[dpdk-dev] [PATCH] vhost: notify guest to fill buffer when there is no buffer

Linhaifeng haifeng.lin at huawei.com
Fri Feb 6 12:02:32 CET 2015
Previous message: [dpdk-dev] [PATCH] vhost: notify guest to fill buffer when there is no buffer
Next message: [dpdk-dev] [PATCH] vhost: notify guest to fill buffer when there is no buffer
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

On 2015/2/6 13:54, Xu, Qian Q wrote:
> Haifeng
> Are you using the latest dpdk branch with vhost-user patches? I have never met the issue.
> When is the vhost sample crashed? When you start VM or when you run sth in VM? Is your qemu 2.2? How about your memory info? Could you give more details about your steps? 
> 
> 
Hi,Xu
what is sth means?

I use the dpdk branch of a09f3e4c50467512970519943d26d9c5753584e0 and qemu branch of v2.2.0.

Here is my host information:
linux-mRFnwZ:/mnt/sdc/linhf/dpdk-vhost-user/dpdk # free
             total       used       free     shared    buffers     cached
Mem:      82450600   22555172   59895428          0    1506132    3205304
-/+ buffers/cache:   17843736   64606864
Swap:            0          0          0
linux-mRFnwZ:/mnt/sdc/linhf/dpdk-vhost-user/dpdk # cat /proc/meminfo |grep Huge
AnonHugePages:     20480 kB
HugePages_Total:    8192
HugePages_Free:     7052
HugePages_Rsvd:      396
HugePages_Surp:        0
Hugepagesize:       2048 kB
linux-mRFnwZ:/mnt/sdc/linhf/dpdk-vhost-user/dpdk # uname -a
Linux linux-mRFnwZ 3.0.93-0.8-default #1 SMP Tue Aug 27 08:44:18 UTC 2013 (70ed288) x86_64 x86_64 x86_64 GNU/Linux

Here is my guest infomation:
SUSE 11 SP3 with kernel 3.0.76-0.8-default


step:
umount /dev/hugepages/
rmmod igb_uio
rmmod rte_kni

mount -t hugetlbfs nodev /dev/hugepages -o pagesize=2M
echo 8192 > /sys/kernel/mm/hugepages/hugepages-2048kB/nr_hugepages

export RTE_SDK=/mnt/sdc/linhf/dpdk-vhost-user/dpdk
export RTE_TARGET=x86_64-native-linuxapp-gcc

modprobe uio
insmod ${RTE_SDK}/x86_64-native-linuxapp-gcc/kmod/igb_uio.ko
dpdk_nic_bind.py -b igb_uio 02:00.0 02:00.1

rmmod vhost_net
modprobe cuse
insmod ${RTE_SDK}/lib/librte_vhost/eventfd_link/eventfd_link.ko

${RTE_SDK}/examples/vhost/build/app/vhost-switch -c 0x300 -n 4 --huge-dir /dev/hugepages -m 2048 -- -p 0x1 --vm2vm 2 --mergeable 0 --zero-copy 0


qemu-system-x86_64 -name vm1 -enable-kvm -smp 2 -m 1024 \
-object memory-backend-file,id=mem,size=1024M,mem-path=/dev/hugepages,share=on -numa node,memdev=mem \
-chardev socket,id=chr0,path=/mnt/sdc/linhf/dpdk-vhost-user/vhost-net  \
-netdev type=vhost-user,id=net0,chardev=chr0 -device virtio-net-pci,netdev=net0,mac=00:00:00:00:00:01,csum=off,gso=off,guest_tso4=off,guest_tso6=off,guest_ecn=off \
-chardev socket,id=chr1,path=/mnt/sdc/linhf/dpdk-vhost-user/vhost-net  \
-netdev type=vhost-user,id=net1,chardev=chr1 -device virtio-net-pci,netdev=net1,mac=00:00:00:00:00:02,csum=off,gso=off,guest_tso4=off,guest_tso6=off,guest_ecn=off \
-drive file=/mnt/sdc/linhf/vm1.img -vnc :0
qemu-system-x86_64: -netdev type=vhost-user,id=net0,chardev=chr0: chardev "chr0" went up

qemu-system-x86_64: -netdev type=vhost-user,id=net1,chardev=chr1: chardev "chr1" went up


EAL: Detected lcore 0 as core 0 on socket 1
EAL: Detected lcore 1 as core 1 on socket 1
EAL: Detected lcore 2 as core 9 on socket 1
EAL: Detected lcore 3 as core 10 on socket 1
EAL: Detected lcore 4 as core 0 on socket 0
EAL: Detected lcore 5 as core 1 on socket 0
EAL: Detected lcore 6 as core 9 on socket 0
EAL: Detected lcore 7 as core 10 on socket 0
EAL: Detected lcore 8 as core 0 on socket 1
EAL: Detected lcore 9 as core 1 on socket 1
EAL: Detected lcore 10 as core 9 on socket 1
EAL: Detected lcore 11 as core 10 on socket 1
EAL: Detected lcore 12 as core 0 on socket 0
EAL: Detected lcore 13 as core 1 on socket 0
EAL: Detected lcore 14 as core 9 on socket 0
EAL: Detected lcore 15 as core 10 on socket 0
EAL: Support maximum 128 logical core(s) by configuration.
EAL: Detected 16 lcore(s)
EAL: Setting up memory...
EAL: Ask a virtual area of 0x200000000 bytes
EAL: Virtual area found at 0x7f3b57400000 (size = 0x200000000)
EAL: Ask a virtual area of 0x200000 bytes
EAL: Virtual area found at 0x7f3b57000000 (size = 0x200000)
EAL: Ask a virtual area of 0x1ffe00000 bytes
EAL: Virtual area found at 0x7f3957000000 (size = 0x1ffe00000)
EAL: Requesting 1024 pages of size 2MB from socket 1
EAL: WARNING: clock_gettime cannot use CLOCK_MONOTONIC_RAW and HPET is not available - clock timings may be less accurate.
EAL: TSC frequency is ~2400234 KHz
EAL: Master core 8 is ready (tid=5a596800)
EAL: Core 9 is ready (tid=58d34700)
EAL: PCI device 0000:02:00.0 on NUMA socket -1
EAL:   probe driver: 8086:10fb rte_ixgbe_pmd
EAL:   PCI memory mapped at 0x7f3b57200000
EAL:   PCI memory mapped at 0x7f3b57280000
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 0000:02:00.1 on NUMA socket -1
EAL:   probe driver: 8086:10fb rte_ixgbe_pmd
EAL:   PCI memory mapped at 0x7f3b57284000
EAL:   PCI memory mapped at 0x7f3b57304000
PMD: eth_ixgbe_dev_init(): MAC: 2, PHY: 1
PMD: eth_ixgbe_dev_init(): port 1 vendorID=0x8086 deviceID=0x10fb
pf queue num: 0, configured vmdq pool num: 64, each vmdq pool has 2 queues
PMD: ixgbe_dev_rx_queue_setup(): sw_ring=0x7f3957aebbc0 hw_ring=0x7f3b57028580 dma_addr=0xedf428580
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_rx_queue_setup(): sw_ring=0x7f39579ca040 hw_ring=0x7f39a2eb3b80 dma_addr=0xf2b6b3b80
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=127.
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=0x7f39579c7f00 hw_ring=0x7f39a2ec3c00 dma_addr=0xf2b6c3c00
PMD: set_tx_function(): Using full-featured tx code path
PMD: set_tx_function():  - txq_flags = e01 [IXGBE_SIMPLE_FLAGS=f01]
PMD: set_tx_function():  - tx_rs_thresh = 32 [RTE_PMD_IXGBE_TX_MAX_BURST=32]
PMD: ixgbe_dev_tx_queue_setup(): sw_ring=0x7f39579c5dc0 hw_ring=0x7f39a2ed3c00 dma_addr=0xf2b6d3c00
PMD: set_tx_function(): Using full-featured tx code path
PMD: set_tx_function():  - txq_flags = e01 [IXGBE_SIMPLE_FLAGS=f01]
PMD: set_tx_function():  - tx_rs_thresh = 32 [RTE_PMD_IXGBE_TX_MAX_BURST=32]
VHOST_PORT: Max virtio devices supported: 64
VHOST_PORT: Port 0 MAC: 00 1b 21 69 f7 c8
VHOST_PORT: Skipping disabled port 1
VHOST_DATA: Procesing on Core 9 started
VHOST_CONFIG: socket created, fd:15
VHOST_CONFIG: bind to vhost-net
VHOST_CONFIG: new virtio connection is 16
VHOST_CONFIG: new device, handle is 0
VHOST_CONFIG: new virtio connection is 17
VHOST_CONFIG: new device, handle is 1
VHOST_CONFIG: read message VHOST_USER_SET_OWNER
VHOST_CONFIG: read message VHOST_USER_GET_FEATURES
VHOST_CONFIG: read message VHOST_USER_SET_VRING_CALL
VHOST_CONFIG: vring call idx:0 file:18
VHOST_CONFIG: read message VHOST_USER_SET_VRING_CALL
VHOST_CONFIG: vring call idx:1 file:19
VHOST_CONFIG: read message VHOST_USER_SET_OWNER
VHOST_CONFIG: read message VHOST_USER_GET_FEATURES
VHOST_CONFIG: read message VHOST_USER_SET_VRING_CALL
VHOST_CONFIG: vring call idx:0 file:20
VHOST_CONFIG: read message VHOST_USER_SET_VRING_CALL
VHOST_CONFIG: vring call idx:1 file:21
VHOST_CONFIG: read message VHOST_USER_SET_VRING_CALL
VHOST_CONFIG: vring call idx:0 file:22
VHOST_CONFIG: read message VHOST_USER_SET_VRING_CALL
VHOST_CONFIG: vring call idx:1 file:18
VHOST_CONFIG: read message VHOST_USER_SET_FEATURES
VHOST_CONFIG: read message VHOST_USER_SET_MEM_TABLE
VHOST_CONFIG: mapped region 0 fd:19 to 0xffffffffffffffff sz:0xa0000 off:0x0
VHOST_CONFIG: mmap qemu guest failed.
VHOST_CONFIG: read message VHOST_USER_SET_VRING_NUM
VHOST_CONFIG: read message VHOST_USER_SET_VRING_BASE
VHOST_CONFIG: read message VHOST_USER_SET_VRING_ADDR
./run_dpdk_vhost.sh: line 19: 20796 Segmentation fault      ${RTE_SDK}/examples/vhost/build/app/vhost-switch -c 0x300 -n 4 --huge-dir /dev/hugepages -m 2048 -- -p 0x1 --vm2vm 2 --mergeable 0 --zero-copy 0

> 
> -----Original Message-----
> From: Linhaifeng [mailto:haifeng.lin at huawei.com] 
> Sent: Friday, February 06, 2015 12:02 PM
> To: Xu, Qian Q; Xie, Huawei
> Cc: lilijun; liuyongan at huawei.com; dev at dpdk.org
> Subject: Re: [dpdk-dev] [PATCH] vhost: notify guest to fill buffer when there is no buffer
> 
> 
> 
> On 2015/2/4 9:38, Xu, Qian Q wrote:
>> 4. Launch the VM1 and VM2 with virtio device, note: you need use qemu version>2.1 to enable the vhost-user server's feature. Old qemu such as 1.5,1.6 didn't support it.
>> Below is my VM1 startup command, for your reference, similar for VM2. 
>> /home/qemu-2.2.0/x86_64-softmmu/qemu-system-x86_64 -name us-vhost-vm1 -cpu host -enable-kvm -m 2048 -object memory-backend-file,id=mem,size=2048M,mem-path=/mnt/huge,share=on -numa node,memdev=mem -mem-prealloc -smp 2 -drive file=/home/img/dpdk1-vm1.img -chardev socket,id=char0,path=/home/dpdk-vhost/vhost-net -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce -device virtio-net-pci,mac=00:00:00:00:00:01, -nographic
>>
>> 5. Then in the VM, you can have the same operations as before, send packet from virtio1 to virtio2. 
>>
>> Pls let me know if any questions, issues. 
> 
> Hi xie & xu
> 
> When I try to start VM vhost-switch crashed.
> 
> VHOST_CONFIG: read message VHOST_USER_SET_MEM_TABLE
> VHOST_CONFIG: mapped region 0 fd:19 to 0xffffffffffffffff sz:0xa0000 off:0x0
> VHOST_CONFIG: mmap qemu guest failed.
> VHOST_CONFIG: read message VHOST_USER_SET_VRING_NUM
> VHOST_CONFIG: read message VHOST_USER_SET_VRING_BASE
> VHOST_CONFIG: read message VHOST_USER_SET_VRING_ADDR
> run_dpdk_vhost.sh: line 19:  1854 Segmentation fault      ${RTE_SDK}/examples/vhost/build/app/vhost-switch -c 0x300 -n 4 --huge-dir /dev/hugepages -m 2048 -- -p 0x1 --vm2vm 2 --mergeable 0 --zero-copy 0
> 
> 
> 

-- 
Regards,
Haifeng
Previous message: [dpdk-dev] [PATCH] vhost: notify guest to fill buffer when there is no buffer
Next message: [dpdk-dev] [PATCH] vhost: notify guest to fill buffer when there is no buffer
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]
More information about the dev mailing list