lkml.org 
[lkml]   [2008]   [Sep]   [18]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectQuery: is there an official location for jiffies per second value?
Date
Hi there,

I found I can get jiffies per second with this on one box:

grant@deltree:~$ uname -r
2.6.26.5a

grant@deltree:~$ awk 'FNR==NR{up=$1};/^jiffies:/{print up, $2, $2/up}' \
/proc/uptime /proc/timer_list
420389.04 126026727 299.786


But this value is very different on another box:

grant@pooh64:~$ uname -r
2.6.26.5a

grant@pooh64:~$ awk 'FNR==NR{up=$1}/^jiffies:/{print up, $2, $2/up}' \
/proc/uptime /proc/timer_list
73830.36 4317026409 58472.2
73830.36 4317026409 58472.2

Is there a reliable way to determine this jiffies value across different
x86 boxes?

The 'sysconf(_SC_CLK_TCK)' doesn't return the right answer either. It
says 100Hz when it is 300Hz.

Thanks,
Grant.


\
 
 \ /
  Last update: 2008-09-18 09:27    [W:0.140 / U:0.016 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site