentoo no-mitigation 4.19.128 GCC 10.1 02 ivybridge ...... 5245 |============== Gentoo no-mitigation 4.19.128 GCC 10.1 02 flto ivybridge . 5001 |============= Gentoo no-mitigation 5.7.6 GCC 10.1 G-overlay ivybridge .. 5173 |============== Gentoo no-mitigation GCC 10.2 03 Clear recommendation .... 4190 |=========== Gentoo 4.19 idem but clang ............................... 4518 |============ Gentoo no-mitigation GCC 10.2 G-overlay ivybridge ........ 4934 |============= Timed HMMer Search 2.3.2 Pfam Database Search Seconds < Lower Is Better Gentoo no-mitigation 5.5.4 GCC 9.3 O2 ivybridge v2 ....... 11.10 |========== Gentoo no-mitigation 5.5.4 GCC 9.3 O2 ivybridge .......... 11.07 |========== Gentoo no-mitigation 5.5.4 GCC 9.3 O3 ivybridge .......... 11.04 |========== Gentoo no-mitigation 5.5.10 GCC 9.3 G-overlay ivybridge .. 11.40 |========== Gentoo no-mitigation 4.19.128 GCC 10.1 02 ivybridge ...... 11.04 |========== Gentoo no-mitigation 4.19.128 GCC 10.1 02 flto ivybridge . 11.10 |========== Gentoo no-mitigation 5.7.6 GCC 10.1 G-overlay ivybridge .. 11.04 |========== Gentoo no-mitigation GCC 10.2 03 Clear recommendation .... 14.44 |============= Gentoo 4.19 idem but clang ............................... 14.31 |============= Gentoo no-mitigation GCC 10.2 G-overlay ivybridge ........ 11.03 |========== Timed MAFFT Alignment 7.392 Multiple Sequence Alignment Seconds < Lower Is Better Gentoo no-mitigation 5.5.4 GCC 9.3 O2 ivybridge v2 ...... 5.451 |========== Gentoo no-mitigation 5.5.4 GCC 9.3 O2 ivybridge ......... 5.003 |========= Gentoo no-mitigation 5.5.4 GCC 9.3 O3 ivybridge ......... 5.578 |========== Gentoo no-mitigation 5.5.10 GCC 9.3 G-overlay ivybridge . 5.465 |========== Gentoo 4.19 idem but clang .............................. 7.808 |============== GNU GMP GMPbench 6.1.2 Total Time GMPbench Score > Higher Is Better Gentoo no-mitigation 5.5.4 GCC 9.3 O2 ivybridge v2 ....... 3149.3 |============ Gentoo no-mitigation 5.5.4 GCC 9.3 O2 ivybridge .......... 3148.0 |============ Gentoo no-mitigation 5.5.4 GCC 9.3 O3 ivybridge .......... 3155.4 |============ Gentoo no-mitigation 5.5.10 GCC 9.3 G-overlay ivybridge .. 3045.8 |============ Gentoo no-mitigation 4.19.128 GCC 10.1 02 ivybridge ...... 3157.5 |============ Gentoo no-mitigation 4.19.128 GCC 10.1 02 flto ivybridge . 3148.6 |============ Gentoo no-mitigation 5.7.6 GCC 10.1 G-overlay ivybridge .. 3168.8 |============ Gentoo no-mitigation GCC 10.2 03 Clear recommendation .... 3163.0 |============ Gentoo no-mitigation GCC 10.2 G-overlay ivybridge ........ 3160.2 |============ Crafty 25.2 Elapsed Time Nodes Per Second > Higher Is Better Gentoo no-mitigation 5.5.4 GCC 9.3 O2 ivybridge v2 ....... 5671088 |=========== Gentoo no-mitigation 5.5.4 GCC 9.3 O2 ivybridge .......... 5660693 |=========== Gentoo no-mitigation 5.5.4 GCC 9.3 O3 ivybridge .......... 5660977 |=========== Gentoo no-mitigation 5.5.10 GCC 9.3 G-overlay ivybridge .. 5441597 |========== Gentoo no-mitigation 4.19.128 GCC 10.1 02 ivybridge ...... 5674263 |=========== Gentoo no-mitigation 4.19.128 GCC 10.1 02 flto ivybridge . 5691269 |=========== Gentoo no-mitigation 5.7.6 GCC 10.1 G-overlay ivybridge .. 5691058 |=========== Gentoo no-mitigation GCC 10.2 03 Clear recommendation .... 5711201 |=========== Gentoo no-mitigation GCC 10.2 G-overlay ivybridge ........ 5646428 |=========== GraphicsMagick 1.3.33 Operation: Swirl Iterations Per Minute > Higher Is Better Gentoo no-mitigation 5.5.4 GCC 9.3 O2 ivybridge v2 ....... 114 |=============== Gentoo no-mitigation 5.5.4 GCC 9.3 O2 ivybridge .......... 113 |=============== Gentoo no-mitigation 5.5.4 GCC 9.3 O3 ivybridge .......... 114 |=============== Gentoo no-mitigation 5.5.10 GCC 9.3 G-overlay ivybridge .. 111 |============== Gentoo no-mitigation 4.19.128 GCC 10.1 02 ivybridge ...... 115 |=============== Gentoo no-mitigation 4.19.128 GCC 10.1 02 flto ivybridge . 113 |=============== Gentoo no-mitigation 5.7.6 GCC 10.1 G-overlay ivybridge .. 115 |=============== Gentoo no-mitigation GCC 10.2 03 Clear recommendation .... 78 |========== Gentoo 4.19 idem but clang ............................... 66 |========= Gentoo no-mitigation GCC 10.2 G-overlay ivybridge ........ 66 |========= GraphicsMagick 1.3.33 Operation: Enhanced Iterations Per Minute > Higher Is Better Gentoo no-mitigation 5.5.4 GCC 9.3 O2 ivybridge v2 ....... 43 |================ Gentoo no-mitigation 5.5.4 GCC 9.3 O2 ivybridge .......... 43 |================ Gentoo no-mitigation 5.5.4 GCC 9.3 O3 ivybridge .......... 43 |================ Gentoo no-mitigation 5.5.10 GCC 9.3 G-overlay ivybridge .. 43 |================ Gentoo no-mitigation 4.19.128 GCC 10.1 02 ivybridge ...... 44 |================ Gentoo no-mitigation 4.19.128 GCC 10.1 02 flto ivybridge . 43 |================ Gentoo no-mitigation 5.7.6 GCC 10.1 G-overlay ivybridge .. 43 |================ Gentoo no-mitigation GCC 10.2 03 Clear recommendation .... 36 |============= Gentoo 4.19 idem but clang ............................... 26 |========= Gentoo no-mitigation GCC 10.2 G-overlay ivybridge ........ 25 |========= GraphicsMagick 1.3.33 Operation: HWB Color Space Iterations Per Minute > Higher Is Better Gentoo no-mitigation 5.5.4 GCC 9.3 O2 ivybridge v2 ....... 380 |=============== Gentoo no-mitigation 5.5.4 GCC 9.3 O2 ivybridge .......... 378 |=============== Gentoo no-mitigation 5.5.4 GCC 9.3 O3 ivybridge .......... 382 |=============== Gentoo no-mitigation 5.5.10 GCC 9.3 G-overlay ivybridge .. 375 |============== Gentoo no-mitigation 4.19.128 GCC 10.1 02 ivybridge ...... 389 |=============== Gentoo no-mitigation 4.19.128 GCC 10.1 02 flto ivybridge . 385 |=============== Gentoo no-mitigation 5.7.6 GCC 10.1 G-overlay ivybridge .. 388 |=============== Gentoo no-mitigation GCC 10.2 03 Clear recommendation .... 363 |============== Gentoo 4.19 idem but clang ............................... 259 |========== Gentoo no-mitigation GCC 10.2 G-overlay ivybridge ........ 222 |========= C-Ray 1.1 Total Time - 4K, 16 Rays Per Pixel Seconds < Lower Is Better Gentoo no-mitigation 5.5.4 GCC 9.3 O2 ivybridge v2 ....... 292.15 |====== Gentoo no-mitigation 5.5.4 GCC 9.3 O2 ivybridge .......... 291.47 |====== Gentoo no-mitigation 5.5.4 GCC 9.3 O3 ivybridge .......... 291.48 |====== Gentoo no-mitigation 5.5.10 GCC 9.3 G-overlay ivybridge .. 322.24 |====== Gentoo no-mitigation 4.19.128 GCC 10.1 02 ivybridge ...... 294.51 |====== Gentoo no-mitigation 4.19.128 GCC 10.1 02 flto ivybridge . 323.77 |====== Gentoo no-mitigation 5.7.6 GCC 10.1 G-overlay ivybridge .. 291.66 |====== Gentoo no-mitigation GCC 10.2 03 Clear recommendation .... 398.98 |======== Gentoo 4.19 idem but clang ............................... 631.69 |============ Gentoo no-mitigation GCC 10.2 G-overlay ivybridge ........ 572.66 |=========== Parallel BZIP2 Compression 1.1.12 256MB File Compression Seconds < Lower Is Better Gentoo no-mitigation 5.5.4 GCC 9.3 O2 ivybridge v2 ....... 11.63 |====== Gentoo no-mitigation 5.5.4 GCC 9.3 O2 ivybridge .......... 11.54 |====== Gentoo no-mitigation 5.5.4 GCC 9.3 O3 ivybridge .......... 11.33 |====== Gentoo no-mitigation 5.5.10 GCC 9.3 G-overlay ivybridge .. 11.62 |====== Gentoo no-mitigation 4.19.128 GCC 10.1 02 ivybridge ...... 11.11 |====== Gentoo no-mitigation 4.19.128 GCC 10.1 02 flto ivybridge . 11.35 |====== Gentoo no-mitigation 5.7.6 GCC 10.1 G-overlay ivybridge .. 11.05 |====== Gentoo no-mitigation GCC 10.2 03 Clear recommendation .... 14.43 |======== Gentoo no-mitigation GCC 10.2 G-overlay ivybridge ........ 23.54 |=============