[CentOS] Strange messages after installing Quad-core processor

[Toby Bluhm]

On 6/7/2013 8:10 AM, Robert Heller wrote:
> After installing a Phenom II X4 processor (replacing a single core Semperon) I
> am getting these messages on the console and in dmesg:
>
> Warning Timer ISR/2: Time went backwards: delta=-250135996 delta_cpu=13864004 shadow=1355887856733 off=870052783 processed=1357008044419 cpu_processed=1356744044419
>   0: 1357004044419
>   1: 1356696044419
>   2: 1356744044419
>   3: 1356696044419
> printk: 41 messages suppressed.


I had an AMD box that started reporting time going backwards. Turned out 
the heatsink was loose because the retainer tab cracked off - cpu 
continuously cycled thru overheat, throttle down, overheat, throttle 
down, etc.