Thread (3 messages) 3 messages, 2 authors, 2023-08-24

Re: [PATCH v3 1/1] gro: decrease size of CB

From: Gal Pressman <hidden>
Date: 2023-08-23 14:43:45
Also in: lkml

Possibly related (same subject, not in this thread)

On 28/06/2023 17:19, David Ahern wrote:
On 6/28/23 6:42 AM, Gal Pressman wrote:
quoted
On 27/06/2023 17:21, David Ahern wrote:
quoted
On 6/26/23 2:55 AM, Gal Pressman wrote:
quoted
I believe this commit broke gro over udp tunnels.
I'm running iperf tcp traffic over geneve interfaces and the bandwidth
is pretty much zero.
Could you add a test script to tools/testing/selftests/net? It will help
catch future regressions.
I'm checking internally, someone from the team might be able to work on
this, though I'm not sure that a test that verifies bandwidth makes much
sense as a selftest.
With veth and namespaces I expect up to 25-30G performance levels,
depending on the test. When something fundamental breaks like this patch
a drop to < 1G would be a red flag, so there is value to the test.
Circling back to this, I believe such test already exists:
tools/testing/selftests/net/udpgro_fwd.sh

And it indeed fails before Richard's fix.

I guess all that's left is to actually run these tests :)?
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