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BogoMips mini-Howto

Wim van Dorst

This text gives some information about BogoMips, compiled from various sources such as news and e-mail. New mini-Howto entries for unlisted CPUs will be highly appreciated. They can be send per e-mail to the author Wim van Dorst

Version V37, 2004-09-15


Table of Contents
1. Introduction
2. The highest and lowest BogoMips ratings
2.1. The highest single-CPU Linux boot sequence BogoMips value
2.2. The lowest Linux boot sequence BogoMips value
2.3. The highest multiple-CPU Linux boot sequence BogoMips value
2.4. The highest non-Linux BogoMips value
3. The frequently asked questions about BogoMips
3.1. What are BogoMips
3.2. How to estimate what the proper BogoMips rating should be
3.3. How to determine what the current BogoMips rating is
3.4. Variations in BogoMips rating
3.5. New BogoMips algorithm?
3.6. BogoMips ... failed
3.7. What about clone CPUs (Cyrix, NexGen, AMD, etc)
3.8. Why to pay attention to BogoMips
4. Compilation of ratings
4.1. 386 systems: SX, DX, Nexgen
4.2. Oddly or faultily configured 386 systems
4.3. 486 systems
4.4. Oddly or faultily configured 486 systems
4.5. 486 variations: Cyrix/IBM, UMC, Intel Overdrive
4.6. Pentium systems
4.7. Oddly or faultily configured Pentium systems
4.8. Pentium variations: Intel (MMX, Pro, II, Celeron, III, 4)
4.9. Pentium variations: Cyrix, AMD (K5/K6/K7, Duron, Athlon, Opteron), Centaur
4.10. Alpha systems
4.11. Motorola systems
4.12. Sparc systems
4.13. PowerPC systems
4.14. Other CPU systems: Mips, Intel 8088/286 ELKS, IBM, Transmeta Crusoe, PA-RISC, Hitachi SH, Arm and StrongArm, iDragon, Vax, CRIS Etrax, XScale
4.15. Multi-CPU systems (SMP2, SMP4, others)
4.16. Non-Linux systems (reference only)
5. Signature