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[99.254.121.117]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-6b61ba9f323sm494146d6.132.2024.07.08.08.46.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 08 Jul 2024 08:46:09 -0700 (PDT) Date: Mon, 8 Jul 2024 11:46:06 -0400 From: Peter Xu To: Yichen Wang Cc: "Liu, Yuan1" , Paolo Bonzini , =?utf-8?B?IkRhbmllbCBQLiBCZXJyYW5nw6ki?= , Eduardo Habkost , =?utf-8?Q?Marc-Andr=C3=A9?= Lureau , Thomas Huth , Philippe =?utf-8?Q?Mathieu-Daud=C3=A9?= , Fabiano Rosas , Eric Blake , Markus Armbruster , Laurent Vivier , "qemu-devel@nongnu.org" , Hao Xiang , "Zou, Nanhai" , "Ho-Ren (Jack) Chuang" Subject: Re: [External] [PATCH v3 0/4] Implement using Intel QAT to offload ZLIB Message-ID: References: <20240627223445.95096-1-yichen.wang@bytedance.com> <8E9B92DE-5576-48C9-8878-3F750DA116E4@bytedance.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <8E9B92DE-5576-48C9-8878-3F750DA116E4@bytedance.com> Received-SPF: pass client-ip=170.10.129.124; envelope-from=peterx@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -21 X-Spam_score: -2.2 X-Spam_bar: -- X-Spam_report: (-2.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.142, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On Fri, Jul 05, 2024 at 11:28:25AM -0700, Yichen Wang wrote: > Just want to add some information here. So in ByteDance, the current > generation server is quipped with 2*100Gb NIC. We reserve 10Gbps for > control plane purposes which includes live migration here. So it is not > about we are using “good network”, it is about not normal to use full > bandwidth for control plane purposes. Hence we do have a requirements for > QAT/IAA in these cases. Yes, this makes sense. But then you may then also want to figure out the high cpu consumption of those cards, to not interrupt more important workloads? I saw there's a new version posted, I didn't see an explanation of the cpu consumption issue mentioned. Meanwhile I also see that the docs/ update is missing. Would you consider adding both by replying to the new version? -- Peter Xu