Re: [dpdk-dev] [PATCH 0/5] vmxnet3 pmd fixes/improvement

[Thomas Monjalon <thomas.monjalon@6wind.com>]

Hi Yong,

Is there any progress with this patchset?

Thanks
-- 
Thomas

2014-10-22 07:07, Cao, Waterman:
> Hi Yong,
> 
> 	We verified your patch with VMWare ESXi 5.5 and found VMware L2fwd and L3fwd cmd can't run.
>     But We use DPDK1.7_rc1 package to validate VMware regression, It works fine.
> .
> 1.[Test Environment]:
>  - VMware ESXi 5.5;
>  - 2 VM
>  - FC20 on Host / FC20-64 on VM
>  - Crown Pass server (E2680 v2 ivy bridge )
>  - Niantic 82599
> 
> 2. [Test Topology]:
> 	Create 2VMs (Fedora 18, 64bit) .
>     We pass through one physical port(Niantic 82599) to each VM, and also create one virtual device: vmxnet3 in each VM. 
>  	To connect with two VMs, we use one vswitch to connect two vmxnet3 interface.
>     Then, PF1 and vmxnet3A are in VM1; PF2 and vmxnet3B are in VM2.
> 	The traffic flow for l2fwd/l3fwd is as below::
> 	Ixia -> PF1 -> vmxnet3A -> vswitch -> vmxnet3B -> PF2 -> Ixia. (traffic generator)
> 
> 3.[ Test Step]:
> 
> tar dpdk1.8.rc1 ,compile and run;
> 
> L2fwd:  ./build/l2fwd -c f -n 4 -- -p 0x3
> L3fwd:  ./build/l3fwd-vf -c 0x6 -n 4 -- -p 0x3 -config "(0,0,1),(1,0,2)"
> 
> 4.[Error log]:
> 
> ---VMware L2fwd:---
> 
> EAL:   0000:0b:00.0 not managed by UIO driver, skipping
> EAL: PCI device 0000:13:00.0 on NUMA socket -1
> EAL:   probe driver: 8086:10fb rte_ixgbe_pmd
> EAL:   PCI memory mapped at 0x7f678ae6e000
> EAL:   PCI memory mapped at 0x7f678af34000
> PMD: eth_ixgbe_dev_init(): MAC: 2, PHY: 17, SFP+: 5
> PMD: eth_ixgbe_dev_init(): port 0 vendorID=0x8086 deviceID=0x10fb
> EAL: PCI device 0000:1b:00.0 on NUMA socket -1
> EAL:   probe driver: 15ad:7b0 rte_vmxnet3_pmd
> EAL:   PCI memory mapped at 0x7f678af33000
> EAL:   PCI memory mapped at 0x7f678af32000
> EAL:   PCI memory mapped at 0x7f678af30000
> Lcore 0: RX port 0
> Lcore 1: RX port 1
> Initializing port 0... PMD: ixgbe_dev_rx_queue_setup(): sw_ring=0x7f670b0f5580 hw_ring=0x7f6789fe5280 dma_addr=0x373e5280
> PMD: ixgbe_dev_rx_queue_setup(): Rx Burst Bulk Alloc Preconditions are satisfied. Rx Burst Bulk Alloc function will be used on port=0, queue=0.
> PMD: ixgbe_dev_rx_queue_setup(): Vector rx enabled, please make sure RX burst size no less than 32.
> PMD: ixgbe_dev_tx_queue_setup(): sw_ring=0x7f670b0f3480 hw_ring=0x7f671b820080 dma_addr=0x100020080
> PMD: ixgbe_dev_tx_queue_setup(): Using simple tx code path
> PMD: ixgbe_dev_tx_queue_setup(): Vector tx enabled.
> done: 
> Port 0, MAC address: 90:E2:BA:4A:33:78
> 
> Initializing port 1... EAL: Error - exiting with code: 1
>   Cause: rte_eth_tx_queue_setup:err=-22, port=1
> 
> ---VMware L3fwd:---
> 
> EAL: TSC frequency is ~2793265 KHz
> EAL: Master core 1 is ready (tid=9f49a880)
> EAL: Core 2 is ready (tid=1d7f2700)
> EAL: PCI device 0000:0b:00.0 on NUMA socket -1
> EAL:   probe driver: 15ad:7b0 rte_vmxnet3_pmd
> EAL:   0000:0b:00.0 not managed by UIO driver, skipping
> EAL: PCI device 0000:13:00.0 on NUMA socket -1
> EAL:   probe driver: 8086:10fb rte_ixgbe_pmd
> EAL:   PCI memory mapped at 0x7f079f3e4000
> EAL:   PCI memory mapped at 0x7f079f4aa000
> PMD: eth_ixgbe_dev_init(): MAC: 2, PHY: 17, SFP+: 5
> PMD: eth_ixgbe_dev_init(): port 0 vendorID=0x8086 deviceID=0x10fb
> EAL: PCI device 0000:1b:00.0 on NUMA socket -1
> EAL:   probe driver: 15ad:7b0 rte_vmxnet3_pmd
> EAL:   PCI memory mapped at 0x7f079f4a9000
> EAL:   PCI memory mapped at 0x7f079f4a8000
> EAL:   PCI memory mapped at 0x7f079f4a6000
> Initializing port 0 ... Creating queues: nb_rxq=1 nb_txq=1...  Address:90:E2:BA:4A:33:78, Allocated mbuf pool on socket 0
> LPM: Adding route 0x01010100 / 24 (0)
> LPM: Adding route 0x02010100 / 24 (1)
> LPM: Adding route 0x03010100 / 24 (2)
> LPM: Adding route 0x04010100 / 24 (3)
> LPM: Adding route 0x05010100 / 24 (4)
> LPM: Adding route 0x06010100 / 24 (5)
> LPM: Adding route 0x07010100 / 24 (6)
> LPM: Adding route 0x08010100 / 24 (7)
> txq=0,0,0 PMD: ixgbe_dev_tx_queue_setup(): sw_ring=0x7f071f6f3c80 hw_ring=0x7f079e5e5280 dma_addr=0x373e5280
> PMD: ixgbe_dev_tx_queue_setup(): Using simple tx code path
> PMD: ixgbe_dev_tx_queue_setup(): Vector tx enabled.
> 
> Initializing port 1 ... Creating queues: nb_rxq=1 nb_txq=1...  Address:00:0C:29:F0:90:41, txq=1,0,0 EAL: Error - exiting with code: 1
>   Cause: rte_eth_tx_queue_setup: err=-22, port=1
> 
> 
> Can you help to recheck this patch with latest DPDK code?
> 
> Regards
> Waterman 
> 
> -----Original Message-----
> >From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Yong Wang
> >Sent: Wednesday, October 22, 2014 6:10 AM
> >To: Patel, Rashmin N; Stephen Hemminger
> >Cc: dev@dpdk.org
> >Subject: Re: [dpdk-dev] [PATCH 0/5] vmxnet3 pmd fixes/improvement
> >
> >Rashmin/Stephen,
> >
> >Since you have worked on vmxnet3 pmd drivers, I wonder if you can help review this set of patches.  Any other reviews/test verifications are welcome of course.  We have reviewed/tested all patches internally.
> >
> >Yong
> >________________________________________
> >From: dev <dev-bounces@dpdk.org> on behalf of Yong Wang <yongwang@vmware.com>
> >Sent: Monday, October 13, 2014 2:00 PM
> >To: Thomas Monjalon
> >Cc: dev@dpdk.org
> >Subject: Re: [dpdk-dev] [PATCH 0/5] vmxnet3 pmd fixes/improvement
> >
> >Only the last one is performance related and it merely tries to give hints to the compiler to hopefully make branch prediction more efficient.  It also moves a constant assignment out of the pkt polling loop.
> >
> >We did performance evaluation on a Nehalem box with 4cores@2.8GHz x 2 socket:
> >On the DPDK-side, it's running some l3 forwarding apps in a VM on ESXi with one core assigned for polling.  The client side is pktgen/dpdk, pumping 64B tcp packets at line rate.  Before the patch, we are seeing ~900K PPS with 65% cpu of a core used for DPDK.  After the patch, we are seeing the same pkt rate with only 45% of a core used.  CPU usage is collected factoring our the idle loop cost.  The packet rate is a result of the mode we used for vmxnet3 (pure emulation mode running default number of hypervisor contexts).  I can add these info in the review request.
> >
> >Yong
> >________________________________________
> >From: Thomas Monjalon <thomas.monjalon@6wind.com>
> >Sent: Monday, October 13, 2014 1:29 PM
> >To: Yong Wang
> >Cc: dev@dpdk.org
> >Subject: Re: [dpdk-dev] [PATCH 0/5] vmxnet3 pmd fixes/improvement
> >
> >Hi,
> >
> >2014-10-12 23:23, Yong Wang:
> >> This patch series include various fixes and improvement to the
> >> vmxnet3 pmd driver.
> >>
> >> Yong Wang (5):
> >>   vmxnet3: Fix VLAN Rx stripping
> >>   vmxnet3: Add VLAN Tx offload
> >>   vmxnet3: Fix dev stop/restart bug
> >>   vmxnet3: Add rx pkt check offloads
> >>   vmxnet3: Some perf improvement on the rx path
> >
> >Please, could describe what is the performance gain for these patches?
> >Benchmark numbers would be appreciated.
> >
> >Thanks
> >--
> >Thomas