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micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="vLlQ3zIYsq/GZ1dK" Content-Disposition: inline In-Reply-To: --vLlQ3zIYsq/GZ1dK Content-Type: text/plain; protected-headers=v1; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Date: Mon, 22 Jan 2024 13:17:41 +0100 From: Marek =?utf-8?Q?Marczykowski-G=C3=B3recki?= To: George Dunlap Cc: Demi Marie Obenour , Xen-devel , Juergen Gross Subject: Re: Sketch of an idea for handling the "mixed workload" problem On Mon, Jan 22, 2024 at 11:54:14AM +0000, George Dunlap wrote: > The other issue I have with this (and essentially where I got stuck > developing credit2 in the first place) is testing: how do you ensure > that it has the properties that you expect? =20 Audio is actually quite nice use case at this, since it's quite sensitive for scheduling jitter. I think even a simple "PCI passthrough a sound card and play/record something" should show results. Especially you can measure how hard you can push the system (for example artificial load in other domains) until it breaks. > How do you develop a > "regression test" to make sure that server-based workloads don't have > issues in this sort of case? For this I believe there are several benchmarking methods already, starting with old trusty "Linux kernel build time". --=20 Best Regards, Marek Marczykowski-G=C3=B3recki Invisible Things Lab --vLlQ3zIYsq/GZ1dK Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEhrpukzGPukRmQqkK24/THMrX1ywFAmWuXOYACgkQ24/THMrX 1yzjKAf/XztYiSO2yHgUmrbN1EhUuzdfsX9PTsgA0MiPySP6PrVixK52HxwRaeXU YQ6IfiOzJiX9e9IwY73QIy/lMvoY3acIDi1PAAcWhe5xLB28aeRNANU4B0TISAFs 7pn26G7DuHTJl6cOUGKRRSJM/2yvoHLrBrB9g6nzT0gA6wuHZu3wffFA/zz3vPDe JVGSf9tuekF4Op5NfK/CbdipDCcCv/1+VgxfrlHz7Z9tSCYIPLvLZ9ffbkDl13FM W3rBMenhE3lcbkpH5qa4S2p9d9mF23nrdCWocIGdi9c0Pmkxai2NNwG0rEp81btQ 7d+OTTLT6R5C8BR0fDiyEz53Vm36RA== =lehY -----END PGP SIGNATURE----- --vLlQ3zIYsq/GZ1dK--