From mboxrd@z Thu Jan  1 00:00:00 1970
From: Llfrg@aol.com
Subject: Problem with the /proc filesystem
Date: Wed, 17 Mar 2004 13:02:58 -0500
Sender: linux-c-programming-owner@vger.kernel.org
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Hello,

I am reading the first line of /proc/stat once per second. Sometimes a bug seems to occur, which is the value of the cpu idle time become lower than the cpu idle time collected one second earlier. Does anyone know what may be happening? Below is the output of my program. Idle means the last cpu idle time read from /proc/stat and old_id is the previous cpu idle time read.

Thanks

###Program output:

Idle: 210097666 old_id: 210097666
user: 100 nice: 0 system: 3 idle: 0 total: 103
 
Idle: 210097666 old_id: 210097666
user: 101 nice: 0 system: 2 idle: 0 total: 103
 
Idle: 210097666 old_id: 210097666
user: 78 nice: 0 system: 25 idle: 0 total: 103
 
Idle: 210097667 old_id: 210097666
user: 97 nice: 0 system: 6 idle: 1 total: 104
 
Idle: 210097666 old_id: 210097667
user: 102 nice: 0 system: 2 idle: 4294967295 total: 103
BUUUUG
 
Idle: 210097666 old_id: 210097666
user: 101 nice: 0 system: 2 idle: 0 total: 103
 
Idle: 210097667 old_id: 210097666
user: 101 nice: 0 system: 2 idle: 1 total: 104
 
Idle: 210097666 old_id: 210097667
user: 101 nice: 0 system: 3 idle: 4294967295 total: 103
BUUUUG