Re: [dpdk-dev] IXGBE RX packet loss with 5+ cores

2018-10-31 Thread Saber Rezvani
According to the problem to this thread --> http://mails.dpdk.org/archives/dev/2015-October/024966.html  Venkatesan, Venky mentioned the following reason: To add a little more detail - this ends up being both a bandwidth and a transaction bottleneck. Not only do you add an increased transactio

[dpdk-dev] IXGBE RX packet loss with 5+ cores

2015-10-14 Thread Bruce Richardson
On Tue, Oct 13, 2015 at 01:24:22PM -0700, Alexander Duyck wrote: > On 10/13/2015 07:47 AM, Sanford, Robert wrote: > [Robert:] > 1. The 82599 device supports up to 128 queues. Why do we see trouble > with as few as 5 queues? What could limit the system (and one port > controlled by 5

[dpdk-dev] IXGBE RX packet loss with 5+ cores

2015-10-13 Thread Bruce Richardson
On Mon, Oct 12, 2015 at 10:18:30PM -0700, Stephen Hemminger wrote: > On Tue, 13 Oct 2015 02:57:46 + > "Sanford, Robert" wrote: > > > I'm hoping that someone (perhaps at Intel) can help us understand > > an IXGBE RX packet loss issue we're able to reproduce with testpmd. > > > > We run testpm

[dpdk-dev] IXGBE RX packet loss with 5+ cores

2015-10-13 Thread Sanford, Robert
>>> [Robert:] >>> 1. The 82599 device supports up to 128 queues. Why do we see trouble >>> with as few as 5 queues? What could limit the system (and one port >>> controlled by 5+ cores) from receiving at line-rate without loss? >>> >>> 2. As far as we can tell, the RX path only touches the device

[dpdk-dev] IXGBE RX packet loss with 5+ cores

2015-10-13 Thread Alexander Duyck
On 10/13/2015 07:47 AM, Sanford, Robert wrote: [Robert:] 1. The 82599 device supports up to 128 queues. Why do we see trouble with as few as 5 queues? What could limit the system (and one port controlled by 5+ cores) from receiving at line-rate without loss? 2. As far

[dpdk-dev] IXGBE RX packet loss with 5+ cores

2015-10-13 Thread Venkatesan, Venky
On 10/13/2015 7:47 AM, Sanford, Robert wrote: [Robert:] 1. The 82599 device supports up to 128 queues. Why do we see trouble with as few as 5 queues? What could limit the system (and one port controlled by 5+ cores) from receiving at line-rate without loss? 2. As far

[dpdk-dev] IXGBE RX packet loss with 5+ cores

2015-10-13 Thread Sanford, Robert
I'm hoping that someone (perhaps at Intel) can help us understand an IXGBE RX packet loss issue we're able to reproduce with testpmd. We run testpmd with various numbers of cores. We offer line-rate traffic (~14.88 Mpps) to one ethernet port, and forward all received packets via the second port.

[dpdk-dev] IXGBE RX packet loss with 5+ cores

2015-10-12 Thread Stephen Hemminger
On Tue, 13 Oct 2015 02:57:46 + "Sanford, Robert" wrote: > I'm hoping that someone (perhaps at Intel) can help us understand > an IXGBE RX packet loss issue we're able to reproduce with testpmd. > > We run testpmd with various numbers of cores. We offer line-rate > traffic (~14.88 Mpps) to on