Re: [dpdk-dev] [PATCH] net/mlx5: remove excessive data prefetch

2018-04-02 Thread Shahaf Shuler
Tuesday, March 13, 2018 2:45 PM, Adrien Mazarguil: > Subject: Re: [dpdk-dev] [PATCH] net/mlx5: remove excessive data prefetch > > On Mon, Mar 12, 2018 at 10:05:45AM -0700, Yongseok Koh wrote: > > In Enhanced Multi-Packet Send (eMPW), entire packet data is prefetched > > to LL

Re: [dpdk-dev] [PATCH] net/mlx5: remove excessive data prefetch

2018-03-13 Thread Adrien Mazarguil
On Mon, Mar 12, 2018 at 10:05:45AM -0700, Yongseok Koh wrote: > In Enhanced Multi-Packet Send (eMPW), entire packet data is prefetched to > LLC if it isn't inlined. Even though this helps reducing jitter when HW > fetches data by DMA, this can thresh the LLC with evicting precious data. > And if th

[dpdk-dev] [PATCH] net/mlx5: remove excessive data prefetch

2018-03-12 Thread Yongseok Koh
In Enhanced Multi-Packet Send (eMPW), entire packet data is prefetched to LLC if it isn't inlined. Even though this helps reducing jitter when HW fetches data by DMA, this can thresh the LLC with evicting precious data. And if the size of queue is large and there are many queues, this might not be