Hi, Dave. Since qemu 6.0 is open and some patches of this series have been reviewed, might you have time to continue reviewing rest of them ?
On 2020/10/25 10:29, Zheng Chuan wrote: > > > On 2020/10/24 3:02, Dr. David Alan Gilbert wrote: >> * Zheng Chuan (zhengch...@huawei.com) wrote: >>> >>> >>> On 2020/10/21 17:25, Zhanghailiang wrote: >>>> 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. >>>> >>>> >>> Hi, Hailiang >>> Yes, it should be, will update in V4. >>> >>> Also, Ping. >>> >>> Dave, Juan. >>> >>> Any suggestion and comment about this series? Hope this feature could catch >>> up with qemu 5.2. >> >> It's a bit close; I'm not sure if I'll have time to review it on Monday >> before the pull. >> >> Dave >> > Yes, it is. > Then we may wait for next merge window after fully review:) > >>>> 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 >>>> >>>> . >>>> >>> >>> -- >>> Regards. >>> Chuan >>> > -- Regards. Chuan
