[dpdk-dev] [PATCH] ring: fix sc dequeue performance issue

[Thomas Monjalon]

2016-07-24 22:57, Ananyev, Konstantin:
> From: Jerin Jacob [mailto:jerin.jacob at caviumnetworks.com]
> > Use of rte_smb_wmb() instead of rte_smb_rmb() in sc dequeue function creates the additional overhead of waiting for all the STOREs to be
> > completed to local buffer from ring buffer memory. The sc dequeue function demands only LOAD-STORE barrier where LOADs from ring
> > buffer memory needs to be completed before tail pointer update. Changing to rte_smb_rmb() to enable the required LOAD-STORE barrier.
> > 
> > Fixes: ecc7d10e448e ("ring: guarantee dequeue ordering before tail update")
> > 
> > Signed-off-by: Jerin Jacob <jerin.jacob at caviumnetworks.com>
> 
> Acked-by: Konstantin Ananyev <konstantin.ananyev at intel.com>

Applied, thanks for the quick reaction