On 10/9/2019 12:17 PM, Jakub Grajciar -X (jgrajcia - PANTHEON TECHNOLOGIES at Cisco) wrote: > > >>>>> -----Original Message----- >>>>> From: dev <dev-boun...@dpdk.org> On Behalf Of Phil Yang >>>>> Sent: Monday, August 26, 2019 7:00 PM >>>>> To: jgraj...@cisco.com; dev@dpdk.org >>>>> Cc: tho...@monjalon.net; jer...@marvell.com; Honnappa Nagarahalli >>>>> <honnappa.nagaraha...@arm.com>; damar...@cisco.com; nd >>>> <n...@arm.com> >>>>> Subject: [dpdk-dev] [PATCH v1] net/memif: optimized with one-way >>>>> barrier >>>>> >>>>> 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.y...@arm.com> >>>>> Reviewed-by: Gavin Hu <gavin...@arm.com> >>> >>> The patch is looking good, but 'MEMIF_VERSION_MAJOR' in memif.h needs >>> to be set to 3 as ring pointers are no longer volatile. >> >> Updated in v2. >> Thanks for your comments. >> >> Thanks, >> Phil > > I jumped the gun with the version bump. The change doesn't break > compatibility. I'm putting reviewed label on v1. > > Sorry for the inconvenience. > > Reviewed-by: Jakub Grajciar <jgraj...@cisco.com> >
Applied to dpdk-next-net/master, thanks.
