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[72.235.13.41]) by smtp.gmail.com with ESMTPSA id z125-20020a633383000000b0058a381de499sm2075450pgz.77.2023.10.12.12.55.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 12 Oct 2023 12:55:56 -0700 (PDT) Sender: Tejun Heo Date: Thu, 12 Oct 2023 09:55:55 -1000 From: Tejun Heo To: Ming Lei Cc: Jens Axboe , linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, Juri Lelli , Andrew Theurer , Joe Mario , Sebastian Jug , Frederic Weisbecker Subject: Re: [PATCH] blk-mq: add module parameter to not run block kworker on isolated CPUs Message-ID: References: <20231010142216.1114752-1-ming.lei@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Spam-Status: No, score=-1.0 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on fry.vger.email Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (fry.vger.email [0.0.0.0]); Thu, 12 Oct 2023 12:56:09 -0700 (PDT) Hello, On Wed, Oct 11, 2023 at 08:39:05AM +0800, Ming Lei wrote: > I appreciate that any specific suggestions about dealing with isolated CPUs > generically for bound WQ can be shared. Oh, all I meant was whether we can at least collect this into or at least adjacent to the existing housekeeping / isolcpu parameters. Let's say there's someone who really wants to isolated some CPUs, how would they find out the different parameters if they're scattered across different subsystems? Thanks. -- tejun