CentOS 7.9 degradation network

Issues related to hardware problems
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Joined: 2021/11/25 10:33:56

CentOS 7.9 degradation network

Post by lizzethq » 2021/11/25 10:59:08


We are experiencing performance degradation related to the network in our environment.
Production Environment
Cloud Provider: Oracle Cloud Infrastructure
CentOS Image:

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[root@oci-bi-msprois-02 ~]# cat /etc/centos-release
CentOS Linux release 7.9.2009 (Core)
Kernel version

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Linux oci-bi-msprois-02 3.10.0-1160.11.1.el7.x86_64 #1 SMP Fri Dec 18 16:34:56 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
Driver Network card:

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[root@oci-bi-msprois-02-copy ~]# lspci | grep -i mel
41:00.0 Ethernet controller: Mellanox Technologies MT28800 Family [ConnectX-5 Ex]
41:00.1 Ethernet controller: Mellanox Technologies MT28800 Family [ConnectX-5 Ex]
# lshw -class network -businfo
Bus info          Device     Class          Description
pci@0000:41:00.0  enp65s0f0  network        MT28800 Family [ConnectX-5 Ex]
pci@0000:41:00.1  enp65s0f1  network        MT28800 Family [ConnectX-5 Ex]

# ethtool -i enp65s0f0
driver: mlx5_core
version: 5.0-0
firmware-version: 16.26.1502 (ORC0000000003)
bus-info: 0000:41:00.0
supports-statistics: yes
supports-test: yes
supports-eeprom-access: no
supports-register-dump: no
supports-priv-flags: yes
Driver scsci:

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[root@oci-bi-msprois-02 ~]# rpm -qa | grep iscsi-ini
The performance degradation is from 16GB/s to 2GB/s, Do you know any bugs related to this?

Can you help us?


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Re: CentOS 7.9 degradation network

Post by TrevorH » 2021/11/25 11:59:39

Start by running yum update to get all the latest updates and see if the problem is already fixed. The current CentOS 7 kernel is 3.10.0-1160.49.1.el7 so your running one is quite out of date.
CentOS 8 died a premature death at the end of 2021 - migrate to Rocky/Alma/OEL/Springdale ASAP.
Info for USB installs on http://wiki.centos.org/HowTos/InstallFromUSBkey
CentOS 5 and 6 are dead, do not use them.
Use the FAQ Luke

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