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Date: Thu, 25 Oct 2012 00:24:35 -0700 (PDT)
From: chain_chelliah <sangilipandian.chell...@marudham.co.in>
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Subject: Re: Difference between Android and Linux Kernel ?
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Thanks Ian ,

            I've learned some useful info. Thanks again.

On Tuesday, October 23, 2012 4:43:57 AM UTC+5:30, Ian Ni-Lewis wrote:
>
> MIPS rate isn't a particularly helpful measurement, especially if you're 
> just looking at peak MIPS. This is particularly important when comparing 
> two completely different instruction sets, but even on identical 
> instruction sets this is a misleading measurement. The core architecture, 
> cache sizes, and memory bus will have as much or more impact on real-world 
> performance.
> Ian
>
> On Friday, October 19, 2012 12:05:27 AM UTC-7, chain_chelliah wrote:
>>
>> Thanks for quick reply,
>>
>>           I'm not using same hardware platform for all. Android alone 
>> running ARM core with 750 MHz , others are Intel core with 2 GHz. Compare 
>> with MIPS rate both core equally same. 
>>
>>           Kindly tell me, If my platforms may differ which Android OS 
>> suitable for further development. 
>>
>> On Friday, October 19, 2012 12:11:16 PM UTC+5:30, al wrote:
>>>
>>> Yes, the Android linux kernel has been modified.
>>>
>>> Android uses the "bionic" c lib.
>>>
>>> Your test results look like you are comparing apples and oranges. E.g. 
>>> do you use the same hardware for the test? If so, you need to use 
>>> Android-x86 or something similar which may not be optimized (drivers etc.) 
>>> for your platform...
>>>
>>> Am Freitag, 19. Oktober 2012 08:13:53 UTC+2 schrieb chain_chelliah:
>>>>
>>>> I know Android uses the Linux kernel. I hope the Android developers did 
>>>> some modification with original Linux Kernel, especially in standard C 
>>>> libraries. My question is whether the processing speed of Linux and Android 
>>>> kernel are the same or different. I did some tests in different OS like 
>>>> windows and Redhat Linux and unbuntu and android. By the results Android is 
>>>> very slow. Android uses same Linux kernel... why this process variations 
>>>> but i know we cant expect same speed as in Linux, but I had huge 
>>>> differences (for example: Windows take 11 sec, Linux takes 4 sec, but 
>>>> Android takes 55 sec to complete my test) So What is the reason for this 
>>>> speed variation between these two linux kernels (Android and redhat both 
>>>> are 2.6)?
>>>>
>>>> I'm using Android Kernel version  3.2.0.
>>>>
>>>> Thanks and Regards,
>>>>
>>>> Sangili Pandian C
>>>>
>>>
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Thanks Ian ,<div><br></div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; I=
've learned some useful info. Thanks again.<br><br>On Tuesday, October 23, =
2012 4:43:57 AM UTC+5:30, Ian Ni-Lewis wrote:<blockquote class=3D"gmail_quo=
te" style=3D"margin: 0;margin-left: 0.8ex;border-left: 1px #ccc solid;paddi=
ng-left: 1ex;">MIPS rate isn't a particularly helpful measurement, especial=
ly if you're just looking at peak MIPS. This is particularly important when=
 comparing two completely different instruction sets, but even on identical=
 instruction sets this is a misleading measurement. The core architecture, =
cache sizes, and memory bus will have as much or more impact on real-world =
performance.<div>Ian<br><br>On Friday, October 19, 2012 12:05:27 AM UTC-7, =
chain_chelliah wrote:<blockquote class=3D"gmail_quote" style=3D"margin:0;ma=
rgin-left:0.8ex;border-left:1px #ccc solid;padding-left:1ex">Thanks for qui=
ck reply,<div><br></div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; I'm not usi=
ng same hardware platform for all. Android alone running ARM core with 750 =
MHz , others are Intel core with 2 GHz. Compare with MIPS rate both core eq=
ually same.&nbsp;</div><div><br></div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbs=
p; Kindly tell me, If my platforms may differ which Android OS suitable for=
 further development.&nbsp;<br><br>On Friday, October 19, 2012 12:11:16 PM =
UTC+5:30, al wrote:<blockquote class=3D"gmail_quote" style=3D"margin:0;marg=
in-left:0.8ex;border-left:1px #ccc solid;padding-left:1ex">Yes, the Android=
 linux kernel has been modified.<br><br>Android uses the "bionic" c lib.<br=
><br>Your test results look like you are comparing apples and oranges. E.g.=
 do you use the same hardware for the test? If so, you need to use Android-=
x86 or something similar which may not be optimized (drivers etc.) for your=
 platform...<br><br>Am Freitag, 19. Oktober 2012 08:13:53 UTC+2 schrieb cha=
in_chelliah:<blockquote class=3D"gmail_quote" style=3D"margin:0;margin-left=
:0.8ex;border-left:1px #ccc solid;padding-left:1ex"><div style=3D"overflow:=
hidden;max-width:100%;word-wrap:break-word;width:auto;padding:20px;color:rg=
b(51,51,51);font-family:Verdana;font-size:11px"><p>I know Android uses the =
Linux kernel. I hope the Android developers did some modification with orig=
inal Linux Kernel, especially in standard C libraries. My question is wheth=
er the processing speed of Linux and Android kernel are the same or differe=
nt. I did some tests in different OS like windows and Redhat Linux and unbu=
ntu and android. By the results Android is very slow. Android uses same Lin=
ux kernel... why this process variations but i know we cant expect same spe=
ed as in Linux, but I had huge differences (for example: Windows take 11 se=
c, Linux takes 4 sec, but Android takes 55 sec to complete my test) So What=
 is the reason for this speed variation between these two linux kernels (An=
droid and redhat both are 2.6)?</p><p>I'm using Android Kernel version &nbs=
p;3.2.0.</p><div style=3D"clear:both"></div></div><div style=3D"overflow:hi=
dden;max-width:100%;word-wrap:break-word;padding-right:20px;padding-bottom:=
8px;padding-left:20px;width:auto;color:rgb(51,51,51);font-family:Verdana;fo=
nt-size:11px"><p></p><p>Thanks and Regards,</p><p>Sangili Pandian C</p></di=
v></blockquote></blockquote></div></blockquote></div></blockquote></div>
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