[dpdk-dev] Poor Virtio PMD TX Performance

2015-06-15 Thread Zhou, Tianlin
redhat.com] Sent: Friday, June 12, 2015 5:46 PM To: Zhou, Tianlin; dev at dpdk.org; Ouyang, Changchun Subject: Re: [dpdk-dev] Poor Virtio PMD TX Performance On 06/12/2015 05:35 PM, Zhou, Tianlin wrote: > Hi Changchun, > > Thanks for your response. > Please see my embedded comments.

[dpdk-dev] Poor Virtio PMD TX Performance

2015-06-12 Thread Jason Wang
> Changchun > > >> -Original Message- >> From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of Zhou, Tianlin >> Sent: Friday, June 5, 2015 5:23 PM >> To: dev at dpdk.org >> Subject: [dpdk-dev] Poor Virtio PMD TX Performance >> >> Hi the

[dpdk-dev] Poor Virtio PMD TX Performance

2015-06-12 Thread Ouyang, Changchun
> -Original Message- > > From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of Zhou, Tianlin > > Sent: Friday, June 5, 2015 5:23 PM > > To: dev at dpdk.org > > Subject: [dpdk-dev] Poor Virtio PMD TX Performance > > > > Hi there, > > > >

[dpdk-dev] Poor Virtio PMD TX Performance

2015-06-12 Thread Zhou, Tianlin
m: dev [mailto:dev-bounces at dpdk.org] On Behalf Of Zhou, Tianlin > Sent: Friday, June 5, 2015 5:23 PM > To: dev at dpdk.org > Subject: [dpdk-dev] Poor Virtio PMD TX Performance > > Hi there, > > We tested TX performance of Virtio PMD by DPDK l2fwd, but found even > at 60KPP

[dpdk-dev] Poor Virtio PMD TX Performance

2015-06-05 Thread Zhou, Tianlin
Hi there, We tested TX performance of Virtio PMD by DPDK l2fwd, but found even at 60KPPS (720B packet length) TX rate, there is 1/1000 packet dropping rate. The log shows "No free tx descriptors to transmit" in Virtio PMD. Increasing TX queues by modifying DPDK l2fwd can decreases packet dropping