On Fri, Feb 13, 2015 at 09:49:24AM -0600, Christoph Lameter wrote: > On Fri, 13 Feb 2015, Joonsoo Kim wrote: > > > > + *p++ = freelist; > > > + freelist = get_freepointer(s, freelist); > > > + allocated++; > > > + } > > > > Fetching all objects with holding node lock could result in enomourous > > lock contention. How about getting free ojbect pointer without holding > > the node lock? We can temporarilly store all head of freelists in > > array p and can fetch each object pointer without holding node lock. > > > Could do that but lets first see if there is really an issue. The other > cpu sharing the same partial lists presumaly have cpu local objects to get > through first before they hit this lock.
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