Re: [algogeeks] threading

2011-05-26 Thread LALIT SHARMA
Pthread is a User level thread ,

Java threading cant be distinguished as user level or kernel level ,
the java threads are contained in JVM and mapping is used by OS to map
JVM to kernel threads.

On Thu, May 26, 2011 at 4:55 PM, anshu mishra  wrote:
> it is os responsibility to map user level thread to kernel level thread.
> Usually os implements many to many mapping.
> In pthread we can bind a particular thread to particular processor or set of
> processor.
>
> --
> You received this message because you are subscribed to the Google Groups
> "Algorithm Geeks" group.
> To post to this group, send email to algogeeks@googlegroups.com.
> To unsubscribe from this group, send email to
> algogeeks+unsubscr...@googlegroups.com.
> For more options, visit this group at
> http://groups.google.com/group/algogeeks?hl=en.
>



-- 
Lalit Kishore Sharma,
IIIT Allahabad (Amethi Capmus),
6th Sem.

-- 
You received this message because you are subscribed to the Google Groups 
"Algorithm Geeks" group.
To post to this group, send email to algogeeks@googlegroups.com.
To unsubscribe from this group, send email to 
algogeeks+unsubscr...@googlegroups.com.
For more options, visit this group at 
http://groups.google.com/group/algogeeks?hl=en.



Re: [algogeeks] threading

2011-05-26 Thread anshu mishra
it is os responsibility to map user level thread to kernel level thread.
Usually os implements many to many mapping.
In pthread we can bind a particular thread to particular processor or set of
processor.

-- 
You received this message because you are subscribed to the Google Groups 
"Algorithm Geeks" group.
To post to this group, send email to algogeeks@googlegroups.com.
To unsubscribe from this group, send email to 
algogeeks+unsubscr...@googlegroups.com.
For more options, visit this group at 
http://groups.google.com/group/algogeeks?hl=en.



[algogeeks] threading

2011-05-26 Thread jagannath
Pthread is a user-level thread or kernel-level?.Java
supports user-level threading i know ,but while doing a project on
web-
crawling i marked the cpu-utilization in conky(ubuntu) ,both the
cores' utilization increased drastically as program ran.I know that in
user-level threading kernel is not aware whether a process is
multithreaded or not,rather it sees the entire process as a single
entity .But in my project i think the dual cores utilization increased
because of the threads being scheduled on both the cores.I dont
understand how is it possible as the kernel isn't aware of the process
thread since it is user-level(java thread).Is it because of jvm
implicit feature or java threads are hybrid kind in nature.

-- 
You received this message because you are subscribed to the Google Groups 
"Algorithm Geeks" group.
To post to this group, send email to algogeeks@googlegroups.com.
To unsubscribe from this group, send email to 
algogeeks+unsubscr...@googlegroups.com.
For more options, visit this group at 
http://groups.google.com/group/algogeeks?hl=en.