Drop in Network Performance when Reading from a Bare Metal Platform to a DomU
(Doc ID 1316948.1)
Last updated on MAY 27, 2020
Applies to:
Oracle VM - Version 2.2.1 to 2.2.2 [Release OVM221 to OVM222]Oracle Cloud Infrastructure - Version N/A and later
Linux x86-64
Symptoms
Significant drop in network performance when reading from a BareMetal Platform to a DomU (virtual Machine).
This can be tested/confirmed by running iperf, to learn and get iperf refer to Knowledge Document 1507397.1
# iperf -c {IPerf SERVER HOSTNAME} -t 60 -d
For example:
[root@localhost ~]# iperf -c 131.xxx.xx.43 -t 60 -d
------------------------------------------------------------
Server listening on TCP port 5001
TCP window size: 85.3 KByte (default)
------------------------------------------------------------
------------------------------------------------------------
Client connecting to 131.xxx.xx.xx, TCP port 5001
TCP window size: 16.0 KByte (default)
------------------------------------------------------------
[ 5] local 131.225.67.59 port 44923 connected with 131.xxx.xx.xx port 5001
[ 4] local 131.225.67.59 port 5001 connected with 131.xxx.xx.xx port 42140
[ ID] Interval Transfer Bandwidth
[ 5] 0.0-60.0 sec 6.58 GBytes 941 Mbits/sec
[ ID] Interval Transfer Bandwidth
[ 4] 0.0-60.0 sec 158 MBytes 22.1 Mbits/sec << VALUE SHOWS PERFORMANCE DROP>>>
------------------------------------------------------------
Server listening on TCP port 5001
TCP window size: 85.3 KByte (default)
------------------------------------------------------------
------------------------------------------------------------
Client connecting to 131.xxx.xx.xx, TCP port 5001
TCP window size: 16.0 KByte (default)
------------------------------------------------------------
[ 5] local 131.225.67.59 port 44923 connected with 131.xxx.xx.xx port 5001
[ 4] local 131.225.67.59 port 5001 connected with 131.xxx.xx.xx port 42140
[ ID] Interval Transfer Bandwidth
[ 5] 0.0-60.0 sec 6.58 GBytes 941 Mbits/sec
[ ID] Interval Transfer Bandwidth
[ 4] 0.0-60.0 sec 158 MBytes 22.1 Mbits/sec << VALUE SHOWS PERFORMANCE DROP>>>
Changes
Cause
To view full details, sign in with your My Oracle Support account. |
|
Don't have a My Oracle Support account? Click to get started! |
In this Document
Symptoms |
Changes |
Cause |
Solution |