RE: Low crypto performance of AES-NI MB PMD on multi-core
Hi Koji, > -Original Message- > From: Koji Ikeura > Sent: Wednesday, October 5, 2022 5:51 AM > To: users@dpdk.org > Subject: Low crypto performance of AES-NI MB PMD on multi-core > > Hi, > > I am using dpdk-test-crypto-perf to measure the crypto performance of AES- > NI MB PMD. > The performance reports say "The SW PMD performance is linear scaling out > with core numbers", but there are no result on multiple cores and this is not > the case in my environment. > What about your environment? Does anyone know how to improve it? > Many thanks for reporting this. We are working on a fix and we will open a Bugzilla issue to track this. Thanks, Pablo
USB device support in DPDK
Will DPDK support USB-Ethernet devices? Thanks.
Re: USB device support in DPDK
02/12/2022 14:01, John Bize: > Will DPDK support USB-Ethernet devices? If there is a need and an advantage for USB devices to be supported in DPDK, why not? In general, DPDK supports what is contributed and maintained.
Re: Low crypto performance of AES-NI MB PMD on multi-core
Hi Pablo, Thanks for the replay. I'm in no hurry as I fixed it temporarily, but I'm waiting for the glitch to be officially fixed. Thanks, Koji On 2022/12/05 18:04, De Lara Guarch, Pablo wrote: Hi Koji, -Original Message- From: Koji Ikeura Sent: Wednesday, October 5, 2022 5:51 AM To: users@dpdk.org Subject: Low crypto performance of AES-NI MB PMD on multi-core Hi, I am using dpdk-test-crypto-perf to measure the crypto performance of AES- NI MB PMD. The performance reports say "The SW PMD performance is linear scaling out with core numbers", but there are no result on multiple cores and this is not the case in my environment. What about your environment? Does anyone know how to improve it? Many thanks for reporting this. We are working on a fix and we will open a Bugzilla issue to track this. Thanks, Pablo
Re: USB device support in DPDK
On Fri, 2 Dec 2022 13:01:03 + John Bize wrote: > Will DPDK support USB-Ethernet devices? > > Thanks. > Not directly. You could use one of the mechanisms to access kernel devices like XDP.
Re: USB device support in DPDK
On Mon, 05 Dec 2022 10:07:44 +0100 Thomas Monjalon wrote: > 02/12/2022 14:01, John Bize: > > Will DPDK support USB-Ethernet devices? > > If there is a need and an advantage for USB devices > to be supported in DPDK, why not? > > In general, DPDK supports what is contributed and maintained. > > One recent Linux kernel thread was about removing all the RNDIS USB devices because there are fundamental security problems with the protocol.
How do you calculate DPDK mempool requirements?
How do you figure out what settings need to be used to correctly configure a DPDK mempool for your application? Specifically using rte_pktmbuf_pool_create(): - n, the number of elements in the mbuf pool - cache_size - priv_size - data_room_size EAL arguments: - n number of memory channels - r number of memory ranks - m amount of memory to preallocate at startup - in-memory no shared data structures - IOVA mode - huge-worker-stack My setup: - 2 x Intel Xeon Gold 6348 CPU @ 2.6 Ghz - 28 cores per socket - Max 3.5 Ghz - Hyperthreading disabled - Ubuntu 22.04.1 LTS - Kernel 5.15.0-53-generic - Cores set to performance governor - 4 x Sabrent 2TB Rocket 4 Plus in RAID0 Config - 128 GB DDR4 Memory - 10 1GB HugePages (Can change to what is required) - 1 x Mellanox ConnectX-5 100gbe NIC - 31:00.0 Ethernet controller: Mellanox Technologies MT27800 Family [ConnectX-5] - Firmware-version: 16.35.1012 - UDP Source: - 100 gbe NIC - 9000 MTU Packets - ipv4-udp packets Will be receiving 10GB/s UDP packets over a 100gbe link. Right now trying to get it working for 2GB/s to a single queue. Reviewed the DPDK Programmers guide: https://doc.dpdk.org/guides/prog_guide/mempool_lib.html Also searched online but the resources seem limited. Would appreciate any help or a push in the right direction. Sincerely, DB
Re: How do you calculate DPDK mempool requirements?
On Mon, 5 Dec 2022 11:32:40 -0600 Dylan Baros wrote: > How do you figure out what settings need to be used to correctly configure > a DPDK mempool for your application? > > Specifically using rte_pktmbuf_pool_create(): > > - n, the number of elements in the mbuf pool > - cache_size > - priv_size > - data_room_size > > EAL arguments: > - n number of memory channels > - r number of memory ranks > - m amount of memory to preallocate at startup > - in-memory no shared data structures > - IOVA mode > - huge-worker-stack > > My setup: > >- 2 x Intel Xeon Gold 6348 CPU @ 2.6 Ghz > - 28 cores per socket > - Max 3.5 Ghz > - Hyperthreading disabled > - Ubuntu 22.04.1 LTS > - Kernel 5.15.0-53-generic > - Cores set to performance governor > - 4 x Sabrent 2TB Rocket 4 Plus in RAID0 Config > - 128 GB DDR4 Memory > - 10 1GB HugePages (Can change to what is required) >- 1 x Mellanox ConnectX-5 100gbe NIC > - 31:00.0 Ethernet controller: Mellanox Technologies MT27800 Family > [ConnectX-5] > - Firmware-version: 16.35.1012 >- UDP Source: > - 100 gbe NIC > - 9000 MTU Packets > - ipv4-udp packets > > Will be receiving 10GB/s UDP packets over a 100gbe link. Right now trying > to get it working for 2GB/s to a single queue. > > Reviewed the DPDK Programmers guide: > https://doc.dpdk.org/guides/prog_guide/mempool_lib.html Also searched > online but the resources seem limited. Would appreciate any help or a push > in the right direction. > > > Sincerely, > > DB Compute the maximum number of live memory elements in the system. This depends on the NIC card and the queue depths. Add some additional overhead for packets in flight. Size of mbuf depends on MTU, amount of reserved private area etc.
