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Tsirkin" To: Tobias Huschle Cc: Luis Machado , Jason Wang , Abel Wu , Peter Zijlstra , Linux Kernel , kvm@vger.kernel.org, virtualization@lists.linux.dev, netdev@vger.kernel.org, nd Subject: Re: EEVDF/vhost regression (bisected to 86bfbb7ce4f6 sched/fair: Add lag based placement) Message-ID: <20240319042829-mutt-send-email-mst@kernel.org> References: <07974.124020102385100135@us-mta-501.us.mimecast.lan> <20240201030341-mutt-send-email-mst@kernel.org> <89460.124020106474400877@us-mta-475.us.mimecast.lan> <20240311130446-mutt-send-email-mst@kernel.org> <73123.124031407552500165@us-mta-156.us.mimecast.lan> <20240314110649-mutt-send-email-mst@kernel.org> <84704.124031504335801509@us-mta-515.us.mimecast.lan> <20240315062839-mutt-send-email-mst@kernel.org> Precedence: bulk X-Mailing-List: virtualization@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 In-Reply-To: X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Tue, Mar 19, 2024 at 09:21:06AM +0100, Tobias Huschle wrote: > On 2024-03-15 11:31, Michael S. Tsirkin wrote: > > On Fri, Mar 15, 2024 at 09:33:49AM +0100, Tobias Huschle wrote: > > > On Thu, Mar 14, 2024 at 11:09:25AM -0400, Michael S. Tsirkin wrote: > > > > > > > > Could you remind me pls, what is the kworker doing specifically that > > vhost is relying on? > > The kworker is handling the actual data moving in memory if I'm not > mistaking. I think that is the vhost process itself. Maybe you mean the guest thread versus the vhost thread then?