Re: [vpp-dev] query on use_pthread in startup.conf

[bindiya Kurle]

Thanks Damjan . l was trying that because I want to move threads to other
partition.At the system start if main core is associated with some control
core group worker thread inherits this from parent thread and later set
affinity fails if you try to move worker thread to different partition.
Hence wanted to explore pthread with dpdk .is there any way where we can
specify worker thread group association ?

Regards,
Bindiya

On Wed, May 23, 2018 at 9:31 PM, Damjan Marion 
wrote:

> You cannot do that if you use DPDK. If you disable DPDK you will get all
> worker threads started as pthreads.
>
> And to be even more precise, DPDK threads are also pthreads, they just
> come with some extra stuff.
>
> What do you want to achieve?
>
> —
> Damjan
>
> On 17 May 2018, at 13:43, bindiya Kurle  wrote:
>
> Hi all,
> I am tried to use use_pthread in startup.conf.but still it takes
> Tried following option for creating multiple threads
>
> cpu {
> use-pthreads
>
>main-core 1
>corelist-workers 2,3
> }
>
> With this config , code always hit else part of below config  ,
> file : src/vlib/threads.c
>
>  if (tr->use_pthreads || tm->use_pthreads)
> {
>
>   for (j = 0; j < tr->count; j++)
> {
>   w = vlib_worker_threads + worker_thread_index++;
>   err = vlib_launch_thread_int (vlib_worker_thread_bootstrap_
> fn,
> w, 0);
>   if (err)
> clib_error_report (err);
> }
>
> }
>
>
>
>
>
>
>
>
>
>
> *else{  uword c;  /* *INDENT-OFF* */
> clib_bitmap_foreach (c, tr->coremask, ({w = vlib_worker_threads
> + worker_thread_index++;err = vlib_launch_thread_int
> (vlib_worker_thread_bootstrap_fn,
> w, c);if (err)  clib_error_report (err);
> }));*
>   /* *INDENT-ON* */
> }
>
> Can somebody help how can I create multiple thread using pthread instead
> dpdk_launch_thread?
>
>
> Regards,
> Bindiya
> 
>
>

Re: [vpp-dev] query on use_pthread in startup.conf

[Damjan Marion]

You cannot do that if you use DPDK. If you disable DPDK you will get all worker 
threads started as pthreads.

And to be even more precise, DPDK threads are also pthreads, they just come 
with some extra stuff.

What do you want to achieve?

— 
Damjan

> On 17 May 2018, at 13:43, bindiya Kurle  wrote:
> 
> Hi all,
> I am tried to use use_pthread in startup.conf.but still it takes
> Tried following option for creating multiple threads
> 
> cpu {
> use-pthreads
> 
>main-core 1
>corelist-workers 2,3
> }
> 
> With this config , code always hit else part of below config  ,
> file : src/vlib/threads.c
> 
>  if (tr->use_pthreads || tm->use_pthreads)
> {
> 
>   for (j = 0; j < tr->count; j++)
> {
>   w = vlib_worker_threads + worker_thread_index++;
>   err = vlib_launch_thread_int (vlib_worker_thread_bootstrap_fn,
> w, 0);
>   if (err)
> clib_error_report (err);
> }
>   
> }
>   else
> {
>   uword c;
>   /* *INDENT-OFF* */
>   clib_bitmap_foreach (c, tr->coremask, ({
> w = vlib_worker_threads + worker_thread_index++;
> err = vlib_launch_thread_int (vlib_worker_thread_bootstrap_fn,
>   w, c);
> if (err)
>   clib_error_report (err);
>   }));
>   /* *INDENT-ON* */
> }
> 
> Can somebody help how can I create multiple thread using pthread instead 
> dpdk_launch_thread?
> 
> 
> Regards,
> Bindiya
> 

[vpp-dev] query on use_pthread in startup.conf

[bindiya Kurle]

Hi all,
I am tried to use use_pthread in startup.conf.but still it takes
Tried following option for creating multiple threads

cpu {
use-pthreads

   main-core 1
   corelist-workers 2,3
}

With this config , code always hit else part of below config  ,
file : src/vlib/threads.c

 if (tr->use_pthreads || tm->use_pthreads)
{

  for (j = 0; j < tr->count; j++)
{
  w = vlib_worker_threads + worker_thread_index++;
  err = vlib_launch_thread_int (vlib_worker_thread_bootstrap_fn,
w, 0);
  if (err)
clib_error_report (err);
}

}










*else{  uword c;  /* *INDENT-OFF* */
clib_bitmap_foreach (c, tr->coremask, ({w = vlib_worker_threads
+ worker_thread_index++;err = vlib_launch_thread_int
(vlib_worker_thread_bootstrap_fn,
w, c);if (err)  clib_error_report (err);
}));*
  /* *INDENT-ON* */
}

Can somebody help how can I create multiple thread using pthread instead
dpdk_launch_thread?


Regards,
Bindiya