Intel Omin-Path Architecture 搭建调优与测试
OPA在Centos上的搭建
1. 首先确认Omni-Path Host Fabric Interfaces (HFIs)
# yum install –y pciutils
# lspci -vv | grep Omni
:00.0 Fabric controller: Intel Corporation Omni-Path HFI Silicon Series [discrete] (rev )
Subsystem: Intel Corporation Omni-Path HFI Silicon Series [discrete]
2. 安装Intel® Omni-Path Software
Intel® Omni-Path Software可以通过下载安装包的方式安装也可以通过从包源(Package Source)的方式，安装包可以从以下链接下载，
https://downloadcenter.intel.com/search?keyword=Omni-Path
由于Intel® Omni-Path Software已经被打包进CentOS的包源，我们这里采用从包源来安装。
首先安装前提包：
# yum install -y libibmad libibverbs librdmacm libibcm qperf perftest rdma infinipath-psm expat elfutils-libelf-devel libstdc++-devel gcc-gfortran atlas tcl expect tcsh sysfsutils pciutils bc libibumad libibumad-devel libibumad libibumad-devel libibverbs-devel libibmaddevel librdmacm-devel ibacm-devel openssl-devel libuuid-devel expatdevel infinipath-psm-devel valgrind-devel libgnome libibverbs* opensm-libs libhfi1 papi ncurses-devel hwloc hwloc-gui
接着安装Intel® Omni-Path Software并重启机器
#yum install -y opa-basic-tools # reboot 确认Host Fabric Interfaces (HFIs)驱动hfi1安装并装载 # modprobe hfi1 $ lsmod | grep hfi1
3. 配置 IPoIB IPV4
vi /etc/sysconfig/network-scripts/ifcfg-ib0 DEVICE=ib0
BOOTPROTO=static
IPADDR=10.4.204.173 BROADCAST=10.4.255.255
NETWORK=10.4.0.0
NETMASK=255.255.0.0
ONBOOT=yes
CONNECTED_MODE=yes
MTU=
4. 安装OPA FM
yum install –y opa-fastfabric opa-address-resolution opa-fm # systemctl start opafm
5. 启动IPoIB接口
# ifup ib0
Verify that RDMA is working
Verify that RDMA kernel part is loaded
[root@jfz1r04h19 z1r04h19]# lsmod |grep ib
ib_isert
iscsi_target_mod ib_isert
ib_iser
libiscsi ib_iser
scsi_transport_iscsi ib_iser,libiscsi
ib_srpt
target_core_mod iscsi_target_mod,ib_srpt,ib_isert
ib_srp
scsi_transport_srp ib_srp
ib_ipoib
ib_ucm
ib_uverbs ib_ucm,rdma_ucm
ib_umad
rdma_cm rpcrdma,ib_iser,rdma_ucm,ib_isert
ib_cm rdma_cm,ib_srp,ib_ucm,ib_srpt,ib_ipoib
ib_core hfi1,rdma_cm,i40iw,ib_cm,iw_cm,rpcrdma,ib_srp,ib_ucm,rdmavt,ib_iser,ib_srpt,ib_umad,ib_uverbs,rdma_ucm,ib_ipoib,ib_isert
Verify that RDMA devices are available
[root@jfz1r04h19 z1r04h19]# ibv_devices
device node GUID
------ ----------------
i40iw1 a4bf014ddd2c0000
i40iw0 a4bf014ddd2b0000
hfi1_0 001175010172feb8
Verify that RDMA devices can be accessed
[root@jfz1r04h19 z1r04h19]# ibv_devinfo -d hfi1_0
hca_id: hfi1_0
transport: InfiniBand ()
fw_ver: 0.0.
node_guid: :::feb8
sys_image_guid: :::feb8
vendor_id: 0x1175
vendor_part_id:
hw_ver: 0x11
board_id: Intel Omni-Path Host Fabric Interface Adapter Series
phys_port_cnt:
port:
state: PORT_ACTIVE ()
max_mtu: ()
active_mtu: ()
sm_lid:
port_lid:
port_lmc: 0x00
link_layer: InfiniBand
PORT_ACTIVE is
Send traffic using ibv_*_pingpong
Server side:
[z1r04h18@jfz1r04h18 ~]$ ibv_ud_pingpong -g -d hfi1_0 -i
Client side: [root@jfz1r04h19 z1r04h19]# ibv_ud_pingpong -g -d hfi1_0 -i 192.168.200.118
local address: LID 0x0001, QPN 0x000062, PSN 0xafa045: GID fe80:::::feb8
remote address: LID 0x0005, QPN 0x0000d4, PSN 0xdf6b42, GID fe80:::::f1a6
bytes in 0.01 seconds = 2217.65 Mbit/sec
iters in 0.01 seconds = 14.78 usec/iter
Send traffic using rping
Yum install –y librdmacm-utils
Server side:
[z1r04h18@jfz1r04h18 ~]$ rping -s -a 192.168.200.118 -v
Client side:
[root@jfz1r04h19 z1r04h19]# rping -c -a 192.168.200.118 -v
IPoIB over OPA调优
Transparent Huge Pages
$ cat /sys/kernel/mm/transparent_hugepage/enabled
[always] madvise never
Do Not Enable intel_iommu
[root@jfz1r04h19 z1r04h19]# cat /etc/default/grub GRUB_TIMEOUT= GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)" GRUB_DEFAULT=saved GRUB_DISABLE_SUBMENU=true GRUB_TERMINAL_OUTPUT="console" GRUB_CMDLINE_LINUX="crashkernel=auto rd.lvm.lv=centos/root rd.lvm.lv=centos/swap rhgb quiet" GRUB_DISABLE_RECOVERY="true"
HFI1 Driver Module Parameters
显示驱动参数
for x in /sys/module/hfi1/parameters/*; do echo "$(basename $x) " $(cat $x); done aspm 0 cache_size 256 cap_mask 0x4c09a00cb9a cu 1 desct_intr 64 eager_buffer_size 2097152 hdrq_entsize 32 kdeth_qp 128 krcvqs link_crc_mask 3 lkey_table_size 16 loopback 0 max_ahs 65535 max_cqes 3145727 max_cqs 131071 max_mcast_grps 16384 max_mcast_qp_attached 16 max_mtu 10240 max_pds 65535 max_qps 32768 max_qp_wrs 16383 max_sges 96 max_srqs 1024 max_srq_sges 128 max_srq_wrs 131071 num_sdma 0 num_user_contexts 36 num_vls 8 pcie_caps 0 pcie_ctle 1 pcie_force 0 pcie_pset 2 pcie_retry 5 pcie_target 3 piothreshold 256 qp_table_size 256 rcvarr_split 25 rcvhdrcnt 2048 rcv_intr_count 16 rcv_intr_timeout 840 sdma_comp_size 128 sdma_descq_cnt 2048 sdma_idle_cnt 250 sge_copy_mode 0 user_credit_return_threshold 33 wss_clean_period 256 wss_threshold 80
7.0 Verbs Benchmarks
8.0 IPoFabric Performance
OPA 实现的是 IP over Fabric or IPoFabric，从使用的角度也是IPoIB,而且用的是 ib_ipoib驱动
设置8K MTU
Cat /etc/sysconfig/network-scripts/ifcfg-ib0 ONBOOT=yes
NM_CONTROLLED=no
MTU=
CONNECTED_MODE=yes
IPoFabric Datagram Mode Configuration
一般Connected Mode性能最好
[root@jfz1r04h19 z1r04h19]# cat /sys/class/net/ib0/mode connected
TCP Parameter Tuning for IPoFabric Performance
一般不需要，如果内存充足的话可以设置一下，性能提高10%:
sudo sysctl -w net.ipv4.tcp_rmem="16384 349520 16777216"
sudo sysctl -w net.ipv4.tcp_wmem="16384 349520 16777216"
sudo sysctl -w net.core.rmem_max=
sudo sysctl -w net.core.wmem_max= sudo sysctl -w net.core.somaxconn=
sudo sysctl -w net.ipv4.tcp_mtu_probing=
sudo sysctl -w net.core.netdev_max_backlog=
实际
[z1r04h19@jfz1r04h19 yuntong]$ iperf3 -c 192.168.200.118
性能在一分钟之内下降
35.8 33.1 24.2 23.0
测试IPoIB over OPA(Omin-Path Architecture)
TCP模式带宽为25G：
[z1r04h19@jfz1r04h19 ~]$ iperf3 -c 192.168.200.118 Connecting to host 192.168.200.118, port [ ] local 192.168.200.49 port connected to 192.168.200.118 port [ ID] Interval Transfer Bandwidth Retr Cwnd - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bandwidth Retr [ ] 0.00-10.00 sec 29.3 GBytes 25.1 Gbits/sec sender [ ] 0.00-10.00 sec 29.3 GBytes 25.1 Gbits/sec receiver
一共72个core，IPoIB CPU占用率很小
UDP模式带宽与TCP一样为25G：
[z1r04h19@jfz1r04h19 ~]$ iperf3 -u -c 192.168.200.118 Connecting to host 192.168.200.118, port - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bandwidth Jitter Lost/Total Datagrams [ ] 0.00-10.00 sec 1.25 MBytes 1.05 Mbits/sec 0.016 ms / (%)
只有1G, 原因是：
-b,--bandwidth #[KMG][/#] target bandwidth in bits/sec (0 for unlimited)
(default 1 Mbit/secfor UDP, unlimited for TCP)
(optional slash andpacket count for burst mode)
UDP目标带宽设置为40G
[z1r04h19@jfz1r04h19 ~]$ iperf3 -u -c 192.168.200.118 -b 40G Connecting to host 192.168.200.118, port [ ] local 192.168.200.49 port connected to 192.168.200.118 port [ ID] Interval Transfer Bandwidth Total Datagrams - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bandwidth Jitter Lost/Total Datagrams [ ] 0.00-10.00 sec 27.9 GBytes 24.0 Gbits/sec 0.003 ms / (%) [ ] Sent datagrams
length of buffer默认为128K,设置为1M,比起默认的带宽25G有提升:
-l, --len #[KMG] length of buffer to read or write
(default 128 KB for TCP, dynamic or 1 for UDP)
[z1r04h19@jfz1r04h19 ~]$ iperf3 -c 192.168.200.118 -l 1M Connecting to host 192.168.200.118, port [ ] local 192.168.200.49 port connected to 192.168.200.118 port - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bandwidth Retr [ ] 0.00-10.00 sec 32.1 GBytes 27.5 Gbits/sec sender [ ] 0.00-10.00 sec 32.1 GBytes 27.5 Gbits/sec receiver
多线程性能没有提升：
-P,--parallel # number of parallel client streams torun
[z1r04h19@jfz1r04h19 ~]$ iperf3 -c 192.168.200.118 -P [SUM] 0.00-10.00 sec 28.8 GBytes 24.7 Gbits/sec sender [SUM] 0.00-10.00 sec 28.8 GBytes 24.7 Gbits/sec receiver
使用zerocopy 发送，没有任何提升
-Z,--zerocopy use a 'zero copy'method of sending data
[z1r04h19@jfz1r04h19 ~]$ iperf3 -c 192.168.200.118 -Z - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bandwidth Retr [ ] 0.00-10.00 sec 27.3 GBytes 23.4 Gbits/sec sender [ ] 0.00-10.00 sec 27.3 GBytes 23.4 Gbits/sec receiver
CPU affinity可达46G
-A, --affinity n/n,m
Set the CPU affinity, if possible (Linux and FreeBSD only). On both the client and server you can set the local affinity by using the n form of this argument (where n is a CPU number). In addition, on the client side you can override the server's affinity for just that one test, using the n,m form of argument. Note that when using this feature, a process will only be bound to a single CPU (as opposed to a set containing potentialy multiple CPUs).
[root@jfz1r04h19 z1r04h19]# iperf3 -c 192.168.200.118 -A
[ ID] Interval Transfer Bandwidth Retr
[ ] 0.00-10.00 sec 54.2 GBytes 46.6 Gbits/sec sender
尝试不同 -A 参数 当-A 4效果最好：
[root@jfz1r04h19 z1r04h19]# iperf3 -c 192.168.200.118 -A
[ ] 8.00-8.57 sec 1.78 GBytes 26.6 Gbits/sec 2.50 MBytes [root@jfz1r04h19 z1r04h19]# iperf3 -c 192.168.200.118 -A
[ ID] Interval Transfer Bandwidth Retr
[ ] 0.00-10.00 sec 54.2 GBytes 46.6 Gbits/sec sender [root@jfz1r04h19 z1r04h19]# iperf3 -c 192.168.200.118 -A
[ ] 0.00-10.00 sec 31.0 GBytes 26.6 Gbits/sec sender
[ ] 0.00-10.00 sec 31.0 GBytes 26.6 Gbits/sec receiver
延迟测试
[root@jfz1r04h19 z1r04h19]# ib_send_lat -a -c UD -d hfi1_0 -i 192.168.200.118
Max msg size in UD is MTU
Changing to this MTU
---------------------------------------------------------------------------------------
Send Latency Test
Dual-port : OFF Device : hfi1_0
Number of qps : Transport type : IB
Connection type : UD Using SRQ : OFF
TX depth :
Mtu : [B]
Link type : IB
Max inline data : [B]
rdma_cm QPs : OFF
Data ex. method : Ethernet
---------------------------------------------------------------------------------------
local address: LID 0x01 QPN 0x0078 PSN 0xa16791
remote address: LID 0x05 QPN 0x00ea PSN 0xf8cb30
---------------------------------------------------------------------------------------
#bytes #iterations t_min[usec] t_max[usec] t_typical[usec] t_avg[usec] t_stdev[usec] % percentile[usec] 99.9% percentile[usec]
4.52 23.20 4.64 4.66 0.26 5.26 23.20
4.44 22.25 4.55 4.59 0.47 4.90 22.25
4.44 5.56 4.56 4.56 0.08 4.73 5.56
4.43 5.35 4.53 4.54 0.07 4.96 5.35
4.40 7.54 4.54 4.55 0.10 5.07 7.54
4.46 6.12 4.56 4.56 0.06 4.74 6.12
4.47 12.56 4.59 4.61 0.39 4.74 12.56
4.52 12.62 4.64 4.68 0.46 5.25 12.62
4.58 6.01 4.70 4.71 0.07 4.91 6.01
4.75 7.32 4.87 4.89 0.08 5.37 7.32
4.96 6.01 5.11 5.12 0.08 5.34 6.01
5.47 7.24 5.64 5.65 0.09 5.89 7.24
---------------------------------------------------------------------------------------
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