From: Peter Xu <peterx@redhat.com>
To: Yu Zhang <yu.zhang@ionos.com>
Cc: "Michael Galaxy" <mgalaxy@akamai.com>,
"Jinpu Wang" <jinpu.wang@ionos.com>,
"Elmar Gerdes" <elmar.gerdes@ionos.com>,
"Zheng Chuan" <zhengchuan@huawei.com>,
"Gonglei (Arei)" <arei.gonglei@huawei.com>,
"Daniel P. Berrangé" <berrange@redhat.com>,
"Markus Armbruster" <armbru@redhat.com>,
"Zhijian Li (Fujitsu)" <lizhijian@fujitsu.com>,
"qemu-devel@nongnu.org" <qemu-devel@nongnu.org>,
"Yuval Shaia" <yuval.shaia.ml@gmail.com>,
"Kevin Wolf" <kwolf@redhat.com>,
"Prasanna Kumar Kalever" <prasanna.kalever@redhat.com>,
"Cornelia Huck" <cohuck@redhat.com>,
"Michael Roth" <michael.roth@amd.com>,
"Prasanna Kumar Kalever" <prasanna4324@gmail.com>,
"Paolo Bonzini" <pbonzini@redhat.com>,
"qemu-block@nongnu.org" <qemu-block@nongnu.org>,
"devel@lists.libvirt.org" <devel@lists.libvirt.org>,
"Hanna Reitz" <hreitz@redhat.com>,
"Michael S. Tsirkin" <mst@redhat.com>,
"Thomas Huth" <thuth@redhat.com>,
"Eric Blake" <eblake@redhat.com>,
"Song Gao" <gaosong@loongson.cn>,
"Marc-André Lureau" <marcandre.lureau@redhat.com>,
"Alex Bennée" <alex.bennee@linaro.org>,
"Wainer dos Santos Moschetta" <wainersm@redhat.com>,
"Beraldo Leal" <bleal@redhat.com>,
Pannengyuan <pannengyuan@huawei.com>,
Xiexiangyou <xiexiangyou@huawei.com>,
"Fabiano Rosas" <farosas@suse.de>
Subject: Re: [PATCH-for-9.1 v2 2/3] migration: Remove RDMA protocol handling
Date: Tue, 21 May 2024 18:15:03 -0400 [thread overview]
Message-ID: <Zk0c51D1Oo6NdIxR@x1n> (raw)
In-Reply-To: <CAHEcVy4d7uJENZ1hRx2FBzbw22qN4Qm0TwtxvM5DLw3s81Zp_g@mail.gmail.com>
On Fri, May 17, 2024 at 03:01:59PM +0200, Yu Zhang wrote:
> Hello Michael and Peter,
Hi,
>
> Exactly, not so compelling, as I did it first only on servers widely
> used for production in our data center. The network adapters are
>
> Ethernet controller: Broadcom Inc. and subsidiaries NetXtreme BCM5720
> 2-port Gigabit Ethernet PCIe
Hmm... I definitely thinks Jinpu's Mellanox ConnectX-6 looks more
reasonable.
https://lore.kernel.org/qemu-devel/CAMGffEn-DKpMZ4tA71MJYdyemg0Zda15wVAqk81vXtKzx-LfJQ@mail.gmail.com/
Appreciate a lot for everyone helping on the testings.
> InfiniBand controller: Mellanox Technologies MT27800 Family [ConnectX-5]
>
> which doesn't meet our purpose. I can choose RDMA or TCP for VM
> migration. RDMA traffic is through InfiniBand and TCP through Ethernet
> on these two hosts. One is standby while the other is active.
>
> Now I'll try on a server with more recent Ethernet and InfiniBand
> network adapters. One of them has:
> BCM57414 NetXtreme-E 10Gb/25Gb RDMA Ethernet Controller (rev 01)
>
> The comparison between RDMA and TCP on the same NIC could make more sense.
It looks to me NICs are powerful now, but again as I mentioned I don't
think it's a reason we need to deprecate rdma, especially if QEMU's rdma
migration has the chance to be refactored using rsocket.
Is there anyone who started looking into that direction? Would it make
sense we start some PoC now?
Thanks,
--
Peter Xu
next prev parent reply other threads:[~2024-05-21 22:16 UTC|newest]
Thread overview: 81+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-28 13:02 [PATCH-for-9.1 v2 0/3] rdma: Remove RDMA subsystem and pvrdma device Philippe Mathieu-Daudé
2024-03-28 13:02 ` [PATCH-for-9.1 v2 1/3] hw/rdma: Remove pvrdma device and rdmacm-mux helper Philippe Mathieu-Daudé
2024-03-28 17:51 ` Thomas Huth
2024-03-28 13:02 ` [PATCH-for-9.1 v2 2/3] migration: Remove RDMA protocol handling Philippe Mathieu-Daudé
2024-03-28 14:18 ` Fabiano Rosas
2024-03-28 15:01 ` Peter Xu
2024-03-28 15:22 ` Thomas Huth
2024-03-28 19:04 ` Peter Xu
2024-03-29 1:53 ` Zhijian Li (Fujitsu) via
2024-03-29 10:28 ` Philippe Mathieu-Daudé
2024-03-29 19:44 ` Daniel P. Berrangé
2024-04-01 7:55 ` Zhijian Li (Fujitsu) via
2024-04-01 21:26 ` Yu Zhang
2024-04-02 21:23 ` Peter Xu
2024-04-08 14:07 ` Jinpu Wang
2024-04-08 16:18 ` Peter Xu
2024-04-09 7:32 ` Jinpu Wang
2024-04-09 19:46 ` Peter Xu
2024-04-10 2:28 ` Zhijian Li (Fujitsu) via
2024-04-10 13:49 ` Peter Xu
2024-04-11 14:20 ` Peter Xu
2024-04-11 16:36 ` Yu Zhang
2024-04-12 14:04 ` Peter Xu
2024-04-29 13:08 ` Michael Galaxy
2024-04-29 14:56 ` Peter Xu
2024-04-29 20:45 ` Yu Zhang
2024-04-29 20:56 ` Michael Galaxy
2024-04-30 7:15 ` Markus Armbruster
2024-04-30 8:00 ` Daniel P. Berrangé
2024-05-01 15:31 ` Peter Xu
2024-05-01 15:59 ` Daniel P. Berrangé
2024-05-01 16:16 ` Peter Xu
2024-05-02 13:22 ` Michael Galaxy
2024-05-02 13:30 ` Jinpu Wang
2024-05-02 16:19 ` Peter Xu
2024-05-02 17:10 ` Jinpu Wang
2024-05-03 6:40 ` Jinpu Wang
2024-05-03 14:33 ` Peter Xu
2024-05-06 10:08 ` Jinpu Wang
2024-05-06 15:28 ` Peter Xu
2024-05-07 4:52 ` Jinpu Wang
2024-05-08 10:06 ` Daniel P. Berrangé
2024-05-06 2:06 ` Gonglei (Arei) via
2024-05-06 15:18 ` Peter Xu
2024-05-07 1:50 ` Gonglei (Arei) via
2024-05-07 16:28 ` Peter Xu
2024-05-09 8:58 ` Zheng Chuan via
2024-05-09 14:13 ` Peter Xu
2024-05-13 7:30 ` Jinpu Wang
2024-05-14 15:19 ` Yu Zhang
2024-05-16 17:29 ` Michael Galaxy
2024-05-17 13:01 ` Yu Zhang
2024-05-21 22:15 ` Peter Xu [this message]
2024-05-28 9:06 ` Gonglei (Arei) via
2024-05-28 9:11 ` Jinpu Wang
2024-05-28 15:54 ` Peter Xu
2024-05-29 2:43 ` Gonglei (Arei) via
2024-05-29 4:33 ` Jinpu Wang
2024-05-29 6:05 ` Greg Sword
2024-05-29 7:04 ` Jinpu Wang
2024-05-29 8:30 ` Gonglei (Arei) via
2024-05-29 9:17 ` Jinpu Wang
2024-05-29 9:34 ` Gonglei (Arei) via
2024-05-29 9:44 ` Jinpu Wang
2024-05-29 9:47 ` Gonglei (Arei) via
2024-05-29 11:13 ` Haris Iqbal
2024-05-30 18:23 ` Sean Hefty
2024-05-29 16:33 ` Peter Xu
2024-05-13 18:52 ` Michael Galaxy
2024-06-05 0:31 ` Dr. David Alan Gilbert
2024-06-05 14:10 ` Peter Xu
2024-06-05 14:59 ` Peter Xu
2024-06-05 20:48 ` Dr. David Alan Gilbert
2024-06-05 21:18 ` Peter Xu
2024-06-07 8:57 ` Gonglei (Arei) via
2024-04-11 14:42 ` Jinpu Wang
2024-04-09 9:00 ` Markus Armbruster
2024-03-28 13:02 ` [PATCH-for-9.1 v2 3/3] block/gluster: " Philippe Mathieu-Daudé
2024-03-28 17:54 ` Thomas Huth
2024-03-29 9:17 ` [PATCH-for-9.1 v2 0/3] rdma: Remove RDMA subsystem and pvrdma device Michael S. Tsirkin
2024-04-03 9:37 ` Philippe Mathieu-Daudé
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