[dpdk-users] Why not prefetch the second cache line of struct rte_mbuf for better performance ?

[Dell Will]

Hello, everybody

I find that many codes in DPDK only prefetch the first cache line of struct 
rte_mbuf.
The struct rte_mbuf has 2 cache lines.
Why not prefetch the second line ?
Is it hinted that the CPU (x64 or ARM) always automatically prefetch the next 
immediately followed cache line ?

Thanks a lot !

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