Re: [dpdk-dev] [PATCH 2/3] net/virtio: allocate fake mbuf in Rx queue

On 1/11/21 6:39 AM, Xia, Chenbo wrote: > Hi Maxime, > >> -Original Message- >> From: Maxime Coquelin >> Sent: Tuesday, December 22, 2020 12:15 AM >> To: dev@dpdk.org; Xia, Chenbo ; amore...@redhat.com; >> david.march...@redhat.com; olivier.m...@6wind.com >> Cc: Maxime Coquelin >> Subj

Re: [dpdk-dev] [PATCH 2/3] net/virtio: allocate fake mbuf in Rx queue

On 1/11/21 3:50 AM, Xia, Chenbo wrote: > Hi Maxime, > >> -Original Message- >> From: Maxime Coquelin >> Sent: Tuesday, December 22, 2020 12:15 AM >> To: dev@dpdk.org; Xia, Chenbo ; amore...@redhat.com; >> david.march...@redhat.com; olivier.m...@6wind.com >> Cc: Maxime Coquelin >> Subj

Re: [dpdk-dev] [PATCH 2/3] net/virtio: allocate fake mbuf in Rx queue

Hi Maxime, > -Original Message- > From: Maxime Coquelin > Sent: Tuesday, December 22, 2020 12:15 AM > To: dev@dpdk.org; Xia, Chenbo ; amore...@redhat.com; > david.march...@redhat.com; olivier.m...@6wind.com > Cc: Maxime Coquelin > Subject: [PATCH 2/3] net/virtio: allocate fake mbuf in Rx

Re: [dpdk-dev] [PATCH 2/3] net/virtio: allocate fake mbuf in Rx queue

Hi Maxime, > -Original Message- > From: Maxime Coquelin > Sent: Tuesday, December 22, 2020 12:15 AM > To: dev@dpdk.org; Xia, Chenbo ; amore...@redhat.com; > david.march...@redhat.com; olivier.m...@6wind.com > Cc: Maxime Coquelin > Subject: [PATCH 2/3] net/virtio: allocate fake mbuf in Rx

[dpdk-dev] [PATCH 2/3] net/virtio: allocate fake mbuf in Rx queue

While it is worth clarifying whether the fake mbuf in virtnet_rx struct is really necessary, it is sure that it heavily impacts cache usage by being part of the struct. Indeed, it takes uses cachelines, and requires alignement on a cacheline. Before this series, it means it took 120 bytes in virtn