Re: [dpdk-dev] [PATCH v2 1/4] igb_uio: add wc option

2018-06-29 Thread Ferruh Yigit
On 6/29/2018 9:35 AM, Rafał Kozik wrote: > 2018-06-28 16:32 GMT+02:00 Ferruh Yigit : >> On 6/28/2018 2:15 PM, Rafal Kozik wrote: >>> Write combining (WC) increases NIC performance by making better >>> utilization of PCI bus, but cannot be use by all PMDs. >>> >>> To get internal_addr memory need to

Re: [dpdk-dev] [PATCH v2 1/4] igb_uio: add wc option

2018-06-29 Thread Rafał Kozik
2018-06-28 16:32 GMT+02:00 Ferruh Yigit : > On 6/28/2018 2:15 PM, Rafal Kozik wrote: >> Write combining (WC) increases NIC performance by making better >> utilization of PCI bus, but cannot be use by all PMDs. >> >> To get internal_addr memory need to be mapped. But as memory could not be >> mapped

Re: [dpdk-dev] [PATCH v2 1/4] igb_uio: add wc option

2018-06-28 Thread Ferruh Yigit
On 6/28/2018 2:15 PM, Rafal Kozik wrote: > Write combining (WC) increases NIC performance by making better > utilization of PCI bus, but cannot be use by all PMDs. > > To get internal_addr memory need to be mapped. But as memory could not be > mapped twice: with and without WC, it should be skippe