Hi zhengchuan, > -----Original Message----- > From: zhengchuan > Sent: Saturday, October 17, 2020 12:26 PM > To: quint...@redhat.com; dgilb...@redhat.com > Cc: Zhanghailiang <zhang.zhanghaili...@huawei.com>; Chenzhendong (alex) > <alex.c...@huawei.com>; Xiexiangyou <xiexiang...@huawei.com>; wanghao > (O) <wanghao...@huawei.com>; yubihong <yubih...@huawei.com>; > fengzhim...@huawei.com; qemu-devel@nongnu.org > Subject: [PATCH v3 00/18] Support Multifd for RDMA migration > > Now I continue to support multifd for RDMA migration based on my colleague > zhiming's work:) > > 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 > > 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. > > 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; > > 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 | > +++++++++++++++++++++++++++++++++++++++++++++++++ > > 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 > > 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 > > 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 > > 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(-) > > -- > 1.8.3.1
