Messages in this thread | | | Date | Sat, 25 Apr 2020 02:10:24 +0000 (UTC) | From | Christopher Lameter <> | Subject | Re: [PATCH v3 04/19] mm: slub: implement SLUB version of obj_to_index() |
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On Wed, 22 Apr 2020, Roman Gushchin wrote:
> On Wed, Apr 22, 2020 at 11:52:13PM +0000, Christoph Lameter wrote: > > On Wed, 22 Apr 2020, Roman Gushchin wrote: > > > > > enum stat_item { > > > ALLOC_FASTPATH, /* Allocation from cpu slab */ > > > @@ -86,6 +87,7 @@ struct kmem_cache { > > > unsigned long min_partial; > > > unsigned int size; /* The size of an object including metadata */ > > > unsigned int object_size;/* The size of an object without metadata */ > > > + struct reciprocal_value reciprocal_size; > > > > > > This needs to be moved further back since it is not an item that needs to > > be cache hot for the hotpaths. > > It could be relatively hot, because it's accessed for reading on every > accounted allocation.
The patch seems to only use it for setup and debugging? It is used for every "accounted" allocation???? Where? And what is an "accounted" allocation?
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