Cannot achieve maximum bandwidth on link.

Questions related to general functionality
Post Reply
AbduSami
Posts: 4
Joined: 03 May 2018, 05:46

Cannot achieve maximum bandwidth on link.

Post by AbduSami » 27 Jun 2018, 08:03

We are connecting our accel machine (accel-ppp-1.10.3), deployed on an ubuntu VM (16.04), to a rp-client setup on another server. The link between the two servers is 10G and we have verified it by running iperf.
When we establish the PPPoE connection between rp-client and Accel the bandwidth decreases to 2 Gbps. Even if we increase the bandwidth assigned to a client or increase the number of clients, the total bandwidth on the link does not increase more than 2 Gbps. What could be the problem for this bandwidth issue using pppoe protocol?

dimka88
Posts: 409
Joined: 13 Oct 2014, 05:51
Contact:

Re: Cannot achieve maximum bandwidth on link.

Post by dimka88 » 27 Jun 2018, 10:00

Hi, do you use RPS, RFS, balance irq?

AbduSami
Posts: 4
Joined: 03 May 2018, 05:46

Re: Cannot achieve maximum bandwidth on link.

Post by AbduSami » 29 Jun 2018, 05:49

No we are not using RPS, RFS or balance IRQ. This should not be a problem when using a single client for generating traffic.
We also increased the size of the interface queue from 3 to 1,000 to no effect.

dimka88
Posts: 409
Joined: 13 Oct 2014, 05:51
Contact:

Re: Cannot achieve maximum bandwidth on link.

Post by dimka88 » 29 Jun 2018, 12:15

Ok, please show "top" and ethtool -S eth1 on bandwidth test.
ps:// change eth1 to used network interface

AbduSami
Posts: 4
Joined: 03 May 2018, 05:46

Re: Cannot achieve maximum bandwidth on link.

Post by AbduSami » 02 Jul 2018, 08:36

'ethtool -S ppp0' is not detecting the interface made through pppoe connection.

AbduSami
Posts: 4
Joined: 03 May 2018, 05:46

Re: Cannot achieve maximum bandwidth on link.

Post by AbduSami » 02 Jul 2018, 09:29

Is there a limit of PPPoE protocol at 1Gbps bandwidth?

Dmitry
Администратор
Posts: 949
Joined: 09 Oct 2014, 10:06

Re: Cannot achieve maximum bandwidth on link.

Post by Dmitry » 05 Jul 2018, 03:47

unlikely, there is no any limits

Post Reply

Who is online

Users browsing this forum: No registered users and 0 guests