2012/5/30 Eric Dumazet [off-list ref]:
On Wed, 2012-05-30 at 08:28 +0200, Jean-Michel Hautbois wrote:
quoted
If this can help, setting tx queue length to 5000 seems to make the
problem disappear.
Then you should have drops at Qdisc layer (before your change to 5000)
tc -s -d qdisc
quoted
I didn't specified it : MTU is 4096, UDP packets are 4000 bytes.
Yes :
qdisc mq 0: dev eth1 root
Sent 5710049154383 bytes 1413544639 pkt (dropped 73078, overlimits 0
requeues 281540)
backlog 0b 0p requeues 281540
Why ? With a 2.6.26 kernel it works well with a tx queue length of 1000.