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Mon, 08 Nov 2021 23:45:18 -0800 (PST) Received: from localhost ([178.139.230.94]) by smtp.gmail.com with ESMTPSA id r17sm1814845wmq.11.2021.11.08.23.45.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 08 Nov 2021 23:45:18 -0800 (PST) From: Juan Quintela To: "Rao, Lei" Subject: Re: [PATCH v7 2/2] Reduce the PVM stop time during Checkpoint In-Reply-To: <1636427095-11739-3-git-send-email-lei.rao@intel.com> (Lei Rao's message of "Tue, 9 Nov 2021 11:04:55 +0800") References: <1636427095-11739-1-git-send-email-lei.rao@intel.com> <1636427095-11739-3-git-send-email-lei.rao@intel.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.2 (gnu/linux) Date: Tue, 09 Nov 2021 08:45:19 +0100 Message-ID: <877ddhg4c0.fsf@secure.mitica> MIME-Version: 1.0 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=quintela@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain Received-SPF: pass client-ip=170.10.133.124; envelope-from=quintela@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -34 X-Spam_score: -3.5 X-Spam_bar: --- X-Spam_report: (-3.5 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.699, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H2=-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: , Reply-To: quintela@redhat.com Cc: qemu-devel@nongnu.org, chen.zhang@intel.com, lukasstraub2@web.de, zhang.zhanghailiang@huawei.com, dgilbert@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" "Rao, Lei" wrote: > From: "Rao, Lei" > > When flushing memory from ram cache to ram during every checkpoint > on secondary VM, we can copy continuous chunks of memory instead of > 4096 bytes per time to reduce the time of VM stop during checkpoint. > > Signed-off-by: Lei Rao > Reviewed-by: Dr. David Alan Gilbert > Reviewed-by: Lukas Straub > Tested-by: Lukas Straub Reviewed-by: Juan Quintela Queued.