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From: Stefan Hajnoczi <stefanha@redhat.com>
To: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Cc: qemu-devel@nongnu.org, "Paolo Bonzini" <pbonzini@redhat.com>,
	"Denis V. Lunev" <den@openvz.org>, "Peter Xu" <peterx@redhat.com>,
	"Yanan Wang" <wangyanan55@huawei.com>,
	"Marcel Apfelbaum" <marcel.apfelbaum@gmail.com>,
	"Richard W.M. Jones" <rjones@redhat.com>,
	qemu-block@nongnu.org, "John Snow" <jsnow@redhat.com>,
	integration@gluster.org,
	"Vladimir Sementsov-Ogievskiy" <v.sementsov-og@mail.ru>,
	"David Hildenbrand" <david@redhat.com>,
	"Laurent Vivier" <lvivier@redhat.com>,
	"Markus Armbruster" <armbru@redhat.com>,
	"Raphael Norwitz" <raphael.norwitz@nutanix.com>,
	"Richard Henderson" <richard.henderson@linaro.org>,
	"Fam Zheng" <fam@euphon.net>,
	sgarzare@redhat.com, "Alberto Faria" <afaria@redhat.com>,
	"Kevin Wolf" <kwolf@redhat.com>,
	"Wen Congyang" <wencongyang2@huawei.com>,
	"Eric Blake" <eblake@redhat.com>,
	"Hanna Reitz" <hreitz@redhat.com>,
	"Philippe Mathieu-Daudé" <f4bug@amsat.org>,
	"Eduardo Habkost" <eduardo@habkost.net>,
	"Michael S. Tsirkin" <mst@redhat.com>,
	"Thomas Huth" <thuth@redhat.com>,
	"Jeff Cody" <codyprime@gmail.com>,
	"Xie Changlong" <xiechanglong.d@gmail.com>
Subject: Re: [RFC v4 00/11] blkio: add libblkio BlockDriver
Date: Tue, 23 Aug 2022 16:35:43 -0400	[thread overview]
Message-ID: <YwU6H/tFQkQok96O@fedora> (raw)
In-Reply-To: <15ad1a46-00e5-ccc8-1c7e-f6061bc68c0c@yandex-team.ru>

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On Tue, Aug 23, 2022 at 08:31:03PM +0300, Vladimir Sementsov-Ogievskiy wrote:
> On 8/23/22 01:23, Stefan Hajnoczi wrote:
> > The remainder of the patch series reworks the existing QEMU bdrv_register_buf()
> > API so virtio-blk emulation efficiently map guest RAM for libblkio - some
> > libblkio drivers require that I/O buffer memory is pre-registered (think VFIO,
> > vhost, etc).
> 
> Hi!
> 
> So patches 01-11 are for performance optimization? Don't you have some performance measurements for it?

Good point, I'll gather some data and share it.

Stefan

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  reply	other threads:[~2022-08-23 20:37 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-08-22 22:23 [RFC v4 00/11] blkio: add libblkio BlockDriver Stefan Hajnoczi
2022-08-22 22:23 ` [RFC v4 01/11] blkio: add libblkio block driver Stefan Hajnoczi
2022-08-30  7:30   ` Markus Armbruster
2022-08-30 20:18     ` Stefan Hajnoczi
2022-08-22 22:23 ` [RFC v4 02/11] numa: call ->ram_block_removed() in ram_block_notifer_remove() Stefan Hajnoczi
2022-08-22 22:23 ` [RFC v4 03/11] block: pass size to bdrv_unregister_buf() Stefan Hajnoczi
2022-08-22 22:23 ` [RFC v4 04/11] block: use BdrvRequestFlags type for supported flag fields Stefan Hajnoczi
2022-08-22 22:23 ` [RFC v4 05/11] block: add BDRV_REQ_REGISTERED_BUF request flag Stefan Hajnoczi
2022-08-22 22:23 ` [RFC v4 06/11] block: return errors from bdrv_register_buf() Stefan Hajnoczi
2022-08-22 22:23 ` [RFC v4 07/11] block: add BlockRAMRegistrar Stefan Hajnoczi
2022-08-22 22:23 ` [RFC v4 08/11] exec/cpu-common: add qemu_ram_get_fd() Stefan Hajnoczi
2022-08-22 22:24 ` [RFC v4 09/11] stubs: add qemu_ram_block_from_host() and qemu_ram_get_fd() Stefan Hajnoczi
2022-08-22 22:24 ` [RFC v4 10/11] blkio: implement BDRV_REQ_REGISTERED_BUF optimization Stefan Hajnoczi
2022-08-22 22:24 ` [RFC v4 11/11] virtio-blk: use BDRV_REQ_REGISTERED_BUF optimization hint Stefan Hajnoczi
2022-08-23  8:01   ` David Hildenbrand
2022-08-23 19:22     ` Stefan Hajnoczi
2022-08-25  7:43       ` David Hildenbrand
2022-08-30 20:16         ` Stefan Hajnoczi
2022-09-02  8:06           ` David Hildenbrand
2022-09-05 20:50             ` Stefan Hajnoczi
2022-08-23 17:31 ` [RFC v4 00/11] blkio: add libblkio BlockDriver Vladimir Sementsov-Ogievskiy
2022-08-23 20:35   ` Stefan Hajnoczi [this message]
2022-08-31 19:44   ` Stefan Hajnoczi

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