* DPDK and packet loss troubleshooting
@ 2022-05-07 16:55 Laurent Dumont
0 siblings, 0 replies; only message in thread
From: Laurent Dumont @ 2022-05-07 16:55 UTC (permalink / raw)
[-- Attachment #1: Type: text/plain, Size: 996 bytes --]
We are troubleshooting a vendor application that is leveraging DPDK at the
- Openstack with RHOSP / RHEL
- OVS as the underlying virtual switching layer. *The VM is not using
- VM acts as a load balancer (traffic pattern in IN+OUT). Traffic
arrives on a VLAN (provider network) and exits through a VXLAN network
(internal) to be forwarded to application servers.
- VMs are using pinned cores
- 4 cores total
- 2 for the OS
- 2 for DPDK : 1 TX one RX
- Using hugepages
- There are no other VMs on the physical compute.
- compute is using isolated cores for the OS. No collision with the VM
At low packet rates (20k~ PPS), it seems that the DPDK layer fails to
transmit packets on the TX queue. This triggers a failover.
We are not seeing anything particularly obvious on the compute side. Is
there anything at the DPDK layer that should be clear about why there is a
failure to TX?
[-- Attachment #2: Type: text/html, Size: 1141 bytes --]
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2022-05-07 16:55 UTC | newest]
Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-05-07 16:55 DPDK and packet loss troubleshooting Laurent Dumont
DPDK usage discussions
This inbox may be cloned and mirrored by anyone:
git clone --mirror http://inbox.dpdk.org/users/0 users/git/0.git
# If you have public-inbox 1.1+ installed, you may
# initialize and index your mirror using the following commands:
public-inbox-init -V2 users users/ http://inbox.dpdk.org/users \
Example config snippet for mirrors.
Newsgroup available over NNTP:
AGPL code for this site: git clone https://public-inbox.org/public-inbox.git