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Re: it's normal speed?

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Hi Sophie,

1. OS - linux gentoo, i have 'ofed" in the repository (

sys-infiniband/ofed-3.12_rc1:3.12  USE="dapl diags ibacm mstflint opensm perftest qperf -rds -srp" OFED_DRIVERS="mlx4 -cxgb3 -cxgb4 (-ehca) -ipath -mlx5 -mthca -nes -ocrdma -psm" 0 KiB

 

2. Bios settings (C States - off, Hyper - Threading - enabled)

    OS tuning

 

#!/bin/sh

for cf in /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor;

do

echo performance > $cf;

done

 

echo 1000000000 > /proc/sys/kernel/shmmax

echo 400 > /proc/sys/vm/nr_hugepages

sysctl -w net.ipv4.tcp_timestamps=0

sysctl -w net.ipv4.tcp_sack=1

sysctl -w net.core.netdev_max_backlog=250000

sysctl -w net.core.rmem_max=4194304

sysctl -w net.core.wmem_max=4194304

sysctl -w net.core.rmem_default=4194304

sysctl -w net.core.wmem_default=4194304

sysctl -w net.core.optmem_max=4194304

sysctl -w net.ipv4.tcp_rmem="4096 87380 4194304"

sysctl -w net.ipv4.tcp_wmem="4096 65536 4194304"

sysctl -w net.ipv4.tcp_low_latency=1

 

NUMA - not support my CPU

 

3. All adaptersinstalledinPCIE GEN2x8

4. test speed

RDMA_Write BW Test

Dual-port       : OFF        Device         : mlx4_0

Number of qps   : 1        Transport type : IB

Connection type : RC        Using SRQ      : OFF

CQ Moderation   : 100

Mtu             : 4096[B]

Link type       : IB

Max inline data : 0[B]

rdma_cm QPs     : OFF

Data ex. method : Ethernet

---------------------------------------------------------------------------------------

---------------------------------------------------------------------------------------

#bytes     #iterations    BW peak[Gb/sec]    BW average[Gb/sec]   MsgRate[Mpps]

8388608    5000           13.72              13.72             0.000204

---------------------------------------------------------------------------------------

 

qperf 10.0.0.1 rc_bw

rc_bw:

    bw  =  1.71 GB/sec

 

It was better but there is no40gb

 

ps. Version ofed -

OFED_VER="3.12"

OFED_RC="1"

OFED_RC_VER="1"

OFED_SUFFIX="1.g8336567"

 

 


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