[DragonFlyBSD - Bug #2429] Abnormally low NFS/TCP 10Gb/s performance with Linux clients

[Francois Tigeot via Redmine <bugtracker-admin@xxxxxxxxxxxxxxxxxxxxx>]

Issue #2429 has been reported by Francois Tigeot.

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Bug #2429: Abnormally low NFS/TCP 10Gb/s performance with Linux clients
http://bugs.dragonflybsd.org/issues/2429

Author: Francois Tigeot
Status: New
Priority: High
Assignee: 
Category: 
Target version: 


Setup:
- two Xeon boxes
- one Intel X520 10G-base-T NIC (ixgbe driver) in each box
- a single CAT6 cable to link them
- DragonFly-3.1 server
- Linux kernel 2.6.32 client

NFS/TCP file transfer performance only reaches 450 KB/s top

The same Linux client machine is able to read files at a speed of 110 MB/s using
regular Gigabit network interfaces (bce and em drivers)




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