* [parisc-linux] bogomips?
@ 2002-01-12 11:10 Peter Lavender
2002-01-12 11:35 ` kenneth westelinck
` (2 more replies)
0 siblings, 3 replies; 13+ messages in thread
From: Peter Lavender @ 2002-01-12 11:10 UTC (permalink / raw)
To: parisc
Hi everyone,
What's a 715/64 equate to in terms of intel arches?
Here's my p90 with 48meg of ram:
Calibrating delay loop... 35.84 BogoMIPS
and my 715/64 with 128 meg of ram:
Calibrating delay loop... 63.69 BogoMIPS
Thanks,
Pete
^ permalink raw reply [flat|nested] 13+ messages in thread* Re: [parisc-linux] bogomips? 2002-01-12 11:10 [parisc-linux] bogomips? Peter Lavender @ 2002-01-12 11:35 ` kenneth westelinck 2002-01-12 15:16 ` Michael S.Zick 2002-01-12 16:36 ` Randolph Chung 2002-01-12 17:00 ` Tom 2 siblings, 1 reply; 13+ messages in thread From: kenneth westelinck @ 2002-01-12 11:35 UTC (permalink / raw) To: Peter Lavender, parisc Hmm, don't know. My little 486DX4 100MHz, 12MB RAM: /proc# cat ./cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 4 model : 8 model name : 486 DX/4 stepping : 0 fdiv_bug : no hlt_bug : no sep_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 1 wp : yes flags : fpu vme bogomips : 49.66 /proc# regards, Kenneth ----- Original Message ----- From: "Peter Lavender" <plaven@bigpond.net.au> To: "parisc" <parisc-linux@parisc-linux.org> Sent: Saturday, January 12, 2002 12:10 PM Subject: [parisc-linux] bogomips? > Hi everyone, > > What's a 715/64 equate to in terms of intel arches? > > Here's my p90 with 48meg of ram: > Calibrating delay loop... 35.84 BogoMIPS > > and my 715/64 with 128 meg of ram: > Calibrating delay loop... 63.69 BogoMIPS > > Thanks, > > Pete > > > _______________________________________________ > parisc-linux mailing list > parisc-linux@lists.parisc-linux.org > http://lists.parisc-linux.org/mailman/listinfo/parisc-linux > ^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: [parisc-linux] bogomips? 2002-01-12 11:35 ` kenneth westelinck @ 2002-01-12 15:16 ` Michael S.Zick 0 siblings, 0 replies; 13+ messages in thread From: Michael S.Zick @ 2002-01-12 15:16 UTC (permalink / raw) To: Peter Lavender; +Cc: parisc Hmmm.... I don't know if this is the intended operation or not (probably a question for the Linux tree dudes), but... Kenneth's 486 reports at about 1/2 the clock speed (also notice the lack of a cpu MHz line in the report). This Celeron reports at about 2* the clock speed. (Kernel 2.4.17) If memory (mine) serves, my P-II system reported at appox. bogomips == cpu clock. I don't recall what my Pentium or 386 system reported and have never had a 486. I think I noticed the change in the relationship between bogomips and cpu clock early in kernel 2.2.x (while I was running the P-II system) - perhaps something has crept in from the Linux tree that is having this effect. Mike [mszick@localhost /proc]$ cat ./cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 6 model name : Celeron (Mendocino) stepping : 5 cpu MHz : 467.737 cache size : 128 KB fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 2 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr bogomips : 930.61 [mszick@localhost /proc]$ On Saturday 12 January 2002 05:35 am, you wrote: > Hmm, don't know. > > My little 486DX4 100MHz, 12MB RAM: > /proc# cat ./cpuinfo > processor : 0 > vendor_id : GenuineIntel > cpu family : 4 > model : 8 > model name : 486 DX/4 > stepping : 0 > fdiv_bug : no > hlt_bug : no > sep_bug : no > f00f_bug : no > coma_bug : no > fpu : yes > fpu_exception : yes > cpuid level : 1 > wp : yes > flags : fpu vme > bogomips : 49.66 > > /proc# > > > regards, > > Kenneth > > ----- Original Message ----- > From: "Peter Lavender" <plaven@bigpond.net.au> > To: "parisc" <parisc-linux@parisc-linux.org> > Sent: Saturday, January 12, 2002 12:10 PM > Subject: [parisc-linux] bogomips? > > > Hi everyone, > > > > What's a 715/64 equate to in terms of intel arches? > > > > Here's my p90 with 48meg of ram: > > Calibrating delay loop... 35.84 BogoMIPS > > > > and my 715/64 with 128 meg of ram: > > Calibrating delay loop... 63.69 BogoMIPS > > > > Thanks, > > > > Pete > > > > > > _______________________________________________ > > parisc-linux mailing list > > parisc-linux@lists.parisc-linux.org > > http://lists.parisc-linux.org/mailman/listinfo/parisc-linux > > _______________________________________________ > parisc-linux mailing list > parisc-linux@lists.parisc-linux.org > http://lists.parisc-linux.org/mailman/listinfo/parisc-linux ^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: [parisc-linux] bogomips? 2002-01-12 11:10 [parisc-linux] bogomips? Peter Lavender 2002-01-12 11:35 ` kenneth westelinck @ 2002-01-12 16:36 ` Randolph Chung 2002-01-12 17:00 ` Tom 2 siblings, 0 replies; 13+ messages in thread From: Randolph Chung @ 2002-01-12 16:36 UTC (permalink / raw) To: Peter Lavender; +Cc: parisc > What's a 715/64 equate to in terms of intel arches? > > Here's my p90 with 48meg of ram: > Calibrating delay loop... 35.84 BogoMIPS > > and my 715/64 with 128 meg of ram: > Calibrating delay loop... 63.69 BogoMIPS bogomips is not a good measure of this..... try looking at the SPEC website (www.spec.org) for the CPU95/SPECint95/SPECfp95 results. randolph -- @..@ http://www.TauSq.org/ (----) ( >__< ) ^^ ~~ ^^ ^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: [parisc-linux] bogomips? 2002-01-12 11:10 [parisc-linux] bogomips? Peter Lavender 2002-01-12 11:35 ` kenneth westelinck 2002-01-12 16:36 ` Randolph Chung @ 2002-01-12 17:00 ` Tom 2002-01-12 22:43 ` Grant Grundler 2 siblings, 1 reply; 13+ messages in thread From: Tom @ 2002-01-12 17:00 UTC (permalink / raw) To: Peter Lavender; +Cc: parisc On Sat, 12 Jan 2002, Peter Lavender wrote: > Hi everyone, > > What's a 715/64 equate to in terms of intel arches? > > Here's my p90 with 48meg of ram: > Calibrating delay loop... 35.84 BogoMIPS > > and my 715/64 with 128 meg of ram: > Calibrating delay loop... 63.69 BogoMIPS As a rough guess, my 715/100 feels like a Pentium chip of roughly twice the speed, while my C180 feels like a P2 of roughly twice the speed. Don't know if the bogomips back that up, but that's the way they feel. ^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: [parisc-linux] bogomips? 2002-01-12 17:00 ` Tom @ 2002-01-12 22:43 ` Grant Grundler 2002-01-13 8:53 ` kenneth westelinck 2002-01-13 10:12 ` Christian Suder 0 siblings, 2 replies; 13+ messages in thread From: Grant Grundler @ 2002-01-12 22:43 UTC (permalink / raw) To: Tom; +Cc: Peter Lavender, parisc Tom wrote: > As a rough guess, my 715/100 feels like a Pentium chip of roughly twice > the speed, while my C180 feels like a P2 of roughly twice the speed. Don't > know if the bogomips back that up, but that's the way they feel. I've heard that from a bunch of people and seems like a good rule of thumb. Someone once told me: "bogomips is just a dick waving contest". (apologies to any female readers who are offended). But that statement accurately sums up how useful bogomips is for comparing perf. grant ^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: [parisc-linux] bogomips? 2002-01-12 22:43 ` Grant Grundler @ 2002-01-13 8:53 ` kenneth westelinck 2002-01-13 10:12 ` Christian Suder 1 sibling, 0 replies; 13+ messages in thread From: kenneth westelinck @ 2002-01-13 8:53 UTC (permalink / raw) To: Tom, Grant Grundler; +Cc: Peter Lavender, parisc Than my server has a rather small dick. But they always claim, size doesn't count ;) ----- Original Message ----- From: "Grant Grundler" <grundler@dsl2.external.hp.com> To: "Tom" <palinux@alaskatech.org> Cc: "Peter Lavender" <plaven@bigpond.net.au>; "parisc" <parisc-linux@parisc-linux.org> Sent: Saturday, January 12, 2002 11:43 PM Subject: Re: [parisc-linux] bogomips? > Tom wrote: > > As a rough guess, my 715/100 feels like a Pentium chip of roughly twice > > the speed, while my C180 feels like a P2 of roughly twice the speed. Don't > > know if the bogomips back that up, but that's the way they feel. > > I've heard that from a bunch of people and seems like a good rule of thumb. > > Someone once told me: "bogomips is just a dick waving contest". > (apologies to any female readers who are offended). > But that statement accurately sums up how useful bogomips > is for comparing perf. > > grant > > _______________________________________________ > parisc-linux mailing list > parisc-linux@lists.parisc-linux.org > http://lists.parisc-linux.org/mailman/listinfo/parisc-linux > ^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: [parisc-linux] bogomips? 2002-01-12 22:43 ` Grant Grundler 2002-01-13 8:53 ` kenneth westelinck @ 2002-01-13 10:12 ` Christian Suder 2002-01-13 11:25 ` Jochen Friedrich ` (2 more replies) 1 sibling, 3 replies; 13+ messages in thread From: Christian Suder @ 2002-01-13 10:12 UTC (permalink / raw) To: Grant Grundler; +Cc: palinux, plaven, parisc-linux http://www.linuxdoc.org/HOWTO/mini/BogoMips.html For those who believe BogoMips matter..... ;-) Christian On Sat, 12 Jan 2002 15:43:06 -0700 "Grant Grundler" <grundler@dsl2.external.hp.com> wrote: > Tom wrote: > > As a rough guess, my 715/100 feels like a Pentium chip of roughly twice> > the speed, while my C180 feels like a P2 of roughly twice the speed. Don't> > know if the bogomips back that up, but that's the way they feel.> > I've heard that from a bunch of people and seems like a good rule of thumb.> > Someone once told me: "bogomips is just a dick waving contest". > (apologies to any female readers who are offended). > But that statement accurately sums up how useful bogomips > is for comparing perf. > > grant > > _______________________________________________ > parisc-linux mailing list > parisc-linux@lists.parisc-linux.org > http://lists.parisc-linux.org/mailman/listinfo/parisc-linux ^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: [parisc-linux] bogomips? 2002-01-13 10:12 ` Christian Suder @ 2002-01-13 11:25 ` Jochen Friedrich 2002-01-13 15:48 ` Michael S.Zick 2002-01-13 15:53 ` Michael S.Zick 2 siblings, 0 replies; 13+ messages in thread From: Jochen Friedrich @ 2002-01-13 11:25 UTC (permalink / raw) To: Christian Suder; +Cc: Grant Grundler, palinux, plaven, parisc-linux On Sun, 13 Jan 2002, Christian Suder wrote: > For those who believe BogoMips matter..... ;-) The document lists a HP9000/720 running HP/UX with 48 BogoMIPS. This seems to match Linux (Linux is even a bit faster :-) ): # cat /proc/cpuinfo processor : 0 cpu family : PA-RISC 1.1a cpu : PA7000 (PCX-S) cpu MHz : 50.000000 model : 9000/720 model name : Cobra (720) hversion : 0x00002000 sversion : 0x00000481 I-cache : 128 KB D-cache : 256 KB (WB) ITLB entries : 96 DTLB entries : 96 BTLB fixed : max. 4096 pages, pagesize=4096 (16MB) BTLB fix-entr. : 4 instruction, 4 data (0 combined) BTLB var-entr. : 0 instruction, 0 data (0 combined) bogomips : 49.86 software id : 86914152 Cheers, Jochen ^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: [parisc-linux] bogomips? 2002-01-13 10:12 ` Christian Suder 2002-01-13 11:25 ` Jochen Friedrich @ 2002-01-13 15:48 ` Michael S.Zick 2002-01-13 15:52 ` Matthew Wilcox 2002-01-13 15:53 ` Michael S.Zick 2 siblings, 1 reply; 13+ messages in thread From: Michael S.Zick @ 2002-01-13 15:48 UTC (permalink / raw) To: parisc-linux On Sunday 13 January 2002 04:12 am, Christian Suder wrote: > http://www.linuxdoc.org/HOWTO/mini/BogoMips.html > > For those who believe BogoMips matter..... ;-) > > Christian > Well, I would never claim that BogoMips is, in its self, useful for anything. But since its code is closely related to the udelay code, which affects scheduling and many drivers... Once upon a time, both my Celeron and my P-II reported approximately 1.00 * clock (same as above reference), then with some change of kernel version, jumped to 2.00 * clock. BUT, that might have been an intentional change in the routine, or... No promises on this one: I sometimes keep old kernels, perhaps I can find the "before and after" kernels where I noticed the change. Mike ^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: [parisc-linux] bogomips? 2002-01-13 15:48 ` Michael S.Zick @ 2002-01-13 15:52 ` Matthew Wilcox 2002-01-13 16:08 ` Alan Cox 0 siblings, 1 reply; 13+ messages in thread From: Matthew Wilcox @ 2002-01-13 15:52 UTC (permalink / raw) To: Michael S. Zick; +Cc: parisc-linux On Sun, Jan 13, 2002 at 09:48:20AM -0600, Michael S. Zick wrote: > Once upon a time, both my Celeron and my P-II reported approximately 1.00 * > clock (same as above reference), then with some change of kernel version, > jumped to 2.00 * clock. yeah, that was a change prumpf made. i forget why, but there was an important reason. -- Revolutions do not require corporate support. ^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: [parisc-linux] bogomips? 2002-01-13 15:52 ` Matthew Wilcox @ 2002-01-13 16:08 ` Alan Cox 0 siblings, 0 replies; 13+ messages in thread From: Alan Cox @ 2002-01-13 16:08 UTC (permalink / raw) To: Matthew Wilcox; +Cc: Michael S. Zick, parisc-linux > On Sun, Jan 13, 2002 at 09:48:20AM -0600, Michael S. Zick wrote: > > Once upon a time, both my Celeron and my P-II reported approximately 1.00 * > > clock (same as above reference), then with some change of kernel version, > > jumped to 2.00 * clock. > > yeah, that was a change prumpf made. i forget why, but there was an > important reason. We changed the x86 bogomip computation because it overflowed on a 2GHz processor. (Yes Linux 2.0 does not work on 2GHz preventium IV 8)) In all cases bogomips serves only two other serious purposes. Comparison of identical processors, and checking nobody sold you the wrong processor. Even in the x86 world this is quite obvious, with a 1.5GHz AMD flattening a 2GHz Intel on actual throughput. Alan ^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: [parisc-linux] bogomips? 2002-01-13 10:12 ` Christian Suder 2002-01-13 11:25 ` Jochen Friedrich 2002-01-13 15:48 ` Michael S.Zick @ 2002-01-13 15:53 ` Michael S.Zick 2 siblings, 0 replies; 13+ messages in thread From: Michael S.Zick @ 2002-01-13 15:53 UTC (permalink / raw) To: parisc-linux Oops, I am once again exposed as a fool. Please ignore my earlier copy of this message - I didn't read the full reference. The change from 1.0 * clock to 2.0 * clock is described in the reference. Sorry folks, Mike On Sunday 13 January 2002 04:12 am, Christian Suder wrote: > http://www.linuxdoc.org/HOWTO/mini/BogoMips.html > > For those who believe BogoMips matter..... ;-) > > Christian > Well, I would never claim that BogoMips is, in its self, useful for anything. But since its code is closely related to the udelay code, which affects scheduling and many drivers... Once upon a time, both my Celeron and my P-II reported approximately 1.00 * clock (same as above reference), then with some change of kernel version, jumped to 2.00 * clock. BUT, that might have been an intentional change in the routine, or... No promises on this one: I sometimes keep old kernels, perhaps I can find the "before and after" kernels where I noticed the change. Mike ^ permalink raw reply [flat|nested] 13+ messages in thread
end of thread, other threads:[~2002-01-13 15:56 UTC | newest] Thread overview: 13+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2002-01-12 11:10 [parisc-linux] bogomips? Peter Lavender 2002-01-12 11:35 ` kenneth westelinck 2002-01-12 15:16 ` Michael S.Zick 2002-01-12 16:36 ` Randolph Chung 2002-01-12 17:00 ` Tom 2002-01-12 22:43 ` Grant Grundler 2002-01-13 8:53 ` kenneth westelinck 2002-01-13 10:12 ` Christian Suder 2002-01-13 11:25 ` Jochen Friedrich 2002-01-13 15:48 ` Michael S.Zick 2002-01-13 15:52 ` Matthew Wilcox 2002-01-13 16:08 ` Alan Cox 2002-01-13 15:53 ` Michael S.Zick
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