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Wed, 21 Oct 2020 17:25:29 +0800 From: Zhanghailiang To: zhengchuan , "quintela@redhat.com" , "dgilbert@redhat.com" Subject: RE: [PATCH v3 00/18] Support Multifd for RDMA migration Thread-Topic: [PATCH v3 00/18] Support Multifd for RDMA migration Thread-Index: AQHWpDtZDjzq2DgEFkWMVc69bTara6mhzg8A Date: Wed, 21 Oct 2020 09:25:28 +0000 Message-ID: <2ea09ca2cc8c494390b506877f6e5e2c@huawei.com> References: <1602908748-43335-1-git-send-email-zhengchuan@huawei.com> In-Reply-To: <1602908748-43335-1-git-send-email-zhengchuan@huawei.com> Accept-Language: zh-CN, en-US Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.174.186.52] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-CFilter-Loop: Reflected Received-SPF: pass client-ip=45.249.212.187; envelope-from=zhang.zhanghailiang@huawei.com; helo=huawei.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/10/21 05:25:30 X-ACL-Warn: Detected OS = Linux 3.11 and newer [fuzzy] X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_PASS=-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: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "Chenzhendong \(alex\)" , yubihong , "wanghao \(O\)" , "qemu-devel@nongnu.org" , Xiexiangyou Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Hi zhengchuan, > -----Original Message----- > From: zhengchuan > Sent: Saturday, October 17, 2020 12:26 PM > To: quintela@redhat.com; dgilbert@redhat.com > Cc: Zhanghailiang ; Chenzhendong (alex) > ; Xiexiangyou ; wanghao > (O) ; yubihong ; > fengzhimin1@huawei.com; qemu-devel@nongnu.org > Subject: [PATCH v3 00/18] Support Multifd for RDMA migration >=20 > Now I continue to support multifd for RDMA migration based on my colleagu= e > zhiming's work:) >=20 > The previous RFC patches is listed below: > v1: > https://www.mail-archive.com/qemu-devel@nongnu.org/msg669455.html > v2: > https://www.mail-archive.com/qemu-devel@nongnu.org/msg679188.html >=20 > As descried in previous RFC, the RDMA bandwidth is not fully utilized for= over > 25Gigabit NIC because of single channel for RDMA migration. > This patch series is going to support multifd for RDMA migration based on= multifd > framework. >=20 > Comparsion is between origion and multifd RDMA migration is re-tested for= v3. > The VM specifications for migration are as follows: > - VM use 4k page; > - the number of VCPU is 4; > - the total memory is 16Gigabit; > - use 'mempress' tool to pressurize VM(mempress 8000 500); > - use 25Gigabit network card to migrate; >=20 > For origin RDMA and MultiRDMA migration, the total migration times of VM = are > as follows: > +++++++++++++++++++++++++++++++++++++++++++++++++ > | | NOT rdma-pin-all | rdma-pin-all | > +++++++++++++++++++++++++++++++++++++++++++++++++ > | origin RDMA | 26 s | 29 s | > ------------------------------------------------- > | MultiRDMA | 16 s | 17 s | > +++++++++++++++++++++++++++++++++++++++++++++++++ >=20 > Test the multifd RDMA migration like this: > virsh migrate --live --multiFd --migrateuri There is no option '--multiFd' for virsh commands, It seems that, we added = this private option for internal usage. It's better to provide testing method by using qemu commands. Thanks. > rdma://192.168.1.100 [VM] --listen-address 0.0.0.0 > qemu+tcp://192.168.1.100/system --verbose >=20 > v2 -> v3: > create multifd ops for both tcp and rdma > do not export rdma to avoid multifd code in mess > fix build issue for non-rdma > fix some codestyle and buggy code >=20 > Chuan Zheng (18): > migration/rdma: add the 'migrate_use_rdma_pin_all' function > migration/rdma: judge whether or not the RDMA is used for migration > migration/rdma: create multifd_setup_ops for Tx/Rx thread > migration/rdma: add multifd_setup_ops for rdma > migration/rdma: do not need sync main for rdma > migration/rdma: export MultiFDSendParams/MultiFDRecvParams > migration/rdma: add rdma field into multifd send/recv param > migration/rdma: export getQIOChannel to get QIOchannel in rdma > migration/rdma: add multifd_rdma_load_setup() to setup multifd rdma > migration/rdma: Create the multifd recv channels for RDMA > migration/rdma: record host_port for multifd RDMA > migration/rdma: Create the multifd send channels for RDMA > migration/rdma: Add the function for dynamic page registration > migration/rdma: register memory for multifd RDMA channels > migration/rdma: only register the memory for multifd channels > migration/rdma: add rdma_channel into Migrationstate field > migration/rdma: send data for both rdma-pin-all and NOT rdma-pin-all > mode > migration/rdma: RDMA cleanup for multifd migration >=20 > migration/migration.c | 24 +++ > migration/migration.h | 11 ++ > migration/multifd.c | 97 +++++++++- > migration/multifd.h | 24 +++ > migration/qemu-file.c | 5 + > migration/qemu-file.h | 1 + > migration/rdma.c | 503 > +++++++++++++++++++++++++++++++++++++++++++++++++- > 7 files changed, 653 insertions(+), 12 deletions(-) >=20 > -- > 1.8.3.1