From: Muli Ben-Yehuda <muli@il.ibm.com>
To: Anthony Liguori <anthony@codemonkey.ws>
Cc: Greg KH <greg@kroah.com>, Matthew Wilcox <matthew@wil.cx>,
H L <swdevyid@yahoo.com>, Yu Zhao <yu.zhao@intel.com>,
randy.dunlap@oracle.com, grundler@parisc-linux.org,
achiang@hp.com, linux-pci@vger.kernel.org, rdreier@cisco.com,
linux-kernel@vger.kernel.org, jbarnes@virtuousgeek.org,
virtualization@lists.linux-foundation.org, kvm@vger.kernel.org,
mingo@elte.hu, Chris Wright <chrisw@sous-sol.org>
Subject: Re: [PATCH 0/16 v6] PCI: Linux kernel SR-IOV support
Date: Sun, 9 Nov 2008 08:41:48 +0200 [thread overview]
Message-ID: <20081109064147.GD7123@il.ibm.com> (raw)
In-Reply-To: <49137255.9010104@codemonkey.ws>
On Thu, Nov 06, 2008 at 04:40:21PM -0600, Anthony Liguori wrote:
> We've been talking about avoiding hardware passthrough entirely and
> just backing a virtio-net backend driver by a dedicated VF in the
> host. That avoids a huge amount of guest-facing complexity, let's
> migration Just Work, and should give the same level of performance.
I don't believe that it will, and every benchmark I've seen or have
done so far shows a significant performance gap between virtio and
direct assignment, even on 1G ethernet. I am willing however to
reserve judgement until someone implements your suggestion and
actually measures it, preferably on 10G ethernet.
No doubt device assignment---and SR-IOV in particular---are complex,
but I hardly think ignoring it as you seem to propose is the right
approach.
Cheers,
Muli
--
The First Workshop on I/O Virtualization (WIOV '08)
Dec 2008, San Diego, CA, http://www.usenix.org/wiov08/
<->
SYSTOR 2009---The Israeli Experimental Systems Conference
http://www.haifa.il.ibm.com/conferences/systor2009/
next prev parent reply other threads:[~2008-11-09 6:42 UTC|newest]
Thread overview: 244+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-22 8:38 [PATCH 0/16 v6] PCI: Linux kernel SR-IOV support Yu Zhao
2008-10-22 8:40 ` [PATCH 1/16 v6] PCI: remove unnecessary arg of pci_update_resource() Yu Zhao
2008-10-22 8:40 ` Yu Zhao
2008-10-22 8:40 ` [PATCH 2/16 v6] PCI: define PCI resource names in an 'enum' Yu Zhao
2008-10-22 8:40 ` Yu Zhao
2008-10-22 14:24 ` Bjorn Helgaas
2008-10-22 14:24 ` Bjorn Helgaas
2008-10-22 14:44 ` Yu Zhao
2008-10-22 14:44 ` Yu Zhao
2008-10-22 14:51 ` Bjorn Helgaas
2008-10-22 14:53 ` Yu Zhao
2008-10-22 14:53 ` Yu Zhao
2008-10-22 14:51 ` Bjorn Helgaas
2008-11-14 0:43 ` Simon Horman
2008-10-22 8:41 ` [PATCH 3/16 v6] PCI: export __pci_read_base Yu Zhao
2008-10-22 8:41 ` Yu Zhao
2008-10-22 8:41 ` [PATCH 4/16 v6] PCI: make pci_alloc_child_bus() be able to handle NULL bridge Yu Zhao
2008-10-22 8:41 ` Yu Zhao
2008-10-22 8:41 ` [PATCH 5/16 v6] PCI: add a wrapper for resource_alignment() Yu Zhao
2008-10-22 8:41 ` Yu Zhao
2008-10-22 8:42 ` [PATCH 6/16 v6] PCI: add a new function to map BAR offset Yu Zhao
2008-10-22 8:42 ` Yu Zhao
2008-10-22 8:42 ` [PATCH 7/16 v6] PCI: cleanup pcibios_allocate_resources() Yu Zhao
2008-10-22 8:42 ` Yu Zhao
2008-10-23 7:10 ` Yinghai Lu
2008-10-23 6:50 ` Yu Zhao
2008-10-23 6:50 ` Yu Zhao
2008-10-23 7:10 ` Yinghai Lu
2008-10-22 8:43 ` [PATCH 8/16 v6] PCI: add boot options to reassign resources Yu Zhao
2008-10-22 14:35 ` Bjorn Helgaas
2008-10-22 14:35 ` Bjorn Helgaas
2008-10-22 14:49 ` Yu Zhao
2008-10-22 14:49 ` Yu Zhao
2008-10-22 8:43 ` Yu Zhao
2008-10-22 8:43 ` [PATCH 9/16 v6] PCI: add boot option to align MMIO resources Yu Zhao
2008-10-22 8:43 ` Yu Zhao
2008-10-22 14:34 ` Bjorn Helgaas
2008-10-22 14:34 ` Bjorn Helgaas
2008-10-22 14:52 ` Yu Zhao
2008-10-22 14:52 ` Yu Zhao
2008-10-22 8:43 ` [PATCH 10/16 v6] PCI: cleanup pci_bus_add_devices() Yu Zhao
2008-10-22 8:43 ` Yu Zhao
2008-10-22 8:44 ` [PATCH 11/16 v6] PCI: split a new function from pci_bus_add_devices() Yu Zhao
2008-10-22 8:44 ` Yu Zhao
2008-10-22 8:44 ` [PATCH 12/16 v6] PCI: support the SR-IOV capability Yu Zhao
2008-10-22 8:44 ` Yu Zhao
2008-10-22 8:44 ` [PATCH 13/16 v6] PCI: reserve bus range for SR-IOV device Yu Zhao
2008-10-22 8:44 ` Yu Zhao
2008-10-22 8:45 ` [PATCH 14/16 v6] PCI: document for SR-IOV user and developer Yu Zhao
2008-10-22 8:45 ` Yu Zhao
2008-10-22 8:45 ` [PATCH 15/16 v6] PCI: document the SR-IOV sysfs entries Yu Zhao
2008-11-06 4:33 ` Greg KH
2008-11-06 4:46 ` Greg KH
2008-11-06 4:46 ` Greg KH
2008-11-07 3:01 ` Zhao, Yu
2008-11-07 3:18 ` Greg KH
2008-11-13 6:50 ` Yu Zhao
2008-11-14 0:55 ` Greg KH
2008-11-17 8:09 ` Yu Zhao
2008-11-18 15:05 ` Greg KH
2008-11-18 15:05 ` Greg KH
2008-11-18 16:49 ` Kay Sievers
2008-11-18 16:49 ` Kay Sievers
2008-11-17 8:09 ` Yu Zhao
2008-11-13 6:50 ` Yu Zhao
2008-11-07 3:18 ` Greg KH
2008-11-07 3:01 ` Zhao, Yu
2008-11-06 4:33 ` Greg KH
2008-10-22 8:45 ` Yu Zhao
2008-10-22 8:45 ` [PATCH 16/16 v6] PCI: document the new PCI boot parameters Yu Zhao
2008-10-22 14:27 ` Bjorn Helgaas
2008-10-22 14:27 ` Bjorn Helgaas
2008-10-22 17:01 ` Randy Dunlap
2008-10-22 17:01 ` Randy Dunlap
2008-11-06 4:32 ` Greg KH
2008-11-07 2:37 ` Zhao, Yu
2008-11-07 2:37 ` Zhao, Yu
2008-11-07 2:50 ` Greg KH
2008-11-07 2:50 ` Greg KH
2008-11-07 3:40 ` Zhao, Yu
2008-11-07 3:40 ` Zhao, Yu
2008-11-07 4:17 ` Matthew Wilcox
2008-12-11 1:43 ` Yu Zhao
2008-12-11 4:33 ` Grant Grundler
2008-12-11 4:33 ` Grant Grundler
2008-12-11 15:39 ` H L
2008-12-11 15:39 ` H L
2008-12-11 1:43 ` Yu Zhao
2008-11-07 4:17 ` Matthew Wilcox
2008-11-07 6:16 ` Greg KH
2008-11-07 7:50 ` Zhao, Yu
2008-11-07 8:02 ` Greg KH
2008-11-07 8:02 ` Greg KH
2008-11-07 8:17 ` Zhao, Yu
2008-11-07 8:17 ` Zhao, Yu
2008-11-07 8:24 ` Greg KH
2008-11-07 8:24 ` Greg KH
2008-11-07 8:35 ` Zhao, Yu
2008-11-07 18:53 ` Greg KH
2008-11-07 18:53 ` Greg KH
2008-11-08 5:00 ` Yu Zhao
2008-11-08 5:00 ` Yu Zhao
2008-11-08 5:25 ` Greg KH
2008-11-08 6:05 ` Yu Zhao
2008-11-08 6:05 ` Yu Zhao
2008-11-08 5:25 ` Greg KH
2008-11-08 5:50 ` freevanx
2008-11-08 5:54 ` Greg KH
2008-11-08 5:54 ` Greg KH
2008-11-07 8:35 ` Zhao, Yu
2008-11-07 7:50 ` Zhao, Yu
2008-11-09 14:19 ` Pavel Machek
2008-11-09 14:19 ` Pavel Machek
2008-11-09 14:34 ` Alexander Graf
2008-11-09 14:34 ` Alexander Graf
2008-11-07 6:16 ` Greg KH
2008-11-06 4:32 ` Greg KH
2008-10-22 8:45 ` Yu Zhao
2008-11-06 4:48 ` [PATCH 0/16 v6] PCI: Linux kernel SR-IOV support Greg KH
2008-11-06 4:48 ` Greg KH
2008-11-06 15:40 ` H L
2008-11-06 15:40 ` H L
2008-11-06 15:43 ` Greg KH
2008-11-06 15:43 ` Greg KH
2008-11-06 16:41 ` H L
2008-11-06 16:49 ` Greg KH
2008-11-06 16:49 ` Greg KH
2008-11-06 17:38 ` Fischer, Anna
2008-11-06 18:03 ` Greg KH
2008-11-06 18:03 ` Greg KH
2008-11-06 20:04 ` Fischer, Anna
2008-11-06 20:04 ` Fischer, Anna
2008-11-09 12:44 ` Avi Kivity
2008-11-09 12:44 ` Avi Kivity
2008-11-09 19:25 ` Greg KH
2008-11-09 19:25 ` Greg KH
2008-11-09 19:37 ` Avi Kivity
2008-11-09 19:37 ` Avi Kivity
2008-11-11 6:08 ` Greg KH
2008-11-11 6:08 ` Greg KH
2008-11-11 9:00 ` Avi Kivity
2008-11-11 9:00 ` Avi Kivity
2008-11-06 18:36 ` Matthew Wilcox
2008-11-06 22:38 ` Anthony Liguori
2008-11-06 22:38 ` Anthony Liguori
2008-11-06 22:58 ` Matthew Wilcox
2008-11-07 6:19 ` Greg KH
2008-11-07 6:19 ` Greg KH
2008-11-07 15:17 ` Yu Zhao
2008-11-07 15:17 ` Yu Zhao
2008-11-07 18:48 ` Greg KH
2008-11-08 11:09 ` Fischer, Anna
2008-11-08 11:09 ` Fischer, Anna
2008-11-08 11:09 ` Fischer, Anna
2008-11-08 15:37 ` Leonid Grossman
2008-11-08 15:37 ` Leonid Grossman
2008-11-13 7:49 ` Yu Zhao
2008-11-13 7:49 ` Yu Zhao
2008-11-13 7:49 ` Yu Zhao
2008-11-07 18:48 ` Greg KH
2008-11-09 12:47 ` Avi Kivity
2008-11-09 12:47 ` Avi Kivity
2008-11-06 22:58 ` Matthew Wilcox
2008-11-07 1:52 ` Dong, Eddie
2008-11-07 1:52 ` Dong, Eddie
2008-11-07 2:08 ` Nakajima, Jun
2008-11-07 2:08 ` Nakajima, Jun
2008-11-07 15:21 ` Andi Kleen
2008-11-09 12:53 ` Avi Kivity
2008-11-09 12:53 ` Avi Kivity
2008-11-07 15:21 ` Andi Kleen
2008-11-12 22:41 ` Anthony Liguori
2008-11-12 22:41 ` Anthony Liguori
2008-11-16 16:04 ` Avi Kivity
2008-11-17 1:46 ` Zhao, Yu
2008-11-17 1:46 ` Zhao, Yu
2008-11-16 16:04 ` Avi Kivity
2008-11-07 16:01 ` Yu Zhao
2008-11-07 16:01 ` Yu Zhao
2008-11-06 18:36 ` Matthew Wilcox
2008-11-06 17:38 ` Fischer, Anna
2008-11-06 17:47 ` Matthew Wilcox
2008-11-06 17:47 ` Matthew Wilcox
2008-11-06 17:53 ` Greg KH
2008-11-06 22:24 ` Simon Horman
2008-11-06 22:24 ` Simon Horman
2008-11-06 22:40 ` Anthony Liguori
2008-11-07 6:17 ` Greg KH
2008-11-07 6:17 ` Greg KH
2008-11-07 7:47 ` Zhao, Yu
2008-11-07 7:47 ` Zhao, Yu
2008-11-11 0:18 ` Rusty Russell
2008-11-17 12:01 ` Yu Zhao
2008-11-17 12:01 ` Yu Zhao
2008-11-09 12:58 ` Avi Kivity
2008-11-09 12:58 ` Avi Kivity
2008-11-09 6:41 ` Muli Ben-Yehuda
2008-11-09 6:41 ` Muli Ben-Yehuda [this message]
2008-11-09 13:03 ` Avi Kivity
2008-11-09 13:03 ` Avi Kivity
2008-11-06 22:40 ` Anthony Liguori
2008-11-06 23:54 ` Chris Wright
2008-11-07 6:10 ` Greg KH
2008-11-07 6:10 ` Greg KH
2008-11-07 7:06 ` Zhao, Yu
2008-11-07 7:06 ` Zhao, Yu
2008-11-07 7:29 ` Leonid Grossman
2008-11-07 7:29 ` Leonid Grossman
2008-11-06 23:54 ` Chris Wright
2008-11-06 17:53 ` Greg KH
2008-11-06 18:05 ` H L
2008-11-06 18:05 ` H L
2008-11-06 18:24 ` Greg KH
2008-11-06 18:24 ` Greg KH
2008-11-06 21:35 ` Fischer, Anna
2008-11-07 6:18 ` Greg KH
2008-11-07 6:03 ` Zhao, Yu
2008-11-07 6:03 ` Zhao, Yu
2008-11-06 16:41 ` H L
2008-11-06 16:51 ` git repository for SR-IOV development? H L
2008-11-06 16:51 ` H L
2008-11-06 16:59 ` Greg KH
2008-11-06 16:59 ` Greg KH
2008-11-06 19:58 ` H L
2008-11-06 22:56 ` Simon Horman
2008-11-06 22:56 ` Simon Horman
2008-11-06 22:56 ` Simon Horman
2008-11-07 1:58 ` Greg KH
2008-11-07 13:09 ` Yu Zhao
2008-11-07 13:09 ` Yu Zhao
2008-11-07 1:58 ` Greg KH
2008-11-06 19:58 ` H L
2008-11-06 16:51 ` H L
2008-11-07 5:18 ` [PATCH 0/16 v6] PCI: Linux kernel SR-IOV support Zhao, Yu
2008-11-07 6:07 ` Greg KH
2008-11-07 6:07 ` Greg KH
2008-11-07 5:18 ` Zhao, Yu
[not found] <43F901BD926A4E43B106BF17856F07552F2E8F06@orsmsx508.amr.corp.intel.com>
[not found] ` <9832F13BD22FB94A829F798DA4A82805018C18EE41@pdsmsx503.ccr.corp.intel.com>
[not found] ` <43F901BD926A4E43B106BF17856F07552F2E8F20@orsmsx508.amr.corp.intel.com>
[not found] ` <491D2F23.1080005@intel.com>
2008-11-14 17:40 ` Greg KH
2008-11-14 17:48 ` Rose, Gregory V
2008-11-14 18:39 ` Greg KH
2008-11-14 18:49 ` Ronciak, John
2008-11-14 19:30 ` Greg KH
2008-11-14 18:53 ` Rose, Gregory V
-- strict thread matches above, loose matches on Subject: below --
2008-10-22 8:38 Yu Zhao
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