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Topic: BogoMips


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In the News (Sun 27 Dec 09)

  
  Sparc Linux BogoMips Page
BogoMips was named "Bogo"Mips for a reason; it's totally bogus as a benchmark.
For example, before the Pentium, the bogomips value of a 386 and a 486 was vastly different, even at the same clock speed.
And yes, bogomips are pretty bogus indeed - for the most part, I've noticed that, particularly on the Sparc Linux implementation thereof, the bogomips value is almost always the same or very close to the Mhz rating of the CPU.
www.obsolyte.com /bogomips.html   (660 words)

  
 What is bogomips? - a definition from Whatis.com
You compare the bogomips for your computer with what they ought to be for your computer's particular type of processor.
Torvalds named the program BogoMips (for "bogus (or fake) MIPs") to suggest that performance measurements between two computers can be misleading because not all contributing factors are stated or even understood.
Bogomips measures how many times the processor goes through a particular programming loop in a second.
searchenterpriselinux.techtarget.com /sDefinition/0,,sid39_gci211685,00.html   (383 words)

  
  Linux.com - The frequently asked questions about BogoMips
The BogoMips calculation loop for the non Intel CPUs is similar but not the same, because it is programmed in another assembler language.
BogoMips is however the only portable way over the various CPUs (Intel-type and non Intel-type) for getting an indication of the CPU speed.
This affects the BogoMips rating for all Intel and AMD Pentium variations, resulting in approximately 2*clock, if they were not 2*clock already.
www.linux.com /howtos/BogoMips/bogo-faq.shtml   (1535 words)

  
 BogoMIPS - LinuxMIPS
BogoMIPS used to be the infamous, prestigious benchmark for Linux machines over a decade.
The BogoMIPS number for any given processor architecture is basically proportional to the clock rate.
The purpose of the BogoMIPS benchmark is to calibrate internal delay loops which are used for very short delays or in situations where a process can't sleep.
www.linux-mips.org /wiki/BogoMIPS   (312 words)

  
 Linuxbroker - BogoMips.html
Hence, the BogoMips value gives some indication of the processor speed, but it is way too unscientific to be called anything but BogoMips.
The BogoMips calculation loop for the non Intel CPUs is similar but not the same, because it is programmed in another assembler language.
BogoMips is however the only portable way over the various CPUs (Intel-type and non Intel-type) for getting an indication of the CPU speed.
howtos.linuxbroker.com /howtoreader.php?file=BogoMips.html   (2109 words)

  
 What is bogomips? - a definition from Whatis.com
You compare the bogomips for your computer with what they ought to be for your computer's particular type of processor.
Torvalds named the program BogoMips (for "bogus (or fake) MIPs") to suggest that performance measurements between two computers can be misleading because not all contributing factors are stated or even understood.
Bogomips measures how many times the processor goes through a particular programming loop in a second.
searchopensource.techtarget.com /sDefinition/0,,sid39_gci211685,00.html   (359 words)

  
 BogoMIPS
The number of million times a second a processor can do absolutely nothing.
Linux OS measures BogoMIPS at startup in order to calibrate some soft timing loops that will be used later on; details at the BogoMIPS mini-HOWTO.
The name Linus chose, of course, is an ironic comment on the uselessness of all other
www.catb.org /~esr/jargon/html/B/BogoMIPS.html   (54 words)

  
 The Quintessential Linux Benchmark | Linux Journal
Note that BogoMips have nothing to do with the million instructions per second that the name suggests; that is why they are bogus.
The only serious reason for paying attention to the BogoMips presented on booting Linux is to see whether it is in the proper range for the particular processor, its clock frequency, and the potentially present cache.
More than 250 BogoMips references as reported on Usenet, or sent directly by e-mail to the maintainer, are listed with information about CPU type, clock speed, BogoMips, and the name and e-mail address of the reporter.
www.linuxjournal.com /article/1120   (964 words)

  
 BogoMips mini-Howto
This text, initially started back in 1993 as BogoMips Information Sheet, is retrievable in the most up-to-date version from its homepage at www.clifton.nl, and from the various Linux archives in the file.../HOWTO/mini/BogoMips.
The BogoMips is also explained in The Jargon File.
The following are the lowest and the highest BogoMips ratings, as reported directly to me, or published on Usenet.
www.faqs.org /docs/Linux-mini/BogoMips.html   (1934 words)

  
 Linux.com - BogoMips mini-Howto
Added legal stuff, updated and enhanced revhistory, various improvements to the XML markup, general text editing, plenty of new entries and some corrections, and a new highest (6800.58), which is the real reason for a new update; added new section; added the translators' names; added a colofon; added birthdate of BogoMips (11 July 1993).
The mini-howto text gives information about BogoMips, compiled from various sources such as news and e-mail.
New BogoMips entries for the mini-Howto, notably for unlisted CPUs, will be highly appreciated.
www.linux.com /howtos/BogoMips/index.shtml   (299 words)

  
 BogoMips - Wikipedia, the free encyclopedia
The given ratio is the typical ratio for that CPU with the then current Linux version.
The changed BogoMips outcome had no effect on real processor performance.
Full and complete information and details about BogoMips, and hundreds of reference entries can be found in the BogoMips mini-Howto (see below).
en.wikipedia.org /wiki/BogoMips   (239 words)

  
 SGI TPL View (BogoMips)
This text gives some information about BogoMips, compiled from various sources such as news and e-mail.
What did change in kernel version 2.2.14 is the CPU state setting just before the BogoMips calculation.
This affects the BogoMips rating for all Intel and AMD Pentium variations, resulting in approximately 2*clock, where these were not 2*clock.
techpubs.sgi.com /tpl.cgi/view/linux/HOWTO/BogoMips   (1719 words)

  
 Bogo Mips   (Site not responding. Last check: 2007-10-13)
The reasons (there are two) it is printed during bootup is that a) it is slightly useful for debugging and for checking that the computers caches and turbo button work, and b) Linus loves to chuckle when he sees confused people on the news.
BogoMips is short for "bogus, meaningless indication of processor speed".
As I understand it, it's not any sort of benchmark, because wall time is not one of the things it's calibrated against; instead it measures the ratio of two of the computer's clocks, or something weird like that.
c2.com /cgi/wiki?BogoMips   (291 words)

  
 [No title]
BogoMips mini-Howto Wim van Dorst, baron@clifton.hobby.nl 1997-12-13 This text gives some information about BogoMips, compiled from various sources such as news and e-mail.
"Bogomips" is a stanĀ­ dalone program that displays your system performance using one of the world's most recognized benchmarks.
Version 1.3 of BogoMIPs is now portable and should run on any system that supports an ANSI C compiler and library.' Note that due to system load values calculated with the standalone program may be lower than registered in the list below.
www2.ci-n.com /docs/howto/mini/BogoMips   (1876 words)

  
 BogoMIPS drama - LinuxQuestions.org
I know that this bogoMIPS are dependent upon the machine and so on.
On an average, your BOGOMIPS should be about twice your clock speed.
Well the room temperature could not change significantly.I regularly moniter the CPU temperature through bios and it is in "acceptable" region(30-35C).
www.linuxquestions.org /questions/showthread.php?t=56527   (564 words)

  
 [No title]   (Site not responding. Last check: 2007-10-13)
BogoMips mini-Howto Wim van Dorst This text gives some information about BogoMips, compiled from various sources such as news and e-mail.
Introduction This text, initially started back in 1993 as BogoMips Information Sheet, is retrievable in the most up-to-date version from its homepage at [http:// www.clifton.nl] www.clifton.nl, and from the various Linux archives.
Variations in BogoMips rating From Linus Torvalds, torvalds@cc.helsinki.fi, explaining about the variation one may see in the BogoMips rating, in c.o.l.development, at 28 April 1994 `The BogoMips calculation loop is "quantizised", so you're most likely to get the exact same number all the time.
mirrors.atn.ro /LDP/HOWTO/text/BogoMips   (3042 words)

  
 BogoMips mini-Howto: How to determine what the current BogoMips rating is   (Site not responding. Last check: 2007-10-13)
BogoMips mini-Howto: How to determine what the current BogoMips rating is
There are three methods to determing the current BogoMips, viz.
And non determinative alternative may be, also applicable for non-Linux systems, such as Crays an so on, the standalone BogoMips program.
www.astro.uni-bonn.de /~webstw/cm/ldp/minihowto/BogoMips-4.html   (210 words)

  
 [No title]
BogoMips are being determined in /usr/src/linux/init/main.c (simple C
BogoMips is however the only portable way over the various CPUs
BogoMips rating that is presented on booting Linux:
www.linuxrx.com /HOWTO/sunsite-sources/mini/BogoMips.html   (2038 words)

  
 submit@en.tldp.org
Apart from some interesting, new entries, I also took the effort to upgrade the document from Linuxdoc to full-blown Docbook.
And all e-mail addresses have been anti-spam manipulated: replace @_ with @ for the original reporter.
System BogoMips Reporter 386DX/16 387 nocache 0.57 H. Peter Anvin 386DX/25 0.82 P Wright 386DX/25 nocache 1.03 Mark A. Horton 386SX/16 1.5 Stefan Kromer 386SX/16 1.6 Bill Davidsen 386SX/20 1.87 Paul C. Dulany 386SX/20 2.45 Roger Harkess 386DX/25(?) 128c 6.03 Chuck Meo 386DX/20 13 Ed Runnion
lists.tldp.org /index.cgi?5:mss:9234:200409:oghhemnfmpffhcfafkdd   (1837 words)

  
 Simon's Home Page   (Site not responding. Last check: 2007-10-13)
Here it is for your edification the definitive bogomips table which should be consulted in $1M+ hardware purchase situations 8-) Totally un-Netscapafied, in fact totally devoid of any HTML from the title on !!
Gimme, Gimme, Gimme ------------------- If you have a bogomips rating for a machine, mail it on in, to sjlai@broncho.ct.monash.edu.au.
Candidates : Anything that runs an interpreted language, which cannot run bogomips out of the box.
www.csse.monash.edu.au /~cavram/bogomips.html   (360 words)

  
 BogoMips mini-Howto   (Site not responding. Last check: 2007-10-13)
ent...] "Bogomips" is a standalone program that displays your system performance using one of the world's most recognized benchmarks.
System BogoMips Reporter 386DX/16 387 nocache 0.57 H. Peter Anvin enthpa@nwu.eduent 386DX/25 0.82 P Wright entphilip.wright@purplet.demon.co.ukent 386DX/25 nocache 1.03 Mark A. Horton entmahmha@crl.coment 386SX/16 1.5 Stefan Kromer entsk@galaxy.sunflower.sub.orgent 386SX/16 1.6 Bill Davidsen entdavidsen@tmr.coment 386SX/20 1.87 Paul C. Dulany entpcdulany@wam.umd.eduent 386SX/20 2.45 Roger Harkess entroger@visi.coment 386DX/25(?) 128c 6.03 Chuck Meo entmeo@solbourne.coment 386DX/20 13 Ed Runnion enterunnio@hubcap.clemson.eduent
for the life time of this BogoMips mini-Howto, neigh on ten years.
www.cs.wisc.edu /niagara/data/lindoc/BogoMips.xml   (1795 words)

  
 [No title]
BogoMips mini-Howto Wim van Dorst, baron@clifton.hobby.nl 2000-02-06 This text gives some information about BogoMips, compiled from various sources such as news and e-mail.
The frequently asked questions about BogoMips 2.1 What are BogoMips 2.2 How to estimate what the proper BogoMips rating should be 2.3 How to determine what the current BogoMips rating is 2.4 Variations in BogoMips rating 2.5 BogoMips...
Many CPUs are prone to faulty setups of o memory cache setting (write-back is wrong for BogoMips, often reported lower than 5; write-through is ok) o turbo-buttons (should be ON) o BIOS-software emulated fake cache (change it for real cache) o similar cache and clock related things, sometimes also BIOS- software related 2.
web.mit.edu /linux/docs/mini-HOWTO/BogoMips   (2382 words)

  
 broadband help » Forums » Tech and Talk » Distributed Computing » [FP] LINUX Speed Check
BogoMips are being determined in /usr/src/linux/init/main.c (simple C algorithm, with a nice example of floating point arithmetic within the fully integer kernel), and the pertaining kernel variable loops_per_sec is used in several drivers for more serious purpose.
The actual delay function udelay() is in assembler, and therefore each port has its own definition in /include/asm/delay.h.
My AMD64 2800+ is getting 3563.52 bogomips now I have the clock right.
www.broadbandreports.com /forum/remark,13717492~mode=flat   (796 words)

  
 Linus Torvalds brings down the house with his own personal definition of Bogomips
Linus Torvalds really brought the house down when his team, The Nerds, got the question, "What are Bogomips?" This was one of two questions I had prepared that Linus was more likely to answer correctly than anyone else.
Linus himself defined the term Bogomips, so he gave the answer for his team.
The answer Linus gave as a contestant was technically correct; he said it was a meaningless benchmark measurement.
www.infoworld.com /articles/op/xml/01/02/12/010212oppetreley.html   (1145 words)

  
 Bogomips - standalone BogoMIPs benchmark program - benchmarks bogomips bogus
This is a standalone program to display the system performance in "BogoMIPs".
It is based on the code in the Linux kernel.
Main reason to upgrade to kernel 2.6 is improved...
www.icewalkers.com /LSM/fa0a95f9b49e6cf2686ef7a7598f642d.html   (66 words)

  
 [No title]
mail of 9 September 1993, explaining Bogomips: MIPS is short for Millions of Instructions Per Second.
>From Linus Torvalds, explaining about the variation one may see in the BogoMips rating, in c.o.l.development, at 28 April 1994 The BogoMips calculation loop is "quantizised", so you're most likely to get the exact same number all the time.
Let me add that there are only two reasons for paying attention to the BogoMips rating that is presented on booting Linux: 1.
www.ncf.carleton.ca /ip/sigs/computer/linux/info/howtos/mini/BogoMips   (742 words)

  
 BogoMips - OneLook Dictionary Search   (Site not responding. Last check: 2007-10-13)
We found 4 dictionaries with English definitions that include the word BogoMips:
Tip: Click on the first link on a line below to go directly to a page where "BogoMips" is defined.
BogoMips : Free On-line Dictionary of Computing [home, info]
www.onelook.com /cgi-bin/cgiwrap/bware/dofind.cgi?word=BogoMips   (77 words)

  
 Detailed information for Bogomips   (Site not responding. Last check: 2007-10-13)
Bogomips loop bogusly measures CPU speed while booting Linux.
Here is a version of the Unix program bogomips for HP calcs, and the expected results (0.321 bogomips, screen off, without interrupts) is really what we get.
You must be logged in to add your own comment.
www.hpcalc.org /details.php?id=5446   (56 words)

  
 Welcome to bogoMIPS!   (Site not responding. Last check: 2007-10-13)
bogoMIPS proudly offers computer consulting services in Sacramento, Vacaville, Fairfield and surrounding areas in California
bogoMIPS has the expertise to implement Open Source and commercial solutions that are customized to your needs resulting in a higher level of reliability and scalability at a low cost!
If you have suggestions for the website or need technical support please contact us: webmaster@bogomips.biz
www.bogomips.biz   (70 words)

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