 | | Re: a "power fail " provocate by the command "make -j " in a Compaq
DL560 | Re: a "power fail " provocate by the command "make -j " in a Compaq
DL560 2005-01-25 - By John Haxby
Back
Roger Pe?a Escobio wrote:
>the spec that come with courier-authlib "call" the make command with the opcion
>%{_smp_mflags} which mean, in my case, that make is called with the opcion -j8
; when this
>happen, the server just poweroff (not shutdown, not reboot, just poweroff)
with the front
>led indicating a "power fail".
>
>If I move to the BUILD directory and manualy execute the "make -jN" command I
can
>reproduce this behavior if N >= 4 (the real number of CPU), if i use N <= 3 the
>compilation goes without problems
>
>this is not a normal behavior, but I do not know if this is caused by a damage
hardware or
>because a software problem.
>
>
No one else answered, so I'll say what I suspect. This sounds very
much like a power supply problem: if you get all four CPUs working hard
the power supply can't cope and it shuts down. You can probably cause
the same power failure by kicking off enough CPU intensive programs.
jch
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