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[34.145.139.141]) by smtp.gmail.com with ESMTPSA id 00721157ae682-7ea1e357109sm105141597b3.0.2026.06.09.19.48.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 09 Jun 2026 19:48:34 -0700 (PDT) Date: Tue, 09 Jun 2026 22:48:34 -0400 From: Willem de Bruijn To: Willem de Bruijn , Jakub Kicinski , davem@davemloft.net Cc: netdev@vger.kernel.org, edumazet@google.com, pabeni@redhat.com, andrew+netdev@lunn.ch, horms@kernel.org, Jakub Kicinski Message-ID: In-Reply-To: References: <20260609180803.1093428-1-kuba@kernel.org> Subject: Re: [PATCH net-next v2 0/2] selftests: drv-net: so_txtime: trivial fixes Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Willem de Bruijn wrote: > Jakub Kicinski wrote: > > I noticed that so_txtime is only passing on NIPA setups which are > > looped within a single host. The cross-machine cases just flat out > > fail. The initial bug is obvious - the test does not deploy the binary. > > But even with that I think more work would be needed to sync the > > time / adjust the expectations for a dual-machine test. > > > > Willem promised to follow up on the fundamental issues with 2-host > > setups :) > > Yep. With these fixes the tests run fine manually on a non-dbg kernel. The CI failures are on the netdev-X710-dbg remote only, correct? https://netdev.bots.linux.dev/flakes.html https://netdev.bots.linux.dev/contest.html?executor=hwksft-X710-dbg&test=so-txtime-py Those flakes all have a delivery later than expected, e.g., # # Exception| STDERR: payload:a delay:30747 expected:0 (us) # # Exception| exceeds variance (4000 us) Does this remote have KSFT_MACHINE_SLOW set? This should only result in error >From contest/remote/lib/vm.py on nipa.git: slowdown = self.config.getfloat('vm', 'slowdown', fallback=0) if slowdown: self.cmd("export KSFT_MACHINE_SLOW=yes") But I don't know where (or whether) I can review this config.