From mboxrd@z Thu Jan  1 00:00:00 1970
From: riel@surriel.com (Rik van Riel)
Date: Fri, 16 Aug 2013 12:57:23 -0400
Subject: How is run queue length computed in linux proc filesystem
In-Reply-To: <CAEfTDT7=6zkECcxe1_+bzoFHgagsBix_d-zYMTPkVEMi2rOnTg@mail.gmail.com>
References: <CAEfTDT7=6zkECcxe1_+bzoFHgagsBix_d-zYMTPkVEMi2rOnTg@mail.gmail.com>
Message-ID: <520E59F3.9070206@surriel.com>
To: kernelnewbies@lists.kernelnewbies.org
List-Id: kernelnewbies.lists.kernelnewbies.org

On 08/16/2013 09:20 AM, emani murali wrote:
> Hi,
>
> I'm trying to obtain number of runnable processes from linux kernel. sar
> -q gives this information readily. However I'm trying to get this value
> from /proc filesystem. There is no file in /proc that gives this value
> directly, then how is runq-sz computed.

Tools like top, vmstat, and sar, simply look at all the processes
in /proc, and count the number that are in runnable (R) state.

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