search for: get_a_page

The following series applies to net-next. The following series changes the low memory paths in virtio_net to not disable NAPI while waiting in the allocator in the slow path. It attempts to rectify some performance problems we've seen where the network performance drops significantly when memory is low. The working theory is that the disabling of NAPI while allocations are occuring in the

The following series applies to net-next. The following series changes the low memory paths in virtio_net to not disable NAPI while waiting in the allocator in the slow path. It attempts to rectify some performance problems we've seen where the network performance drops significantly when memory is low. The working theory is that the disabling of NAPI while allocations are occuring in the

Hi all: This series is an update version of multiqueue virtio-net driver based on Krishna Kumar's work to let virtio-net use multiple rx/tx queues to do the packets reception and transmission. Please review and comments. A protype implementation of qemu-kvm support could by found in git://github.com/jasowang/qemu-kvm-mq.git. To start a guest with two queues, you could specify the queues

Hi all: This series is an update version of multiqueue virtio-net driver based on Krishna Kumar's work to let virtio-net use multiple rx/tx queues to do the packets reception and transmission. Please review and comments. A protype implementation of qemu-kvm support could by found in git://github.com/jasowang/qemu-kvm-mq.git. To start a guest with two queues, you could specify the queues

Hi all: This series is an update version of multiqueue virtio-net driver based on Krishna Kumar's work to let virtio-net use multiple rx/tx queues to do the packets reception and transmission. Please review and comments. A protype implementation of qemu-kvm support could by found in git://github.com/jasowang/qemu-kvm-mq.git. To start a guest with two queues, you could specify the queues

Hi all: This series is an update version of multiqueue virtio-net driver based on Krishna Kumar's work to let virtio-net use multiple rx/tx queues to do the packets reception and transmission. Please review and comments. A protype implementation of qemu-kvm support could by found in git://github.com/jasowang/qemu-kvm-mq.git. To start a guest with two queues, you could specify the queues

Hi all: This series is an update version of multiqueue virtio-net driver based on Krishna Kumar's work to let virtio-net use multiple rx/tx queues to do the packets reception and transmission. Please review and comments. A protype implementation of qemu-kvm support could by found in git://github.com/jasowang/qemu-kvm-mq.git. To start a guest with two queues, you could specify the queues

Hi all: This series is an update version of multiqueue virtio-net driver based on Krishna Kumar's work to let virtio-net use multiple rx/tx queues to do the packets reception and transmission. Please review and comments. A protype implementation of qemu-kvm support could by found in git://github.com/jasowang/qemu-kvm-mq.git. To start a guest with two queues, you could specify the queues

Hi all: This series is an update version (hope the final version) of multiqueue (VIRTIO_NET_F_MQ) support in virtio-net driver. All previous comments were addressed, the work were based on Krishna Kumar's work to let virtio-net use multiple rx/tx queues to do the packets reception and transmission. Performance test show the aggregate latency were increased greately but may get some regression

Hi all: This series is an update version (hope the final version) of multiqueue (VIRTIO_NET_F_MQ) support in virtio-net driver. All previous comments were addressed, the work were based on Krishna Kumar's work to let virtio-net use multiple rx/tx queues to do the packets reception and transmission. Performance test show the aggregate latency were increased greately but may get some regression

Hi all: This series is an update version of multiqueue virtio-net driver based on Krishna Kumar's work to let virtio-net use multiple rx/tx queues to do the packets reception and transmission. Please review and comments. Changes from v5: - Align the implementation with the RFC spec update v4 - Switch the mode between single mode and multiqueue mode without reset - Remove the 256 limitation

Hi all: This series is an update version of multiqueue virtio-net driver based on Krishna Kumar's work to let virtio-net use multiple rx/tx queues to do the packets reception and transmission. Please review and comments. Changes from v5: - Align the implementation with the RFC spec update v4 - Switch the mode between single mode and multiqueue mode without reset - Remove the 256 limitation

Hello All: This series is an update version of multiqueue virtio-net driver based on Krishna Kumar's work to let virtio-net use multiple rx/tx queues to do the packets reception and transmission. Please review and comments. Test Environment: - Intel(R) Xeon(R) CPU E5620 @ 2.40GHz, 8 cores 2 numa nodes - Two directed connected 82599 Test Summary: - Highlights: huge improvements on TCP_RR

Hello All: This series is an update version of multiqueue virtio-net driver based on Krishna Kumar's work to let virtio-net use multiple rx/tx queues to do the packets reception and transmission. Please review and comments. Test Environment: - Intel(R) Xeon(R) CPU E5620 @ 2.40GHz, 8 cores 2 numa nodes - Two directed connected 82599 Test Summary: - Highlights: huge improvements on TCP_RR

...rivers/net/virtio_net.c | 20 ++++++++++++++++---- 1 file changed, 16 insertions(+), 4 deletions(-) diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index a9bf178..8dea411 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -219,13 +219,15 @@ static struct page *get_a_page(struct receive_queue *rq, gfp_t gfp_mask) return p; } -static unsigned int free_old_xmit_skbs(struct send_queue *sq, int budget) +static unsigned int free_old_xmit_skbs(struct netdev_queue *txq, + struct send_queue *sq, int budget) { struct sk_buff *skb; unsigned int len; stru...

...rivers/net/virtio_net.c | 20 ++++++++++++++++---- 1 file changed, 16 insertions(+), 4 deletions(-) diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index a9bf178..8dea411 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -219,13 +219,15 @@ static struct page *get_a_page(struct receive_queue *rq, gfp_t gfp_mask) return p; } -static unsigned int free_old_xmit_skbs(struct send_queue *sq, int budget) +static unsigned int free_old_xmit_skbs(struct netdev_queue *txq, + struct send_queue *sq, int budget) { struct sk_buff *skb; unsigned int len; stru...

...t; > /* Name of the send queue: output.$index */ >> > char name[40]; >> > + >> > + struct napi_struct napi; >> > }; >> > >> > /* Internal representation of a receive virtqueue */ >> > @@ -217,15 +219,40 @@ static struct page *get_a_page(struct receive_queue *rq, gfp_t gfp_mask) >> > return p; >> > } >> > >> > +static int free_old_xmit_skbs(struct send_queue *sq, int budget) >> > +{ >> > + struct sk_buff *skb; >> > + unsigned int len; >> > + struct virtnet...

...t; > /* Name of the send queue: output.$index */ >> > char name[40]; >> > + >> > + struct napi_struct napi; >> > }; >> > >> > /* Internal representation of a receive virtqueue */ >> > @@ -217,15 +219,40 @@ static struct page *get_a_page(struct receive_queue *rq, gfp_t gfp_mask) >> > return p; >> > } >> > >> > +static int free_old_xmit_skbs(struct send_queue *sq, int budget) >> > +{ >> > + struct sk_buff *skb; >> > + unsigned int len; >> > + struct virtnet...

...644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -72,6 +72,8 @@ struct send_queue { /* Name of the send queue: output.$index */ char name[40]; + + struct napi_struct napi; }; /* Internal representation of a receive virtqueue */ @@ -217,15 +219,40 @@ static struct page *get_a_page(struct receive_queue *rq, gfp_t gfp_mask) return p; } +static int free_old_xmit_skbs(struct send_queue *sq, int budget) +{ + struct sk_buff *skb; + unsigned int len; + struct virtnet_info *vi = sq->vq->vdev->priv; + struct virtnet_stats *stats = this_cpu_ptr(vi->stats); + int sent...

...644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -72,6 +72,8 @@ struct send_queue { /* Name of the send queue: output.$index */ char name[40]; + + struct napi_struct napi; }; /* Internal representation of a receive virtqueue */ @@ -217,15 +219,40 @@ static struct page *get_a_page(struct receive_queue *rq, gfp_t gfp_mask) return p; } +static int free_old_xmit_skbs(struct send_queue *sq, int budget) +{ + struct sk_buff *skb; + unsigned int len; + struct virtnet_info *vi = sq->vq->vdev->priv; + struct virtnet_stats *stats = this_cpu_ptr(vi->stats); + int sent...