| *SOLVED* Slow Network [message #14899] |
Thu, 12 July 2007 17:54  |
moorejon
Messages: 4
Registered: July 2007
|
Junior Member |
|
|
I am attempting to setup a HA cluster using OpenVZ and the guide posted in the wiki. During the process we noticed extremely slow network connections even from the host OS. iperf to another server on the same 100 mbps LAN reports
[ ~]# iperf -c ##############
------------------------------------------------------------
Client connecting to ##############, TCP port 5001
TCP window size: 16.0 KByte (default)
------------------------------------------------------------
[ 3] local ########### port 39098 connected with ####### port 5001
[ 3] 0.0-10.2 sec 3.72 MBytes 3.05 Mbits/sec
Servers with the identical hardware on the same subnet running CentOS 4.x 64 bit report around 96 Mbps
Inside a VE we get the same or lower iperf results, so I am assuming this is an issue with the host OS rather than VE configuration options.
I have two test setups that provide the same results. One is CentOS 4.3 64 bit with kernel:
cat /proc/version
Linux version 2.6.18-8.1.4.el5.028stab035.1 (root@rhel5-64-build) (gcc version 4.1.1 20070105 (Red Hat 4.1.1-52)) #1 SMP Fri Jun 8 21:14:18 MSD 2007
The other is CentOS 4.5 32bit (couldn't get 4.3 32 bit to work with our kickstart network installer) kernel:
Linux version 2.6.18-8.1.4.el5.028stab035.1PAE (root@rhel5-32-build) (gcc version 4.1.1 20061011 (Red Hat 4.1.1-30)) #1 SMP Sat Jun 9 02:27:12 MSD 2007
Server hardware is Supermicro 1U, 2 x dual core Woodcrest 5110, 2 GB RAM, 2 x SATA 250 GB SATA drives, 2 x Intel(R) PRO/1000 Network
Any ideas what would cause this issue?
[Updated on: Fri, 13 July 2007 06:32] by Moderator Report message to a moderator |
|
|
|
OpenVZ Forum
Members
Search
Help
Register
Login
Home
