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RE: Crash
AR>> The system freezes after a few days of work. After the crash, I
AR>> performed Power OFF/ON - it reboots and continues working just
AR>> fine. No unusual/abnormal messages found in /var/log/* It seems
AR>> that there was called "cpu halt" instruction by kernel.
Well, you obviously don't know what "HLT" instruction does. It does the
following: stops the cpu AND waits for interruprs. I.e., every 18ms time
interrupt breaks it. Every keypress breaks it. Every mouse move breaks it.
Every disk access operation end breaks it. Kernel executes "hlt" when it
has nothing to do - so it doesn't burn electricity in vain, like any
good environmental-friendlt citizen should do :)
OK with this?
Now, random lockups might be good hint for faulty hardware - i.e., faulty
power supply, memory, etc. Or, if you don't use recent kernel (2.0.36 for
over-cautious or lazy to upgrade :), 2.2.4 for others), it might be
hint that someone is sending you teardrop or something alike. It might be
even automated tool - there are too many uber-idiots over there nowdays
which think it's very funny to crash machine of someone they even don't
know.
--
frodo@sharat.co.il \/ There shall be counsels taken
Stanislav Malyshev /\ Stronger than Morgul-spells
phone +972-3-9316425 /\ JRRT LotR.
http://sharat.co.il/frodo/ whois:!SM8333
- References:
- RE: Crash
- From: Alex Rier <alex@breakt.co.il>