On Sat, May 24, 2008 at 7:52 AM, j.chitte <> wrote:
> --- In Jim Jackson <> wrote:
>>
>>
>>
>>
>> On Sat, 24 May 2008, j.chitte wrote:
>>
>> > Hi,
>> >
>> > I just loaded zImage-7250_2k-ts11 that I got from the ftp server
> a
>> > couple of weeks back onto a 7250 .
>> >
>> > $ uname -a
>> > Linux arm 2.4.26-ts11 #3 Tue Jun 6 14:13:14 MST 2006 armv4l
> unknown
>> >
>> > I just noticed this in dmesg:
>> >
>> > Console: colour dummy device 80x30
>> > Calibrating delay loop... 99.94 BogoMIPS
>> > Memory: 8MB 8MB 8MB 8MB 8MB 8MB 8MB 8MB = 64MB total
>> >
>> > Now I have seen posts that this is problem when building a 2.6
> kernel
>> > and required a patch. But what is this about on a TS kernel?
>> >
>> > Unless I'm misreading something this means that the std issue TS
>> > kernel is running the board at half speed.
>> >
>> > Am I mistaked?
>>
>> Probably. Are you thinking that bogomips == MHz ???
>>
>> 99Bogomips seems about right for an ep9302 clocked at 200MHz, under
> a
>> 2.4 kernel anyway.
>>
>
> probably a bad recollection of your post on the 2.6 patch issue.
> Thanks for putting me straight.
That BogoMIPS is the number of "nop" instructions (I mean an
instruction that does nothing) that's needed to get a 1s delay... so
the number depends on the architecture. If you have a look, in a
modern x86 (double pipeline) BogoMIPS~2*CPUClock. It looks that the
EP9302 has two-step execution, not pipelined.
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