From: Hui Zhu <teawater@gmail.com> To: mst@redhat.com, david@redhat.com, jasowang@redhat.com, akpm@linux-foundation.org, virtualization@lists.linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, qemu-devel@nongnu.org, virtio-dev@lists.oasis-open.org Cc: Hui Zhu <teawater@gmail.com> Subject: [RFC for qemu v4 0/2] virtio-balloon: Add option cont-pages to set VIRTIO_BALLOON_F_CONT_PAGES Date: Thu, 16 Jul 2020 10:41:53 +0800 [thread overview] Message-ID: <1594867315-8626-4-git-send-email-teawater@gmail.com> (raw) In-Reply-To: <1594867315-8626-1-git-send-email-teawater@gmail.com> Code of current version for Linux and qemu is available in [1] and [2]. Update of this version: 1. Report continuous pages will increase the speed. So added deflate continuous pages. 2. According to the comments from David in [3], added 2 new vqs icvq and dcvq to get continuous pages with format 32 bits pfn and 32 bits size. Following is the introduction of the function. Set option cont-pages to on will open flags VIRTIO_BALLOON_F_CONT_PAGES. qemu will get continuous pages from icvq and dcvq and do madvise MADV_WILLNEED and MADV_DONTNEED with the pages. Opening this flag can bring two benefits: 1. Increase the speed of balloon inflate and deflate. 2. Decrease the splitted THPs number in the host. [1] https://github.com/teawater/linux/tree/balloon_conts [2] https://github.com/teawater/qemu/tree/balloon_conts [3] https://lkml.org/lkml/2020/5/13/1211 Hui Zhu (2): virtio_balloon: Add cont-pages and icvq virtio_balloon: Add dcvq to deflate continuous pages hw/virtio/virtio-balloon.c | 92 +++++++++++++++--------- include/hw/virtio/virtio-balloon.h | 2 include/standard-headers/linux/virtio_balloon.h | 1 3 files changed, 63 insertions(+), 32 deletions(-)
WARNING: multiple messages have this Message-ID (diff)
From: Hui Zhu <teawater@gmail.com> To: mst@redhat.com, david@redhat.com, jasowang@redhat.com, akpm@linux-foundation.org, virtualization@lists.linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, qemu-devel@nongnu.org, virtio-dev@lists.oasis-open.org Cc: Hui Zhu <teawater@gmail.com> Subject: [virtio-dev] [RFC for qemu v4 0/2] virtio-balloon: Add option cont-pages to set VIRTIO_BALLOON_F_CONT_PAGES Date: Thu, 16 Jul 2020 10:41:53 +0800 [thread overview] Message-ID: <1594867315-8626-4-git-send-email-teawater@gmail.com> (raw) In-Reply-To: <1594867315-8626-1-git-send-email-teawater@gmail.com> Code of current version for Linux and qemu is available in [1] and [2]. Update of this version: 1. Report continuous pages will increase the speed. So added deflate continuous pages. 2. According to the comments from David in [3], added 2 new vqs icvq and dcvq to get continuous pages with format 32 bits pfn and 32 bits size. Following is the introduction of the function. Set option cont-pages to on will open flags VIRTIO_BALLOON_F_CONT_PAGES. qemu will get continuous pages from icvq and dcvq and do madvise MADV_WILLNEED and MADV_DONTNEED with the pages. Opening this flag can bring two benefits: 1. Increase the speed of balloon inflate and deflate. 2. Decrease the splitted THPs number in the host. [1] https://github.com/teawater/linux/tree/balloon_conts [2] https://github.com/teawater/qemu/tree/balloon_conts [3] https://lkml.org/lkml/2020/5/13/1211 Hui Zhu (2): virtio_balloon: Add cont-pages and icvq virtio_balloon: Add dcvq to deflate continuous pages hw/virtio/virtio-balloon.c | 92 +++++++++++++++--------- include/hw/virtio/virtio-balloon.h | 2 include/standard-headers/linux/virtio_balloon.h | 1 3 files changed, 63 insertions(+), 32 deletions(-) --------------------------------------------------------------------- To unsubscribe, e-mail: virtio-dev-unsubscribe@lists.oasis-open.org For additional commands, e-mail: virtio-dev-help@lists.oasis-open.org
next prev parent reply other threads:[~2020-07-16 2:42 UTC|newest] Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-07-16 2:41 [RFC for Linux v4 0/2] virtio_balloon: Add VIRTIO_BALLOON_F_CONT_PAGES to report continuous pages Hui Zhu 2020-07-16 2:41 ` [virtio-dev] " Hui Zhu 2020-07-16 2:41 ` [RFC for Linux v4 1/2] virtio_balloon: Add VIRTIO_BALLOON_F_CONT_PAGES and inflate_cont_vq Hui Zhu 2020-07-16 2:41 ` [virtio-dev] " Hui Zhu 2020-07-16 2:41 ` Hui Zhu 2020-07-16 6:43 ` Michael S. Tsirkin 2020-07-16 6:43 ` [virtio-dev] " Michael S. Tsirkin 2020-07-16 6:43 ` Michael S. Tsirkin 2020-07-16 8:25 ` teawater 2020-07-16 8:25 ` [virtio-dev] " teawater 2020-07-16 8:25 ` teawater 2020-07-16 2:41 ` [RFC for Linux v4 2/2] virtio_balloon: Add deflate_cont_vq to deflate continuous pages Hui Zhu 2020-07-16 2:41 ` [virtio-dev] " Hui Zhu 2020-07-16 2:41 ` Hui Zhu 2020-07-16 2:41 ` Hui Zhu [this message] 2020-07-16 2:41 ` [virtio-dev] [RFC for qemu v4 0/2] virtio-balloon: Add option cont-pages to set VIRTIO_BALLOON_F_CONT_PAGES Hui Zhu 2020-07-16 2:41 ` [RFC for qemu v4 1/2] virtio_balloon: Add cont-pages and icvq Hui Zhu 2020-07-16 2:41 ` [virtio-dev] " Hui Zhu 2020-07-16 2:41 ` Hui Zhu 2020-07-16 2:41 ` [RFC for qemu v4 2/2] virtio_balloon: Add dcvq to deflate continuous pages Hui Zhu 2020-07-16 2:41 ` [virtio-dev] " Hui Zhu 2020-07-16 2:41 ` Hui Zhu 2020-07-16 6:39 ` Michael S. Tsirkin 2020-07-16 6:39 ` [virtio-dev] " Michael S. Tsirkin 2020-07-16 6:39 ` Michael S. Tsirkin 2020-07-16 7:32 ` [virtio-dev] " teawater 2020-07-16 7:32 ` teawater 2020-07-16 7:32 ` teawater 2020-07-16 6:38 ` [RFC for Linux v4 0/2] virtio_balloon: Add VIRTIO_BALLOON_F_CONT_PAGES to report " Michael S. Tsirkin 2020-07-16 6:38 ` [virtio-dev] " Michael S. Tsirkin 2020-07-16 6:38 ` Michael S. Tsirkin 2020-07-16 7:01 ` [virtio-dev] " teawater 2020-07-16 7:01 ` teawater 2020-07-16 7:01 ` teawater 2020-07-16 7:01 ` [virtio-dev] " teawater 2020-07-16 10:45 ` Michael S. Tsirkin 2020-07-16 10:45 ` Michael S. Tsirkin 2020-07-16 10:45 ` Michael S. Tsirkin 2020-07-16 10:45 ` [virtio-dev] " Michael S. Tsirkin 2020-07-17 3:52 ` teawater 2020-07-17 3:52 ` teawater 2020-07-17 3:52 ` teawater
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