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It would be super helpful if someone could help me confirm this behaviour detoriation I noticed 17 years back around kernel 2.6.17. Subjectively, something with the I/O stack broke and never quite recovered. For that, please propose robust ways of testing interactivity / responsiveness under concurrent load. The goal is to use it for example with the well-known PTS to bisect the relevant kernel range. The inbuilt `phoronix-test-suite benchmark kernel` will only run a series of low-complexity scenarios that say very little about what happens under heavy multitasking load.

The test case should be stressing I/O paths as well as CPU and preferably induce swapping. How could this be automated reliably?

AI asstisted answers welcome.

Full story: I remember using Gentoo at the time and back around 2007, I was impressed by the extreme desktop fluidity even when compiling openoffice, watching a HD sat tv stream and skipping between applications and many browser tabs on a moderate machine.. Then came another fluke kernel update and since then, never had the experience again of a robustly smooth desktop experience even under heavy (swap!) load..

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I am having trouble with a delivery. Cant return it because its stuck with bot loops and wont let me chat with a human. It used to be the best customer focused service. Now it's all poor quality bots and done.

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