Messages in this thread | | | Date | Mon, 8 Dec 2014 07:57:45 -0800 | From | "Paul E. McKenney" <> | Subject | Re: frequent lockups in 3.18rc4 |
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On Mon, Dec 08, 2014 at 10:28:53AM -0500, Sasha Levin wrote: > On 12/08/2014 09:33 AM, Sasha Levin wrote: > > On 12/08/2014 12:20 AM, Paul E. McKenney wrote: > >> > I have seen this caused by lost IPIs, but you have to lose two of them, > >> > which seems less than fully likely. > > It does seem that it can cause full blown stalls as well, just pretty > > rarely (notice the lack of any prints before): > > Forgot to mentioned, I cranked the rcu lockup timeout to 300 seconds and got > that stall.
So with the default of 21 seconds, you presumably get huge numbers of RCU CPU stall warnings?
Thanx, Paul
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