Re: [BUG] Softlockup detected with linux-2.6.14-rt6

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Luca Falavigna wrote:
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Luca Falavigna ha scritto:
| Actually I am testing linux-2.6.14-rt13. If this problem come out again,
| I will notify you ASAP.

Unfortunately this soft lockup bug affects version 2.6.14-rt13 too :(
Stack traces are almost the same, except base addresses.

The bug was much harder to track down this time. Kernel detected a soft
lockup bug after about three days of uptime.

I noticed another strange behaviour. When I rebooted the machine
(actually pushing reset button, not CTRL+ALT+CANC or SysRq at all), it
became *very* slow. GRUB took up to five seconds to be fully loaded
(usualy it takes only a fraction of second) and the initial phase of
booting the kernel was about 4 times slower. Even after a power off this
behaviour was still present! Need more coffee?

The slow booting sounds a lot like the RCU_TORTURE_TEST slowing things down. You might try turning off RCU_TORTURE_TEST or setting it to be a module.


Regards,
- --
                    Luca

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   kr
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