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Using 'rte_mb' to synchronize the shared ring head/tail between producer and consumer will stall the pipeline and damage performance on the weak memory model platforms, such like aarch64. Meanwhile update the shared ring head and tail are observable and ordered between CPUs on IA. Optimized this full barrier with the one-way barrier can improve the throughput. On aarch64 n1sdp server this patch make testpmd throughput boost 2.1%. On Intel E5-2640, testpmd got 3.98% performance gain. Signed-off-by: Phil Yang <phil.yang@arm.com> Reviewed-by: Gavin Hu <gavin.hu@arm.com> Reviewed-by: Jakub Grajciar <jgrajcia@cisco.com>
DPDK is a set of libraries and drivers for fast packet processing. It supports many processor architectures and both FreeBSD and Linux. The DPDK uses the Open Source BSD-3-Clause license for the core libraries and drivers. The kernel components are GPL-2.0 licensed. Please check the doc directory for release notes, API documentation, and sample application information. For questions and usage discussions, subscribe to: users@dpdk.org Report bugs and issues to the development mailing list: dev@dpdk.org