similar to: [PULL] virtio: fixes, tests

On Wed, Jan 27, 2016 at 11:57:52AM -0800, Linus Torvalds wrote: > On Wed, Jan 27, 2016 at 11:12 AM, Michael S. Tsirkin <mst at redhat.com> wrote: > > > > arch/sh/include/asm/barrier.h | 1 - > > tools/virtio/asm/barrier.h | 22 +- > > tools/virtio/linux/compiler.h | 9 + > > tools/virtio/linux/kernel.h |

On Wed, Jan 27, 2016 at 11:57:52AM -0800, Linus Torvalds wrote: > On Wed, Jan 27, 2016 at 11:12 AM, Michael S. Tsirkin <mst at redhat.com> wrote: > > > > arch/sh/include/asm/barrier.h | 1 - > > tools/virtio/asm/barrier.h | 22 +- > > tools/virtio/linux/compiler.h | 9 + > > tools/virtio/linux/kernel.h |

On Wed, Jan 27, 2016 at 11:12 AM, Michael S. Tsirkin <mst at redhat.com> wrote: > > arch/sh/include/asm/barrier.h | 1 - > tools/virtio/asm/barrier.h | 22 +- > tools/virtio/linux/compiler.h | 9 + > tools/virtio/linux/kernel.h | 1 + > tools/virtio/ringtest/main.h | 119 ++++++++++ >

This adds micro-benchmarks useful for tuning virtio ring layouts. Three layouts are currently implemented: - virtio 0.9 compatible one - an experimental extension bypassing the ring index, polling ring itself instead - an experimental extension bypassing avail and used ring completely Typical use: sh run-on-all.sh perf stat -r 10 --log-fd 1 -- ./ring It doesn't depend on the kernel

This adds micro-benchmarks useful for tuning virtio ring layouts. Three layouts are currently implemented: - virtio 0.9 compatible one - an experimental extension bypassing the ring index, polling ring itself instead - an experimental extension bypassing avail and used ring completely Typical use: sh run-on-all.sh perf stat -r 10 --log-fd 1 -- ./ring It doesn't depend on the kernel

skips ring accesses but drops out of order support At high level this follows alf design https://github.com/netoptimizer/prototype-kernel/blob/master/kernel/lib/alf_queue.c but on most (single-threaded) benchmarks this seems to be slower than the layout without index use. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- tools/virtio/ringtest/virtio_ring_0_9.c | 49

skips ring accesses but drops out of order support At high level this follows alf design https://github.com/netoptimizer/prototype-kernel/blob/master/kernel/lib/alf_queue.c but on most (single-threaded) benchmarks this seems to be slower than the layout without index use. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- tools/virtio/ringtest/virtio_ring_0_9.c | 49

Add ringtest based unit test for ptr ring. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- tools/virtio/ringtest/ptr_ring.c | 192 +++++++++++++++++++++++++++++++++++++++ tools/virtio/ringtest/Makefile | 5 +- 2 files changed, 196 insertions(+), 1 deletion(-) create mode 100644 tools/virtio/ringtest/ptr_ring.c diff --git a/tools/virtio/ringtest/ptr_ring.c

Add ringtest based unit test for ptr ring. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- tools/virtio/ringtest/ptr_ring.c | 192 +++++++++++++++++++++++++++++++++++++++ tools/virtio/ringtest/Makefile | 5 +- 2 files changed, 196 insertions(+), 1 deletion(-) create mode 100644 tools/virtio/ringtest/ptr_ring.c diff --git a/tools/virtio/ringtest/ptr_ring.c

Useful to measure testing framework overhead. Cc: Jesper Dangaard Brouer <brouer at redhat.com> Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- tools/virtio/ringtest/noring.c | 69 ++++++++++++++++++++++++++++++++++++++++++ tools/virtio/ringtest/Makefile | 4 ++- 2 files changed, 72 insertions(+), 1 deletion(-) create mode 100644 tools/virtio/ringtest/noring.c diff --git

Useful to measure testing framework overhead. Cc: Jesper Dangaard Brouer <brouer at redhat.com> Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- tools/virtio/ringtest/noring.c | 69 ++++++++++++++++++++++++++++++++++++++++++ tools/virtio/ringtest/Makefile | 4 ++- 2 files changed, 72 insertions(+), 1 deletion(-) create mode 100644 tools/virtio/ringtest/noring.c diff --git

last kicked event index must be updated unconditionally: even if we don't need to kick, we do not want to re-check the same entry for events. Reported-by: Cornelia Huck <cohuck at redhat.com> Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- tools/virtio/ringtest/virtio_ring_0_9.c | 24 ++++++++++++++---------- 1 file changed, 14 insertions(+), 10 deletions(-) diff --git

last kicked event index must be updated unconditionally: even if we don't need to kick, we do not want to re-check the same entry for events. Reported-by: Cornelia Huck <cohuck at redhat.com> Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- tools/virtio/ringtest/virtio_ring_0_9.c | 24 ++++++++++++++---------- 1 file changed, 14 insertions(+), 10 deletions(-) diff --git

On Wed, 24 May 2023 20:36:12 +0800, Rong Tao <rtoax at foxmail.com> wrote: > From: Rong Tao <rongtao at cestc.cn> > > Ignore executions for ringtest. > > Signed-off-by: Rong Tao <rongtao at cestc.cn> Is this the resend mail? Or a new version? I replyed to your last mail. THanks. > --- > tools/virtio/ringtest/.gitignore | 7 +++++++ > 1 file changed,

last kicked event index must be updated unconditionally: even if we don't need to kick, we do not want to re-check the same entry for events. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- tools/virtio/ringtest/ring.c | 24 +++++++++++++++--------- 1 file changed, 15 insertions(+), 9 deletions(-) diff --git a/tools/virtio/ringtest/ring.c b/tools/virtio/ringtest/ring.c index

last kicked event index must be updated unconditionally: even if we don't need to kick, we do not want to re-check the same entry for events. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- tools/virtio/ringtest/ring.c | 24 +++++++++++++++--------- 1 file changed, 15 insertions(+), 9 deletions(-) diff --git a/tools/virtio/ringtest/ring.c b/tools/virtio/ringtest/ring.c index

The following changes since commit d8a5b80568a9cb66810e75b182018e9edb68e8ff: Linux 4.15 (2018-01-28 13:20:33 -0800) are available in the Git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git tags/for_linus for you to fetch changes up to d25cc43c6775bff6b8e3dad97c747954b805e421: vhost: don't hold onto file pointer for VHOST_SET_LOG_FD (2018-02-01 16:26:47

The following changes since commit a57cb1c1d7974c62a5c80f7869e35b492ace12cd: Merge branch 'akpm' (patches from Andrew) (2016-12-14 17:25:18 -0800) are available in the git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git tags/for_linus for you to fetch changes up to 6bdf1e0efb04a1716373646cb6f35b73addca492: Makefile: drop -D__CHECK_ENDIAN__ from cflags

The following changes since commit a57cb1c1d7974c62a5c80f7869e35b492ace12cd: Merge branch 'akpm' (patches from Andrew) (2016-12-14 17:25:18 -0800) are available in the git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git tags/for_linus for you to fetch changes up to 6bdf1e0efb04a1716373646cb6f35b73addca492: Makefile: drop -D__CHECK_ENDIAN__ from cflags

The following changes since commit a909d3e636995ba7c349e2ca5dbb528154d4ac30: Linux 4.9-rc3 (2016-10-29 13:52:02 -0700) are available in the git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git tags/for_linus for you to fetch changes up to 75bfa81bf0897ba87f1e1b9b576a07536029b86a: virtio_ring: mark vring_dma_dev inline (2016-10-31 00:40:08 +0200)