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netdev call - Jan 30th

ANN Jakub Kicinski 1 participant 2 messages Jan 29, 2024 – Jan 31, 2024

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Jakub Kicinski

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Hi,

The bi-weekly netdev call at https://bbb.lwn.net/b/jak-wkr-seg-hjn
is scheduled tomorrow at 8:30 am (PT) / 5:30 pm (~EU).

We'll certainly go over CI updates, but please feel free to suggest other topics!

In terms of the review rotation - this week's reviewer is nVidia.

author maintainer
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Quoted 9 lines · On Mon, 29 Jan 2024 11:20:57 -0800 Jakub Kicinski wrote:

Hi,

The bi-weekly netdev call at https://bbb.lwn.net/b/jak-wkr-seg-hjn
is scheduled tomorrow at 8:30 am (PT) / 5:30 pm (~EU).

We'll certainly go over CI updates, but please feel free to suggest other topics!

In terms of the review rotation - this week's reviewer is nVidia.

Meeting notes:

* Tour of the test runner UIs:
* System status and test summary:
https://netdev.bots.linux.dev/status.html
* Example of patchwork reporting (see the netdev/contest check):

     https://patchwork.kernel.org/project/netdevbpf/patch/[email protected]/
   * Clicking takes us to the list of tests run as part of the branch
     report:
     https://netdev.bots.linux.dev/contest.html?pw-n=0&branch=net-next-2024-01-29--21-00

* Last but not least the UI for flaky tests:
https://netdev.bots.linux.dev/flakes.html

* Mojatatu is running TCD on their end, so the remote executor thing is working fine. Reminder that the data formats here:
https://docs.google.com/document/d/1TPlOOvv0GaopC3fzW-wiq8TYpl7rh8Vl_mmal0uFeJc/
* Pedro: TCD executor code is at https://github.com/p4tc-dev/tc-executor

* What to do about slow tests? Split into a new group? Skip? Export a variable to let tests know that the perf is low?
* Going with the export for now - KSFT_MACHINE_SLOW=yes Tests can either adjust their “acceptance criteria” down, or report XFAIL
* Jesse: some of the perf tests can be tuned down with things like netem
* Petr: we want them to run on HW as well, so they are kept simple
* Matthieu: MPTCP selftests auto-detect kernel slow downs (kmemleak, lockdep, kasan, prove_locking, etc. by looking at kallsyms). We hesitated to add a check for Qemu without KVM but we recently modified the selftests to require less resources
* Willem: how do we deal with latency / timing sensitive tests?
* Jakub: same approach as perf tests for now, look for the env var

* HW dependent tests get skipped for veth (ethtool, l3 stats)
* Petr: goal was to skip cleanly on veth and fail when the env misses any tooling etc.
* Jakub: makes sense but we do have drivers/net/ and could separate the tests since they have no chance of running
* Petr: with recent lib.sh changes it should be doable

* The NIPA repo has moved, Netronome has transferred the ownership to linux-netdev so we’ll use https://github.com/linux-netdev/nipa going forward.