[android-developers] Re: Difference between Android and Linux Kernel ?

[al]

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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[android-developers] Re: Difference between Android and Linux Kernel ?

[Anthony Prieur]

You might want to take a look at Linaro toolchain which speedup a lot 
Android: http://www.youtube.com/watch?v=mrQRYmYip6Q


Le vendredi 19 octobre 2012 08:13:53 UTC+2, chain_chelliah a écrit :
>
> 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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[android-developers] Re: Difference between Android and Linux Kernel ?

[chain_chelliah]

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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[android-developers] Re: Difference between Android and Linux Kernel ?

[chain_chelliah]

Thanks for  the reply,

  I'm using Beagle Bone device as developing kit. Is this OS 
support in ARM platform. If so, where i can download it.

 

On Friday, October 19, 2012 12:32:36 PM UTC+5:30, Anthony Prieur wrote:
>
> You might want to take a look at Linaro toolchain which speedup a lot 
> Android: http://www.youtube.com/watch?v=mrQRYmYip6Q
>
>
> Le vendredi 19 octobre 2012 08:13:53 UTC+2, chain_chelliah a écrit :
>>
>> 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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[android-developers] Re: Difference between Android and Linux Kernel ?

[chainz roid]

Hello Mr.Anthony Prieur 

  chain_chellaih using Beaglebone. but in the download 
link, which one yo give the target boards are  

   - Origen 
   - PandaBoard 
   - Snowball 
   - Versatile 
Express**

 Is the Jellybean image, which one is optimized, have the 
kernel with proper board config files for Beaglebone ?

On Friday, October 19, 2012 11:43:53 AM UTC+5:30, chain_chelliah wrote:
>
> 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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[android-developers] Re: Difference between Android and Linux Kernel ?

[Andrew Mackenzie]

I thought I recently saw some news (Linux Kernel release notes??) about the 
latest kernel release incorporating (some of? all of?) the modifications 
that Android had made, hence merging them back into the main trunk of 
development.

Whether Android then choses to actually that stock kernel over their 
branched one or not is a different question.

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[android-developers] Re: Difference between Android and Linux Kernel ?

[mrrocc]

What kind of test are you doing ?

Il giorno venerdì 19 ottobre 2012 08:13:53 UTC+2, chain_chelliah ha scritto:
>
> 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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[android-developers] Re: Difference between Android and Linux Kernel ?

[chain_chelliah]

Its a kind of bio-metric finger print template matching system, there using 
one algorithm for verify FP templates. 

On Friday, October 19, 2012 2:36:11 PM UTC+5:30, mrrocc wrote:
>
> What kind of test are you doing ?
>
> Il giorno venerdì 19 ottobre 2012 08:13:53 UTC+2, chain_chelliah ha 
> scritto:
>>
>> 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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[android-developers] Re: Difference between Android and Linux Kernel ?

[Ian Ni-Lewis]

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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[android-developers] Re: Difference between Android and Linux Kernel ?

[chain_chelliah]

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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Re: [android-developers] Re: Difference between Android and Linux Kernel ?

[Anthony Prieur]

Try first JellyBean image, reading comments seems JB already added a
portion of Linaro optimization.

Linaro: http://www.linaro.org/downloads/


On Fri, Oct 19, 2012 at 9:17 AM, chain_chelliah
 wrote:
> Thanks for  the reply,
>
>   I'm using Beagle Bone device as developing kit. Is this OS support
> in ARM platform. If so, where i can download it.
>
>
>
> On Friday, October 19, 2012 12:32:36 PM UTC+5:30, Anthony Prieur wrote:
>>
>> You might want to take a look at Linaro toolchain which speedup a lot
>> Android: http://www.youtube.com/watch?v=mrQRYmYip6Q
>>
>>
>> Le vendredi 19 octobre 2012 08:13:53 UTC+2, chain_chelliah a écrit :
>>>
>>> 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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Re: [android-developers] Re: Difference between Android and Linux Kernel ?

[Anthony Prieur]

Asks directly to Linaro team, would be better infos there.

On Fri, Oct 19, 2012 at 9:54 AM, chainz roid
 wrote:
> Hello Mr.Anthony Prieur
>
>   chain_chellaih using Beaglebone. but in the download
> link, which one yo give the target boards are
>
> Origen
> PandaBoard
> Snowball
> Versatile Express**
>
>  Is the Jellybean image, which one is optimized, have the kernel
> with proper board config files for Beaglebone ?
>
> On Friday, October 19, 2012 11:43:53 AM UTC+5:30, chain_chelliah wrote:
>>
>> 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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Re: [android-developers] Re: Difference between Android and Linux Kernel ?

[chain_chelliah]

Oh !!! Thanks Anthony !!!

   Please let me know when you have gathered  knowledge of beagle bone 
board.


Thanks and Regards,

Sangili Pandian C.

On Friday, October 19, 2012 1:31:32 PM UTC+5:30, Anthony Prieur wrote:
>
> Asks directly to Linaro team, would be better infos there. 
>
> On Fri, Oct 19, 2012 at 9:54 AM, chainz roid 
> > wrote: 
> > Hello Mr.Anthony Prieur 
> > 
> >   chain_chellaih using Beaglebone. but in the 
> download 
> > link, which one yo give the target boards are 
> > 
> > Origen 
> > PandaBoard 
> > Snowball 
> > Versatile Express** 
> > 
> >  Is the Jellybean image, which one is optimized, have the 
> kernel 
> > with proper board config files for Beaglebone ? 
> > 
> > On Friday, October 19, 2012 11:43:53 AM UTC+5:30, chain_chelliah wrote: 
> >> 
> >> 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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