* [dpdk-dev] does vswitchd runs multiple threads when i added dpdk devices
@ 2014-07-28 7:33 Srinivas Reddi
[not found] ` <20140728161448.GA6127@nicira.com>
0 siblings, 1 reply; 2+ messages in thread
From: Srinivas Reddi @ 2014-07-28 7:33 UTC (permalink / raw)
To: discuss; +Cc: dev
Hi,
I have taken the code form
https://github.com/openvswitch/ovs
I have added two dpdk devices
ovs-vsctl add-port br0 dpdk0 -- set Interface dpdk0 type=dpdk
ovs-vsctl add-port br0 dpdk1 -- set Interface dpdk1 type=dpdk
https://github.com/openvswitch/ovs/blob/master/INSTALL.DPDK
In the above link it is mentioned as " [ Once first DPDK port is added to vswitchd, it creates a Polling thread and
polls dpdk device in continuous loop. Therefore CPU utilization
for that thread is always 100%. ] "
As per my understanding each dpdk device is polled on different thread .
But in my case vswithcd is running in only single thread [on core 0] , I expected to run on 3 cores ..
One thing I want to clarify that .. does ovs-vswitchd runs on single core only .. or multiple thereads .. when I added dpdk devices .
If vswitchd runs on multiple threads , when I added dpdk devices .. pls let me know how can I run .
Thanks,
Srinivas.
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^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [dpdk-dev] [ovs-discuss] does vswitchd runs multiple threads when i added dpdk devices
[not found] ` <20140728161448.GA6127@nicira.com>
@ 2014-07-28 18:02 ` Alex Wang
0 siblings, 0 replies; 2+ messages in thread
From: Alex Wang @ 2014-07-28 18:02 UTC (permalink / raw)
To: Ben Pfaff; +Cc: dev, discuss
Hey Srinivas,
Right now, ovs has only one dpdk polling thread. We are working on
creating multiple polling threads and pinning polling threads to the same
cpu socket as dpdk interface.
Thanks,
Alex Wang,
On Mon, Jul 28, 2014 at 9:15 AM, Ben Pfaff <blp@nicira.com> wrote:
> On Mon, Jul 28, 2014 at 07:33:35AM +0000, Srinivas Reddi wrote:
> > As per my understanding each dpdk device is polled on different thread
> .
> > But in my case vswithcd is running in only single thread [on core 0] ,
> I expected to run on 3 cores ..
> >
> > One thing I want to clarify that .. does ovs-vswitchd runs on single
> core only .. or multiple thereads .. when I added dpdk devices .
> > If vswitchd runs on multiple threads , when I added dpdk devices .. pls
> let me know how can I run .
>
> It looks like right now OVS has only one dpdk polling thread.
> _______________________________________________
> discuss mailing list
> discuss@openvswitch.org
> http://openvswitch.org/mailman/listinfo/discuss
>
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2014-07-28 7:33 [dpdk-dev] does vswitchd runs multiple threads when i added dpdk devices Srinivas Reddi
[not found] ` <20140728161448.GA6127@nicira.com>
2014-07-28 18:02 ` [dpdk-dev] [ovs-discuss] " Alex Wang
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