enhance sctp performance (a_rwnd problem)

curiousguy · 03-13-2012, 03:48 AM

I am trying to increase the throughput over sctp but the problem is that a_rwnd in SACK of sctp goes to zero after 15-20min...

am sending traffic at 60000packets per sec and packet size is around 500-600 bytes.

after so many changes I have configured my server with following parameter in sysctl.conf

net.sctp.sctp_rmem = 12582912 87380 12582912
net.sctp.sctp_wmem = 12582912 16384 12582912
net.core.netdev_max_backlog = 100000

kindly help....

prafull.prashant · 03-14-2012, 06:28 AM

Hi All,

I am facing similar issues wherein receive credit window falls to zero after a while.

I am running the client and server on two linux boxes (Linux 2.6.32-131.0.15.el6.x86_64 #1 SMP x86_64 x86_64 x86_64 GNU/Linux)

Data on ethernet is almost 80 MB/S on 1G supported network.

Kindly help me in configuring kernel parameters.