[Qemu-devel] [PATCH 1/1 V2] Add vhost-pci-blk driver

2018-11-05 Thread Vitaly Mayatskikh 
This driver uses the kernel-mode acceleration for virtio-blk and
allows to get a near bare metal disk performance inside a VM.

Signed-off-by: Vitaly Mayatskikh 
---
 configure |  10 +
 default-configs/virtio.mak|   1 +
 hw/block/Makefile.objs|   1 +
 hw/block/vhost-blk.c  | 429 ++
 hw/virtio/virtio-pci.c|  60 +
 hw/virtio/virtio-pci.h|  19 ++
 include/hw/virtio/vhost-blk.h |  43 
 7 files changed, 563 insertions(+)
 create mode 100644 hw/block/vhost-blk.c
 create mode 100644 include/hw/virtio/vhost-blk.h

diff --git a/configure b/configure
index 46ae1e8c76..787bc780da 100755
--- a/configure
+++ b/configure
@@ -371,6 +371,7 @@ vhost_crypto="no"
 vhost_scsi="no"
 vhost_vsock="no"
 vhost_user=""
+vhost_blk=""
 kvm="no"
 hax="no"
 hvf="no"
@@ -869,6 +870,7 @@ Linux)
   vhost_crypto="yes"
   vhost_scsi="yes"
   vhost_vsock="yes"
+  vhost_blk="yes"
   QEMU_INCLUDES="-I\$(SRC_PATH)/linux-headers -I$(pwd)/linux-headers 
$QEMU_INCLUDES"
   supported_os="yes"
   libudev="yes"
@@ -1263,6 +1265,10 @@ for opt do
   ;;
   --enable-vhost-vsock) vhost_vsock="yes"
   ;;
+  --disable-vhost-blk) vhost_blk="no"
+  ;;
+  --enable-vhost-blk) vhost_blk="yes"
+  ;;
   --disable-opengl) opengl="no"
   ;;
   --enable-opengl) opengl="yes"
@@ -6000,6 +6006,7 @@ echo "vhost-crypto support $vhost_crypto"
 echo "vhost-scsi support $vhost_scsi"
 echo "vhost-vsock support $vhost_vsock"
 echo "vhost-user support $vhost_user"
+echo "vhost-blk support $vhost_blk"
 echo "Trace backends$trace_backends"
 if have_backend "simple"; then
 echo "Trace output file $trace_file-"
@@ -6461,6 +6468,9 @@ fi
 if test "$vhost_user" = "yes" ; then
   echo "CONFIG_VHOST_USER=y" >> $config_host_mak
 fi
+if test "$vhost_blk" = "yes" ; then
+  echo "CONFIG_VHOST_BLK=y" >> $config_host_mak
+fi
 if test "$blobs" = "yes" ; then
   echo "INSTALL_BLOBS=yes" >> $config_host_mak
 fi
diff --git a/default-configs/virtio.mak b/default-configs/virtio.mak
index 1304849018..765c0a2a04 100644
--- a/default-configs/virtio.mak
+++ b/default-configs/virtio.mak
@@ -1,5 +1,6 @@
 CONFIG_VHOST_USER_SCSI=$(call land,$(CONFIG_VHOST_USER),$(CONFIG_LINUX))
 CONFIG_VHOST_USER_BLK=$(call land,$(CONFIG_VHOST_USER),$(CONFIG_LINUX))
+CONFIG_VHOST_BLK=$(CONFIG_LINUX)
 CONFIG_VIRTIO=y
 CONFIG_VIRTIO_9P=y
 CONFIG_VIRTIO_BALLOON=y
diff --git a/hw/block/Makefile.objs b/hw/block/Makefile.objs
index 53ce5751ae..857ce823fc 100644
--- a/hw/block/Makefile.objs
+++ b/hw/block/Makefile.objs
@@ -14,3 +14,4 @@ obj-$(CONFIG_SH4) += tc58128.o
 obj-$(CONFIG_VIRTIO_BLK) += virtio-blk.o
 obj-$(CONFIG_VIRTIO_BLK) += dataplane/
 obj-$(CONFIG_VHOST_USER_BLK) += vhost-user-blk.o
+obj-$(CONFIG_VHOST_BLK) += vhost-blk.o
diff --git a/hw/block/vhost-blk.c b/hw/block/vhost-blk.c
new file mode 100644
index 00..4ca8040ee7
--- /dev/null
+++ b/hw/block/vhost-blk.c
@@ -0,0 +1,429 @@
+/*
+ * vhost-blk host device
+ *
+ * Copyright(C) 2018 IBM Corporation
+ *
+ * Authors:
+ *  Vitaly Mayatskikh 
+ *
+ * Largely based on the "vhost-user-blk.c" implemented by:
+ * Changpeng Liu 
+ *
+ * This work is licensed under the terms of the GNU LGPL, version 2 or later.
+ * See the COPYING.LIB file in the top-level directory.
+ *
+ */
+
+#include "qemu/osdep.h"
+#include "qapi/error.h"
+#include "qemu/error-report.h"
+#include "qemu/cutils.h"
+#include "qom/object.h"
+#include "hw/qdev-core.h"
+#include "hw/virtio/vhost.h"
+#include "hw/virtio/vhost-blk.h"
+#include "hw/virtio/virtio.h"
+#include "hw/virtio/virtio-bus.h"
+#include "hw/virtio/virtio-access.h"
+#include 
+#include 
+
+static const int feature_bits[] = {
+VIRTIO_BLK_F_SIZE_MAX,
+VIRTIO_BLK_F_SEG_MAX,
+VIRTIO_BLK_F_BLK_SIZE,
+VIRTIO_BLK_F_TOPOLOGY,
+VIRTIO_BLK_F_MQ,
+VIRTIO_BLK_F_RO,
+VIRTIO_BLK_F_FLUSH,
+VIRTIO_BLK_F_CONFIG_WCE,
+VIRTIO_F_VERSION_1,
+VIRTIO_RING_F_INDIRECT_DESC,
+VIRTIO_RING_F_EVENT_IDX,
+VIRTIO_F_NOTIFY_ON_EMPTY,
+VHOST_INVALID_FEATURE_BIT
+};
+
+static void vhost_blk_get_config(VirtIODevice *vdev, uint8_t *config)
+{
+VHostBlk *s = VHOST_BLK(vdev);
+memcpy(config, >blkcfg, sizeof(struct virtio_blk_config));
+}
+
+static void vhost_blk_set_config(VirtIODevice *vdev, const uint8_t *config)
+{
+VHostBlk *s = VHOST_BLK(vdev);
+struct virtio_blk_config *blkcfg = (struct virtio_blk_config *)config;
+int ret;
+
+if (blkcfg->wce == s->blkcfg.wce) {
+return;

[Qemu-devel] [PATCH 0/1 V2] Add vhost-pci-blk driver

2018-11-05 Thread Vitaly Mayatskikh 
V2 changes:
- checkpatch style fixes
- correct size detection of disk image placed on a file system

This driver moves virtio-blk host-side processing to kernel (via new
vhost_blk kernel driver). It accelerates virtual disk performance
close to the bare metal levels, especially for parellel loads.

For example, fio numjobs=16 gets 101k randread IOPS using virtio-blk
and 1202k IOPS using vhost-blk, close to 1480k of raw disk performance.

See the IOPS numbers below.

The kernel part if you want to try:
- vhost_blk: https://lkml.org/lkml/2018/11/2/648
- vhost num-queues scalability fix: https://lkml.org/lkml/2018/11/2/550

# fio num-jobs
# A: bare metal over block
# B: bare metal over file
# C: virtio-blk over block
# D: virtio-blk over file
# E: vhost-blk over block
# F: vhost-blk over file
#
#  A B CDE F

1  171k  151k  148k 151k 187k  175k
2  328k  302k  249k 241k 334k  296k
3  479k  437k  179k 174k 464k  404k
4  622k  568k  143k 183k 580k  492k
5  755k  697k  136k 128k 693k  579k
6  887k  808k  131k 120k 782k  640k
7  1004k 926k  126k 131k 863k  693k
8  1099k 1015k 117k 115k 931k  712k
9  1194k 1119k 115k 111k 991k  711k
10 1278k 1207k 109k 114k 1046k 695k
11 1345k 1280k 110k 108k 1091k 663k
12 1411k 1356k 104k 106k 1142k 629k
13 1466k 1423k 106k 106k 1170k 607k
14 1517k 1486k 103k 106k 1179k 589k
15 1552k 1543k 102k 102k 1191k 571k
16 1480k 1506k 101k 102k 1202k 566k

Vitaly Mayatskikh (1):
  Add vhost-pci-blk driver

 configure |  10 +
 default-configs/virtio.mak|   1 +
 hw/block/Makefile.objs|   1 +
 hw/block/vhost-blk.c  | 429 ++
 hw/virtio/virtio-pci.c|  60 +
 hw/virtio/virtio-pci.h|  19 ++
 include/hw/virtio/vhost-blk.h |  43 
 7 files changed, 563 insertions(+)
 create mode 100644 hw/block/vhost-blk.c
 create mode 100644 include/hw/virtio/vhost-blk.h

-- 
2.17.1

[Qemu-devel] [PATCH 1/1 resend] Add vhost-pci-blk driver

2018-11-05 Thread Vitaly Mayatskikh 
This driver uses the kernel-mode acceleration for virtio-blk and
allows to get a near bare metal disk performance inside a VM.

Signed-off-by: Vitaly Mayatskikh 
---
 configure |  10 +
 default-configs/virtio.mak|   1 +
 hw/block/Makefile.objs|   1 +
 hw/block/vhost-blk.c  | 411 ++
 hw/virtio/virtio-pci.c|  60 +
 hw/virtio/virtio-pci.h|  19 ++
 include/hw/virtio/vhost-blk.h |  43 
 7 files changed, 545 insertions(+)
 create mode 100644 hw/block/vhost-blk.c
 create mode 100644 include/hw/virtio/vhost-blk.h

diff --git a/configure b/configure
index 46ae1e8c76..787bc780da 100755
--- a/configure
+++ b/configure
@@ -371,6 +371,7 @@ vhost_crypto="no"
 vhost_scsi="no"
 vhost_vsock="no"
 vhost_user=""
+vhost_blk=""
 kvm="no"
 hax="no"
 hvf="no"
@@ -869,6 +870,7 @@ Linux)
   vhost_crypto="yes"
   vhost_scsi="yes"
   vhost_vsock="yes"
+  vhost_blk="yes"
   QEMU_INCLUDES="-I\$(SRC_PATH)/linux-headers -I$(pwd)/linux-headers 
$QEMU_INCLUDES"
   supported_os="yes"
   libudev="yes"
@@ -1263,6 +1265,10 @@ for opt do
   ;;
   --enable-vhost-vsock) vhost_vsock="yes"
   ;;
+  --disable-vhost-blk) vhost_blk="no"
+  ;;
+  --enable-vhost-blk) vhost_blk="yes"
+  ;;
   --disable-opengl) opengl="no"
   ;;
   --enable-opengl) opengl="yes"
@@ -6000,6 +6006,7 @@ echo "vhost-crypto support $vhost_crypto"
 echo "vhost-scsi support $vhost_scsi"
 echo "vhost-vsock support $vhost_vsock"
 echo "vhost-user support $vhost_user"
+echo "vhost-blk support $vhost_blk"
 echo "Trace backends$trace_backends"
 if have_backend "simple"; then
 echo "Trace output file $trace_file-"
@@ -6461,6 +6468,9 @@ fi
 if test "$vhost_user" = "yes" ; then
   echo "CONFIG_VHOST_USER=y" >> $config_host_mak
 fi
+if test "$vhost_blk" = "yes" ; then
+  echo "CONFIG_VHOST_BLK=y" >> $config_host_mak
+fi
 if test "$blobs" = "yes" ; then
   echo "INSTALL_BLOBS=yes" >> $config_host_mak
 fi
diff --git a/default-configs/virtio.mak b/default-configs/virtio.mak
index 1304849018..765c0a2a04 100644
--- a/default-configs/virtio.mak
+++ b/default-configs/virtio.mak
@@ -1,5 +1,6 @@
 CONFIG_VHOST_USER_SCSI=$(call land,$(CONFIG_VHOST_USER),$(CONFIG_LINUX))
 CONFIG_VHOST_USER_BLK=$(call land,$(CONFIG_VHOST_USER),$(CONFIG_LINUX))
+CONFIG_VHOST_BLK=$(CONFIG_LINUX)
 CONFIG_VIRTIO=y
 CONFIG_VIRTIO_9P=y
 CONFIG_VIRTIO_BALLOON=y
diff --git a/hw/block/Makefile.objs b/hw/block/Makefile.objs
index 53ce5751ae..857ce823fc 100644
--- a/hw/block/Makefile.objs
+++ b/hw/block/Makefile.objs
@@ -14,3 +14,4 @@ obj-$(CONFIG_SH4) += tc58128.o
 obj-$(CONFIG_VIRTIO_BLK) += virtio-blk.o
 obj-$(CONFIG_VIRTIO_BLK) += dataplane/
 obj-$(CONFIG_VHOST_USER_BLK) += vhost-user-blk.o
+obj-$(CONFIG_VHOST_BLK) += vhost-blk.o
diff --git a/hw/block/vhost-blk.c b/hw/block/vhost-blk.c
new file mode 100644
index 00..6d30b3c8fa
--- /dev/null
+++ b/hw/block/vhost-blk.c
@@ -0,0 +1,411 @@
+/*
+ * vhost-blk host device
+ *
+ * Copyright(C) 2018 IBM Corporation
+ *
+ * Authors:
+ *  Vitaly Mayatskikh 
+ *
+ * Largely based on the "vhost-user-blk.c" implemented by:
+ * Changpeng Liu 
+ *
+ * This work is licensed under the terms of the GNU LGPL, version 2 or later.
+ * See the COPYING.LIB file in the top-level directory.
+ *
+ */
+
+#include "qemu/osdep.h"
+#include "qapi/error.h"
+#include "qemu/error-report.h"
+#include "qemu/cutils.h"
+#include "qom/object.h"
+#include "hw/qdev-core.h"
+#include "hw/virtio/vhost.h"
+#include "hw/virtio/vhost-blk.h"
+#include "hw/virtio/virtio.h"
+#include "hw/virtio/virtio-bus.h"
+#include "hw/virtio/virtio-access.h"
+#include 
+#include 
+
+static const int feature_bits[] = {
+VIRTIO_BLK_F_SIZE_MAX,
+VIRTIO_BLK_F_SEG_MAX,
+VIRTIO_BLK_F_BLK_SIZE,
+VIRTIO_BLK_F_TOPOLOGY,
+VIRTIO_BLK_F_MQ,
+VIRTIO_BLK_F_RO,
+VIRTIO_BLK_F_FLUSH,
+VIRTIO_BLK_F_CONFIG_WCE,
+VIRTIO_F_VERSION_1,
+VIRTIO_RING_F_INDIRECT_DESC,
+VIRTIO_RING_F_EVENT_IDX,
+VIRTIO_F_NOTIFY_ON_EMPTY,
+VHOST_INVALID_FEATURE_BIT
+};
+
+static void vhost_blk_get_config(VirtIODevice *vdev, uint8_t *config)
+{
+VHostBlk *s = VHOST_BLK(vdev);
+memcpy(config, >blkcfg, sizeof(struct virtio_blk_config));
+}
+
+static void vhost_blk_set_config(VirtIODevice *vdev, const uint8_t *config)
+{
+VHostBlk *s = VHOST_BLK(vdev);
+struct virtio_blk_config *blkcfg = (struct virtio_blk_config *)config;
+int ret;
+
+if (blkcfg->wce == s->blkcfg.wce) {
+return;

[Qemu-devel] [PATCH 0/1 resend] Add vhost-pci-blk driver

2018-11-05 Thread Vitaly Mayatskikh 
This driver moves virtio-blk host-side processing to kernel (via new
vhost_blk kernel driver). It accelerates virtual disk performance
close to bare metal levels, especially for parellel loads.

For example, fio numjobs=16 gets 101k randread IOPS using virtio-blk
and 1202k IOPS using vhost-blk, close to 1480k of raw disk performance.

See the IOPS numbers below.

The kernel part if you want to try:
- vhost_blk: https://lkml.org/lkml/2018/11/2/648
- vhost num-queues scalability fix: https://lkml.org/lkml/2018/11/2/550

# fio num-jobs
# A: bare metal over block
# B: bare metal over file
# C: virtio-blk over block
# D: virtio-blk over file
# E: vhost-blk over block
# F: vhost-blk over file
#
#  A B CDE F

1  171k  151k  148k 151k 187k  175k
2  328k  302k  249k 241k 334k  296k
3  479k  437k  179k 174k 464k  404k
4  622k  568k  143k 183k 580k  492k
5  755k  697k  136k 128k 693k  579k
6  887k  808k  131k 120k 782k  640k
7  1004k 926k  126k 131k 863k  693k
8  1099k 1015k 117k 115k 931k  712k
9  1194k 1119k 115k 111k 991k  711k
10 1278k 1207k 109k 114k 1046k 695k
11 1345k 1280k 110k 108k 1091k 663k
12 1411k 1356k 104k 106k 1142k 629k
13 1466k 1423k 106k 106k 1170k 607k
14 1517k 1486k 103k 106k 1179k 589k
15 1552k 1543k 102k 102k 1191k 571k
16 1480k 1506k 101k 102k 1202k 566k

Vitaly Mayatskikh (1):
  Add vhost-pci-blk driver

 configure  | 10 +++
 default-configs/virtio.mak |  1 +
 hw/block/Makefile.objs |  1 +
 hw/virtio/virtio-pci.c | 60 ++
 hw/virtio/virtio-pci.h | 19 
 5 files changed, 91 insertions(+)

-- 
2.17.1

[Qemu-devel] [PATCH 1/1] Add vhost-pci-blk driver

2018-11-02 Thread Vitaly Mayatskikh 
This driver uses the kernel-mode acceleration for virtio-blk and
allows to get a near bare metal disk performance inside a VM.

Signed-off-by: Vitaly Mayatskikh 
---
 configure  | 10 +++
 default-configs/virtio.mak |  1 +
 hw/block/Makefile.objs |  1 +
 hw/virtio/virtio-pci.c | 60 ++
 hw/virtio/virtio-pci.h | 19 
 5 files changed, 91 insertions(+)

diff --git a/configure b/configure
index 46ae1e8c76..787bc780da 100755
--- a/configure
+++ b/configure
@@ -371,6 +371,7 @@ vhost_crypto="no"
 vhost_scsi="no"
 vhost_vsock="no"
 vhost_user=""
+vhost_blk=""
 kvm="no"
 hax="no"
 hvf="no"
@@ -869,6 +870,7 @@ Linux)
   vhost_crypto="yes"
   vhost_scsi="yes"
   vhost_vsock="yes"
+  vhost_blk="yes"
   QEMU_INCLUDES="-I\$(SRC_PATH)/linux-headers -I$(pwd)/linux-headers 
$QEMU_INCLUDES"
   supported_os="yes"
   libudev="yes"
@@ -1263,6 +1265,10 @@ for opt do
   ;;
   --enable-vhost-vsock) vhost_vsock="yes"
   ;;
+  --disable-vhost-blk) vhost_blk="no"
+  ;;
+  --enable-vhost-blk) vhost_blk="yes"
+  ;;
   --disable-opengl) opengl="no"
   ;;
   --enable-opengl) opengl="yes"
@@ -6000,6 +6006,7 @@ echo "vhost-crypto support $vhost_crypto"
 echo "vhost-scsi support $vhost_scsi"
 echo "vhost-vsock support $vhost_vsock"
 echo "vhost-user support $vhost_user"
+echo "vhost-blk support $vhost_blk"
 echo "Trace backends$trace_backends"
 if have_backend "simple"; then
 echo "Trace output file $trace_file-"
@@ -6461,6 +6468,9 @@ fi
 if test "$vhost_user" = "yes" ; then
   echo "CONFIG_VHOST_USER=y" >> $config_host_mak
 fi
+if test "$vhost_blk" = "yes" ; then
+  echo "CONFIG_VHOST_BLK=y" >> $config_host_mak
+fi
 if test "$blobs" = "yes" ; then
   echo "INSTALL_BLOBS=yes" >> $config_host_mak
 fi
diff --git a/default-configs/virtio.mak b/default-configs/virtio.mak
index 1304849018..765c0a2a04 100644
--- a/default-configs/virtio.mak
+++ b/default-configs/virtio.mak
@@ -1,5 +1,6 @@
 CONFIG_VHOST_USER_SCSI=$(call land,$(CONFIG_VHOST_USER),$(CONFIG_LINUX))
 CONFIG_VHOST_USER_BLK=$(call land,$(CONFIG_VHOST_USER),$(CONFIG_LINUX))
+CONFIG_VHOST_BLK=$(CONFIG_LINUX)
 CONFIG_VIRTIO=y
 CONFIG_VIRTIO_9P=y
 CONFIG_VIRTIO_BALLOON=y
diff --git a/hw/block/Makefile.objs b/hw/block/Makefile.objs
index 53ce5751ae..857ce823fc 100644
--- a/hw/block/Makefile.objs
+++ b/hw/block/Makefile.objs
@@ -14,3 +14,4 @@ obj-$(CONFIG_SH4) += tc58128.o
 obj-$(CONFIG_VIRTIO_BLK) += virtio-blk.o
 obj-$(CONFIG_VIRTIO_BLK) += dataplane/
 obj-$(CONFIG_VHOST_USER_BLK) += vhost-user-blk.o
+obj-$(CONFIG_VHOST_BLK) += vhost-blk.o
diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c
index a954799267..ec00b54424 100644
--- a/hw/virtio/virtio-pci.c
+++ b/hw/virtio/virtio-pci.c
@@ -2060,6 +2060,63 @@ static const TypeInfo vhost_user_blk_pci_info = {
 };
 #endif
 
+#ifdef CONFIG_VHOST_BLK
+/* vhost-blk */
+
+static Property vhost_blk_pci_properties[] = {
+DEFINE_PROP_UINT32("class", VirtIOPCIProxy, class_code, 0),
+DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors,
+   DEV_NVECTORS_UNSPECIFIED),
+DEFINE_PROP_END_OF_LIST(),
+};
+
+static void vhost_blk_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
+{
+VHostBlkPCI *dev = VHOST_BLK_PCI(vpci_dev);
+DeviceState *vdev = DEVICE(>vdev);
+
+if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) {
+vpci_dev->nvectors = dev->vdev.num_queues + 1;
+}
+
+qdev_set_parent_bus(vdev, BUS(_dev->bus));
+object_property_set_bool(OBJECT(vdev), true, "realized", errp);
+}
+
+static void vhost_blk_pci_class_init(ObjectClass *klass, void *data)
+{
+DeviceClass *dc = DEVICE_CLASS(klass);
+VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
+PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
+
+set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
+dc->props = vhost_blk_pci_properties;
+k->realize = vhost_blk_pci_realize;
+pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
+pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_BLOCK;
+pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
+pcidev_k->class_id = PCI_CLASS_STORAGE_SCSI;
+}
+
+static void vhost_blk_pci_instance_init(Object *obj)
+{
+VHostBlkPCI *dev = VHOST_BLK_PCI(obj);
+
+virtio_instance_init_common(obj, >vdev, sizeof(dev->vdev),
+TYPE_VHOST_BLK);
+object_property_add_alias(obj, "bootindex", OBJECT(>vdev),
+  "bootindex", _abort);
+}
+
+static const TypeInfo vhost_blk

[Qemu-devel] [PATCH 0/1] Add vhost-pci-blk driver

2018-11-02 Thread Vitaly Mayatskikh 
This driver moves virtio-blk host-side processing to kernel (via new
vhost_blk kernel driver). It accelerates virtual disk performance
close to bare metal levels, especially for parellel loads.

For example, fio numjobs=16 gets 101k randread IOPS using virtio-blk
and 1202k IOPS using vhost-blk, close to 1480k of raw disk performance.

See the IOPS numbers below.

The kernel part if you want to try:
- vhost_blk: https://lkml.org/lkml/2018/11/2/648
- vhost num-queues scalability fix: https://lkml.org/lkml/2018/11/2/550

# fio num-jobs
# A: bare metal over block
# B: bare metal over file
# C: virtio-blk over block
# D: virtio-blk over file
# E: vhost-blk over block
# F: vhost-blk over file
#
#  A B CDE F

1  171k  151k  148k 151k 187k  175k
2  328k  302k  249k 241k 334k  296k
3  479k  437k  179k 174k 464k  404k
4  622k  568k  143k 183k 580k  492k
5  755k  697k  136k 128k 693k  579k
6  887k  808k  131k 120k 782k  640k
7  1004k 926k  126k 131k 863k  693k
8  1099k 1015k 117k 115k 931k  712k
9  1194k 1119k 115k 111k 991k  711k
10 1278k 1207k 109k 114k 1046k 695k
11 1345k 1280k 110k 108k 1091k 663k
12 1411k 1356k 104k 106k 1142k 629k
13 1466k 1423k 106k 106k 1170k 607k
14 1517k 1486k 103k 106k 1179k 589k
15 1552k 1543k 102k 102k 1191k 571k
16 1480k 1506k 101k 102k 1202k 566k

Vitaly Mayatskikh (1):
  Add vhost-pci-blk driver

 configure  | 10 +++
 default-configs/virtio.mak |  1 +
 hw/block/Makefile.objs |  1 +
 hw/virtio/virtio-pci.c | 60 ++
 hw/virtio/virtio-pci.h | 19 
 5 files changed, 91 insertions(+)

-- 
2.17.1