On 2020/10/24 3:02, Dr. David Alan Gilbert wrote:
> * Zheng Chuan ([email protected]) wrote:
>>
>>
>> On 2020/10/21 17:25, Zhanghailiang wrote:
>>> Hi zhengchuan,
>>>
>>>> -----Original Message-----
>>>> From: zhengchuan
>>>> Sent: Saturday, October 17, 2020 12:26 PM
>>>> To: [email protected]; [email protected]
>>>> Cc: Zhanghailiang <[email protected]>; Chenzhendong (alex)
>>>> <[email protected]>; Xiexiangyou <[email protected]>; wanghao
>>>> (O) <[email protected]>; yubihong <[email protected]>;
>>>> [email protected]; [email protected]
>>>> 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/[email protected]/msg669455.html
>>>> v2:
>>>> https://www.mail-archive.com/[email protected]/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
