[Dev] [SDK/Emulator] Emulator kernel upgrade is postponed and other issues...

Stanislav Vorobiov s.vorobiov at samsung.com
Fri Apr 18 07:06:46 GMT 2014


Hi,

> How long kernel load time (after kernel loading -> before "init" starts) at
> your Windows PC with HAX enabled and HAX disabled ??
How do you measure the time between kernel loading and init start ? Do you modify guest
filesystem somehow ?

I've measured time from emulator startup to UI, it's 20-22secs with HAX and about 2m 20secs without HAX

On 04/18/2014 10:41 AM, SeokYeon Hwang wrote:
> Yes, It can reproduce even with g_poll patch.
> We can reproduce it on most of Windows PCs. It may be timing issues depend
> on PC's performance, ...
> 
> How long kernel load time (after kernel loading -> before "init" starts) at
> your Windows PC with HAX enabled and HAX disabled ??
> 
> -----Original Message-----
> From: Stanislav Vorobiov [mailto:s.vorobiov at samsung.com] 
> Sent: Friday, April 18, 2014 2:59 PM
> To: SeokYeon Hwang; dev at lists.tizen.org; 'Ji, John'; ritu.sood at intel.com
> Subject: Re: [Dev] [SDK/Emulator] Emulator kernel upgrade is postponed and
> other issues...
> 
> Hi, SeokYeon
> 
> This happens even with https://review.tizen.org/gerrit/#/c/19414/ right ?
> 
> Before that patch kernel 3.12 didn't boot at all, but now it boots every
> time (fast) and I can't reproduce this hang...
> 
> Also, regarding boot delays with HAX, I do experience them on mac os x, I'm
> not sure if it's related though...
> 
> On 04/18/2014 08:11 AM, SeokYeon Hwang wrote:
>> I'll postpone to apply 3.12 linux kernel to tizen because of a big
> problem.
>>
>> The problem is that the hang happens for a certain period of time (several
> minutes) when booting in many Windows PC.
>>
>> Until resolving the problem, I'll postpone it.
>>
>>  
>>
>> We need a help to resolve it, especially from HAX developers. 
>>
>> Because it happens when running with turned on VT acceleration with HAX.
>>
>> The other fact is that guest kernel time is stopped.
>>
>> Please treat this with a higher priority.
>>
>> The HAX may not be the cause of the problem. However, it will be very
> helpful if HAX developers help me.
>>
>>  
>>
>> Also, I have a question about HAX.
>>
>> Why does the running with disabled HAX be the faster than the running with
> enabled HAX for the time (loading kernel -> starting init) in Windows?
>>
>> It can affect the overall performance in Windows, so please check this
> performance issue.
>>
>>  
>>
>> Thanks.
>>
>>
>>
>> _______________________________________________
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>>
> 
> 



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