Messages in this thread | | | Date | Fri, 23 Apr 2010 16:49:26 +0800 | From | Yong Zhang <> | Subject | Re: [PATCH] lockdep: Add nr_save_trace_invocations counter |
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On Fri, Apr 23, 2010 at 10:31:16AM +0200, John Kacur wrote: > > 8752+871+8+95+5+28+543+28+543+15=10888 > > > > So you get a stack-trace for each direct-dependency, and you get a > > stack-trace for each LOCK_state, the sum seems to match the total > > invocations. > > > > Non of these numbers look strange.. > > > > As I told Peter privately the laptop that triggered the > MAX_STACK_TRACE_ENTRIES every time, has met an > unfortunate early demise. However, I think it was the config - not the > hardware. On this machine where the above > numbers come from, I believe I have less debug options configured - > but it is running the exact same kernel as > the laptop was. (2.6.33.2-rt13)
Through a rough computation: MAX_STACK_TRACE_ENTRIES/10888 = 24 That means the average stack deepth is about 24. So I'm thinking if we can take a check on the biggest deepth? Could this make sense?
Thanks, Yong
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