linux version : Linux 2.6.32-279.el6.x86_64(CentOS 6.3 64bit)
Mellanox OFED Version : MLNX_OFED_LINUX-1.9-0.1.8-rhel6.3-x86_64
VMA Version : libvma-6.3.28-0-x86_64.rpm
HCA Card : MCX312A-XCBT
# ethtool -i p5p1driver: mlx4_en (MT_1080120023_CX-3)version: 1.5.10 (Jan 2013)firmware-version: 2.10.700bus-info: 0000:04:00.0
# ethtool -i p5p1driver: mlx4_en (MT_1080120023_CX-3)version: 1.5.10 (Jan 2013)firmware-version: 2.10.800bus-info: 0000:04:00.0
My customer was using Mellanox 10G Ethernet Cards.
The Mellanox 10G Card did not have a consistent ping time(11us~38us --> inconsistant).
but another card(solarflare,chelsio...) had a consistent ping time(13~15us --> consistant).
They has a very sensitive network issue and speed.
is there a way to resole this issue?
4 bytes from 10.154.136.10: icmp_seq=2 ttl=64 time=0.021 ms
64 bytes from 10.154.136.10: icmp_seq=3 ttl=64 time=0.026 ms
64 bytes from 10.154.136.10: icmp_seq=4 ttl=64 time=0.018 ms
64 bytes from 10.154.136.10: icmp_seq=5 ttl=64 time=0.011 ms
64 bytes from 10.154.136.10: icmp_seq=6 ttl=64 time=0.011 ms
64 bytes from 10.154.136.10: icmp_seq=7 ttl=64 time=0.020 ms
64 bytes from 10.154.136.10: icmp_seq=8 ttl=64 time=0.018 ms
64 bytes from 10.154.136.10: icmp_seq=9 ttl=64 time=0.012 ms
64 bytes from 10.154.136.10: icmp_seq=10 ttl=64 time=0.020 ms
64 bytes from 10.154.136.10: icmp_seq=11 ttl=64 time=0.013 ms
64 bytes from 10.154.136.10: icmp_seq=12 ttl=64 time=0.012 ms
64 bytes from 10.154.136.10: icmp_seq=13 ttl=64 time=0.014 ms
64 bytes from 10.154.136.10: icmp_seq=14 ttl=64 time=0.013 ms
64 bytes from 10.154.136.10: icmp_seq=15 ttl=64 time=0.019 ms
64 bytes from 10.154.136.10: icmp_seq=16 ttl=64 time=0.013 ms
64 bytes from 10.154.136.10: icmp_seq=17 ttl=64 time=0.013 ms
64 bytes from 10.154.136.10: icmp_seq=18 ttl=64 time=0.044 ms
64 bytes from 10.154.136.10: icmp_seq=19 ttl=64 time=0.019 ms
64 bytes from 10.154.136.10: icmp_seq=20 ttl=64 time=0.013 ms
64 bytes from 10.154.136.10: icmp_seq=21 ttl=64 time=0.013 ms
64 bytes from 10.154.136.10: icmp_seq=22 ttl=64 time=0.020 ms
64 bytes from 10.154.136.10: icmp_seq=23 ttl=64 time=0.012 ms
64 bytes from 10.154.136.10: icmp_seq=24 ttl=64 time=0.012 ms
64 bytes from 10.154.136.10: icmp_seq=25 ttl=64 time=0.011 ms
64 bytes from 10.154.136.10: icmp_seq=26 ttl=64 time=0.012 ms
64 bytes from 10.154.136.10: icmp_seq=27 ttl=64 time=0.020 ms
64 bytes from 10.154.136.10: icmp_seq=28 ttl=64 time=0.011 ms
64 bytes from 10.154.136.10: icmp_seq=29 ttl=64 time=0.012 ms
64 bytes from 10.154.136.10: icmp_seq=30 ttl=64 time=0.020 ms
64 bytes from 10.154.136.10: icmp_seq=31 ttl=64 time=0.012 ms
64 bytes from 10.154.136.10: icmp_seq=32 ttl=64 time=0.012 ms
64 bytes from 10.154.136.10: icmp_seq=33 ttl=64 time=0.018 ms
64 bytes from 10.154.136.10: icmp_seq=34 ttl=64 time=0.012 ms
64 bytes from 10.154.136.10: icmp_seq=35 ttl=64 time=0.021 ms
64 bytes from 10.154.136.10: icmp_seq=36 ttl=64 time=0.012 ms
64 bytes from 10.154.136.10: icmp_seq=37 ttl=64 time=0.014 ms
64 bytes from 10.154.136.10: icmp_seq=38 ttl=64 time=0.049 ms
64 bytes from 10.154.136.10: icmp_seq=39 ttl=64 time=0.011 ms
64 bytes from 10.154.136.10: icmp_seq=40 ttl=64 time=0.013 ms
64 bytes from 10.154.136.10: icmp_seq=41 ttl=64 time=0.011 ms
64 bytes from 10.154.136.10: icmp_seq=42 ttl=64 time=0.019 ms
64 bytes from 10.154.136.10: icmp_seq=43 ttl=64 time=0.020 ms
64 bytes from 10.154.136.10: icmp_seq=44 ttl=64 time=0.012 ms
64 bytes from 10.154.136.10: icmp_seq=45 ttl=64 time=0.021 ms
64 bytes from 10.154.136.10: icmp_seq=46 ttl=64 time=0.011 ms
64 bytes from 10.154.136.10: icmp_seq=47 ttl=64 time=0.012 ms
64 bytes from 10.154.136.10: icmp_seq=48 ttl=64 time=0.019 ms
64 bytes from 10.154.136.10: icmp_seq=49 ttl=64 time=0.021 ms
64 bytes from 10.154.136.10: icmp_seq=50 ttl=64 time=0.019 ms
64 bytes from 10.154.136.10: icmp_seq=51 ttl=64 time=0.012 ms
64 bytes from 10.154.136.10: icmp_seq=52 ttl=64 time=0.019 ms
64 bytes from 10.154.136.10: icmp_seq=53 ttl=64 time=0.019 ms
64 bytes from 10.154.136.10: icmp_seq=54 ttl=64 time=0.018 ms
64 bytes from 10.154.136.10: icmp_seq=55 ttl=64 time=0.013 ms
64 bytes from 10.154.136.10: icmp_seq=56 ttl=64 time=0.019 ms
64 bytes from 10.154.136.10: icmp_seq=57 ttl=64 time=0.019 ms
64 bytes from 10.154.136.10: icmp_seq=58 ttl=64 time=0.044 ms
64 bytes from 10.154.136.10: icmp_seq=59 ttl=64 time=0.012 ms
64 bytes from 10.154.136.10: icmp_seq=60 ttl=64 time=0.012 ms
64 bytes from 10.154.136.10: icmp_seq=61 ttl=64 time=0.019 ms
64 bytes from 10.154.136.10: icmp_seq=62 ttl=64 time=0.019 ms
64 bytes from 10.154.136.10: icmp_seq=63 ttl=64 time=0.012 ms
64 bytes from 10.154.136.10: icmp_seq=64 ttl=64 time=0.018 ms
64 bytes from 10.154.136.10: icmp_seq=65 ttl=64 time=0.020 ms
64 bytes from 10.154.136.10: icmp_seq=66 ttl=64 time=0.019 ms
64 bytes from 10.154.136.10: icmp_seq=67 ttl=64 time=0.012 ms
64 bytes from 10.154.136.10: icmp_seq=68 ttl=64 time=0.011 ms
64 bytes from 10.154.136.10: icmp_seq=69 ttl=64 time=0.018 ms
64 bytes from 10.154.136.10: icmp_seq=70 ttl=64 time=0.018 ms
64 bytes from 10.154.136.10: icmp_seq=71 ttl=64 time=0.012 ms
64 bytes from 10.154.136.10: icmp_seq=72 ttl=64 time=0.019 ms
64 bytes from 10.154.136.10: icmp_seq=73 ttl=64 time=0.011 ms
64 bytes from 10.154.136.10: icmp_seq=74 ttl=64 time=0.011 ms
64 bytes from 10.154.136.10: icmp_seq=75 ttl=64 time=0.013 ms
64 bytes from 10.154.136.10: icmp_seq=76 ttl=64 time=0.011 ms
64 bytes from 10.154.136.10: icmp_seq=77 ttl=64 time=0.012 ms
64 bytes from 10.154.136.10: icmp_seq=78 ttl=64 time=0.023 ms
64 bytes from 10.154.136.10: icmp_seq=79 ttl=64 time=0.012 ms
64 bytes from 10.154.136.10: icmp_seq=80 ttl=64 time=0.012 ms
64 bytes from 10.154.136.10: icmp_seq=81 ttl=64 time=0.012 ms
64 bytes from 10.154.136.10: icmp_seq=82 ttl=64 time=0.013 ms
64 bytes from 10.154.136.10: icmp_seq=83 ttl=64 time=0.011 ms
64 bytes from 10.154.136.10: icmp_seq=84 ttl=64 time=0.011 ms
64 bytes from 10.154.136.10: icmp_seq=85 ttl=64 time=0.013 ms
64 bytes from 10.154.136.10: icmp_seq=86 ttl=64 time=0.011 ms
64 bytes from 10.154.136.10: icmp_seq=87 ttl=64 time=0.012 ms
64 bytes from 10.154.136.10: icmp_seq=88 ttl=64 time=0.011 ms
64 bytes from 10.154.136.10: icmp_seq=89 ttl=64 time=0.011 ms
64 bytes from 10.154.136.10: icmp_seq=90 ttl=64 time=0.019 ms
64 bytes from 10.154.136.10: icmp_seq=91 ttl=64 time=0.012 ms
64 bytes from 10.154.136.10: icmp_seq=92 ttl=64 time=0.012 ms
64 bytes from 10.154.136.10: icmp_seq=93 ttl=64 time=0.011 ms
64 bytes from 10.154.136.10: icmp_seq=94 ttl=64 time=0.018 ms
64 bytes from 10.154.136.10: icmp_seq=95 ttl=64 time=0.013 ms
64 bytes from 10.154.136.10: icmp_seq=96 ttl=64 time=0.011 ms
64 bytes from 10.154.136.10: icmp_seq=97 ttl=64 time=0.021 ms
64 bytes from 10.154.136.10: icmp_seq=98 ttl=64 time=0.038 ms
64 bytes from 10.154.136.10: icmp_seq=99 ttl=64 time=0.012 ms
64 bytes from 10.154.136.10: icmp_seq=100 ttl=64 time=0.019 ms