Fwd: RTEMS pthreads performance (was RTEMS vs other real timeOperating Systems ..)

[Till Straumann]

Joel Sherrill wrote:

>Till Straumann wrote:
>  
>
>>Kamen Penev wrote:
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>>
>>>Hi!
>>>
>>>Looking at your work comparing RTEMS, RTLinux and vxWorks, I am wondering
>>>about the unusually poor RTEMS+pthreads result for context switching on a
>>>loaded system. Has this been explained (better yet fixed)by the RTEMS
>>>development team?
>>>      
>>>
>
>Which RTEMS version/target CPU/configuration?
>

I believe it was ss-20011025 (I can re-run the test later today on a 
later version).

The target was a 604 series PowerPC on a Motorola MVME23xx board.

-- Till

>
>  
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>>>Thanks.
>>>
>>>Kamen Penev
>>>Adept Technology
>>>
>>>
>>>
>>>      
>>>
>>Good question. I am not using pthreads and the honest answer is "I dont
>>know".
>>I remember, however having brought this to Joel Sherrill's attention
>>(back in 2001
>>when I did the tests) and I believe he had some ideas about the cause...
>>
>>-- Till
>>    
>>
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