[patch] zfs livelock and thread priorities

John Baldwin jhb at freebsd.org
Mon May 18 17:07:39 UTC 2009

On Saturday 16 May 2009 12:40:44 pm Ben Kelly wrote:
>    1) It changes the kproc(9) API by adding a kproc_create_priority()  
> function that allows you to set the priority of the newly created  
> thread.  I'm not sure how people feel about this.

Actually, I almost think we should just add a priority argument to each of the 
routines that creates a new kthread/kproc.  Perhaps allow a priority of 0 to 
let the thread run with the default priority.  Hmm, it looks like kthreads 
default to running with whatever thread0 runs at (PVM) which is probably not 
really ideal.  Having an explicit priority for every kthread would probably 
be best.  Most kthreads should probably be at PZERO by default I think.

John Baldwin

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