Poor NFS/Network IO Performance When Using Bonding in mode=4 or 802.3ad (Doc ID 1636393.1)

Last updated on APRIL 19, 2016

Applies to:

Linux OS - Version Oracle Linux 5.9 with Unbreakable Enterprise Kernel [2.6.39] and later
Information in this document applies to any platform.

Symptoms

The NFS or Network performance is really bad when bonding is in mode=4 even though the NIC is of 10Gb or 1Gb.

Getting a constant throughput of a around 100Mb - 200Mb on a running a "dd(1)" command to a NFS mount point even though , installed with 2 x 10Gb NICS in a LACP mode (mode=4) bond and also the

scenario is same when using 4 x 1Gb bonded LACP.

root@oratest # time dd if=/dev/zero of=/u02/order/data/64gbtestfile bs=16k count=4194304
4194304+0 records in
4194304+0 records out
68719476736 bytes (69 GB) copied, 680.886 seconds, 101 MB/s

real    11m20.905s
user    0m2.795s
sys     3m29.425s

  

Cause

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