Messages in this thread | | | Date | Wed, 5 Mar 2008 13:06:30 -0800 (PST) | From | Christoph Lameter <> | Subject | Re: [rfc][patch 1/3] slub: fix small HWCACHE_ALIGN alignment |
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On Tue, 4 Mar 2008, David Miller wrote:
> > Huh?? It is not a new definition, it is exactly what SLAB does. And > > then you go and do something different and claim that you follow > > what slab does. > > I completely agree with Nick.
So you also want subalignment because of cacheline crossing for 24 byte slabs? We then only have 2 objects per cacheline instead of 3 but no crossing anymore.
Well okay if there are multiple requests then lets merge Nick's patch that does this. Still think that this will do much ... Instead of 170 we will only have 128 objects per slab (64 byte cacheline).
It will affect the following slab caches (mm) reducing the density of objects.
scsi_bidi_sdb numa_policy fasync_cache xfs_bmap_free_item xfs_dabuf fstrm_item dm_target_io
Nothing related to networking....
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