* Preliminary AWS ENA Benchmark Results on DPDK
@ 2022-03-28 0:03 fwefew 4t4tg
0 siblings, 0 replies; only message in thread
From: fwefew 4t4tg @ 2022-03-28 0:03 UTC (permalink / raw)
[-- Attachment #1: Type: text/plain, Size: 1363 bytes --]
I show two c5n.metal boxes with AWS ENA NICs running under DPDK in the same
data center running 1 TXQ and 1 RXQ transceiving 72-byte UDP packets
- transmit around 874,410 packets/sec/queue
If the NIC's TXQ ring is not full the application code can hand off packets
to the NICs output buffer as fast as 415 ns/pkt or some 2.4 million
packets/sec. But once the TXQ ring or HW buffers get full, throughput drops
about 3x. I will update the link shortly with the RX states. In short,
performance seems decent except when rings are full.
But since AWS ENA NICs are virtual --- they are not a bonafide NIC card
plugged into the computer's PCI bus, I'm not sure if these numbers are
good, average, or suck. Indeed as per:
chapter 12 (virtio) page 236 virtio is at least partially interrupt driven.
I had no idea of the details but interrupt driven surely has to under
perform a vanilla case where the CPU/NIC/PCI work in unison without all the
virtualization technology. I'm not even sure, by extension, whether the ENA
driver is really 100% poll-driven.
Any context/feedback here would be appreciated.
[-- Attachment #2: Type: text/html, Size: 1771 bytes --]
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2022-03-28 0:03 UTC | newest]
Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-03-28 0:03 Preliminary AWS ENA Benchmark Results on DPDK fwefew 4t4tg
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