RE: /proc on 2.4.21 & 2.6 kernels....

["Amanulla G" <amanulla@india.hp.com>]

 Hi, 
Thanks for the mail.
May be I didn't put my question correctly.
On 2.4.21 based kernels /proc has got hidden directories which has got the
thread related statistics.
1) /proc/pid reflects resource usage of the process
2) /proc/.pid  (I Was referring to this as a thread ID). Kernel stores
thread resource utilization under this directory.

My question was resource utilization (say cpu utilization) statistics under
/proc/pid doesn't include resource utilization of threads which that process
has created.

May be this is specific to Red Hat AS 3.0 only. I will check it.

My second part of question was:
On 2.6 kernels, we have  /proc/<tgid>/task/xxx 
My question is /proc/<tgid> stats reflect resource utilization of the
threads it has created? 
Or do they only report resource utilization of a process with <tgid> as the
pid? 

Once again thanks for your reply and time.

Thanks & Best Regards,
Amanulla




-----Original Message-----
From: Arjan van de Ven [mailto:arjan@infradead.org] 
Sent: Tuesday, April 05, 2005 8:48 PM
To: Amanulla G
Cc: linux-kernel@vger.kernel.org; jdp@india.hp.com
Subject: Re: /proc on 2.4.21 & 2.6 kernels....

On Tue, 2005-04-05 at 20:41 +0530, Amanulla G wrote:
>  Hi, 
> I would like to know the information on /proc under 2.4.21 based kernels.
>  
> On 2.4.21 based kernels, /proc has got two types of entries.
> /proc/pid & /proc/.tid

2.4 kernels do not have /proc/.tid.

Some vendor kernels might, if you ahve problems with such kernels you
are much better of contacting the vendor of such a kernel instead.