7-Current: turn off debugging (kqread?)

[Tom Evans]

On Fri, 2007-06-29 at 09:34 -0500, Kevin Kramer wrote:
> I know that debugging is turned on everywhere on 7-Current and I've read 
> UPDATING. But what I can't find is how to turn off debugging. I've tried 
> removing all debugging from the kernel, but it won't build. I can't find 
> any userland debugging notes to turn it off.
> 
> It is taking literally 5 minutes to login to my host and the same amount 
> of time to run top. Processes get stuck in kqread. Maybe this is not a 
> 7-Current debugging problem, but I need some guidance on where to go or 
> what to look for.
> 
> Any help appreciated.

In your kernel config, remove these lines if they exist:

options         INVARIANTS              # Enable calls of extra sanity
checking
options         INVARIANT_SUPPORT       # Extra sanity checks of
internal structures, required by INVARIANTS
options         WITNESS                 # Enable checks to detect
deadlocks and cycles
options         WITNESS_SKIPSPIN        # Don't run witness on spinlocks
for speed

You can leave the "options {K,D,G}DB" lines, they incur virtually now
performance costs.

You would get more help (possibly) if you tried posting on current@

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