[dpdk-dev] Polling too often at lower packet rates?

Paul Emmerich wrote: > Stephen Hemminger wrote: > >> Your excess polling consumes PCI bandwidth which is a fixed resource. > > I doubt that this is the problem for three reasons: > 4th: polling should not cause a PCIe access as all the required information is written to memory by the NIC

[dpdk-dev] Polling too often at lower packet rates?

Stephen Hemminger wrote: > Your excess polling consumes PCI bandwidth which is a fixed resource. I doubt that this is the problem for three reasons: * The poll rate would regulate itself if the PCIe bus was the bottleneck * This problem only occurs with 82599 chips, not with X540 chips

[dpdk-dev] Polling too often at lower packet rates?

Hi Stephen, Thanks, that was an informative talk. In this case, are you referring to your comments about the thermal budget? That?s definitely interesting, but there must be more to it than that. Again, if I loop over all 6 ports (i.e., continue to keep the CPU busy), it works around the

[dpdk-dev] Polling too often at lower packet rates?

On Thu, 9 Apr 2015 15:26:23 -0300 Aaron Campbell wrote: > Hi Stephen, > > Thanks, that was an informative talk. In this case, are you referring to > your comments about the thermal budget? > > That?s definitely interesting, but there must be more to it than that. > Again, if I loop over

[dpdk-dev] Polling too often at lower packet rates?

> -Original Message- > From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of Aaron Campbell > Sent: Wednesday, April 08, 2015 5:36 PM > To: dev at dpdk.org > Subject: [dpdk-dev] Polling too often at lower packet rates? > > Hi, > > I have a machine with 6

[dpdk-dev] Polling too often at lower packet rates?

We use adaptive polling loop similar to l3fwd-power example. See: http://video.fosdem.org/2015/devroom-network_management_and_sdn/ On Wed, Apr 8, 2015 at 9:35 AM, Aaron Campbell wrote: > Hi, > > I have a machine with 6 DPDK ports (4 igb, 2 ixgbe), with 1.23Mpps traffic > offered to only one