On 2017年04月25日 00:40, Michael S. Tsirkin wrote:
On Fri, Apr 21, 2017 at 10:50:12AM -0400, Willem de Bruijn wrote:
Maybe I was wrong, but according to Michael's comment it looks like he
want
check affinity_hint_set just for speculative tx polling on rx napi
instead
of disabling it at all.
And
On Mon, Apr 24, 2017 at 1:14 PM, Michael S. Tsirkin wrote:
> On Mon, Apr 24, 2017 at 01:05:45PM -0400, Willem de Bruijn wrote:
>> On Mon, Apr 24, 2017 at 12:40 PM, Michael S. Tsirkin wrote:
>> > On Fri, Apr 21, 2017 at 10:50:12AM -0400, Willem de Bruijn wrote:
>> >> >>> Maybe I was wrong, but acc
On Mon, Apr 24, 2017 at 12:40 PM, Michael S. Tsirkin wrote:
> On Fri, Apr 21, 2017 at 10:50:12AM -0400, Willem de Bruijn wrote:
>> >>> Maybe I was wrong, but according to Michael's comment it looks like he
>> >>> want
>> >>> check affinity_hint_set just for speculative tx polling on rx napi
>> >>>
On Thu, Apr 20, 2017 at 12:02 PM, Willem de Bruijn
wrote:
>>> static int xmit_skb(struct send_queue *sq, struct sk_buff *skb)
>>> {
>>> struct virtio_net_hdr_mrg_rxbuf *hdr;
>>> @@ -1130,9 +1172,11 @@ static netdev_tx_t start_xmit(struct sk_buff *skb,
>>> struct net_device *dev)
>>>
>>> Maybe I was wrong, but according to Michael's comment it looks like he
>>> want
>>> check affinity_hint_set just for speculative tx polling on rx napi
>>> instead
>>> of disabling it at all.
>>>
>>> And I'm not convinced this is really needed, driver only provide affinity
>>> hint instead of af
>> static int xmit_skb(struct send_queue *sq, struct sk_buff *skb)
>> {
>> struct virtio_net_hdr_mrg_rxbuf *hdr;
>> @@ -1130,9 +1172,11 @@ static netdev_tx_t start_xmit(struct sk_buff *skb,
>> struct net_device *dev)
>> int err;
>> struct netdev_queue *txq = netdev_get_t
On Thu, Apr 20, 2017 at 2:27 AM, Jason Wang wrote:
>
>
> On 2017年04月19日 04:21, Willem de Bruijn wrote:
>>
>> +static void virtnet_napi_tx_enable(struct virtnet_info *vi,
>> + struct virtqueue *vq,
>> + struct napi_struct *napi)
>> +
From: Willem de Bruijn
Convert virtio-net to a standard napi tx completion path. This enables
better TCP pacing using TCP small queues and increases single stream
throughput.
The virtio-net driver currently cleans tx descriptors on transmission
of new packets in ndo_start_xmit. Latency depends o
On Mon, Apr 24, 2017 at 01:05:45PM -0400, Willem de Bruijn wrote:
> On Mon, Apr 24, 2017 at 12:40 PM, Michael S. Tsirkin wrote:
> > On Fri, Apr 21, 2017 at 10:50:12AM -0400, Willem de Bruijn wrote:
> >> >>> Maybe I was wrong, but according to Michael's comment it looks like he
> >> >>> want
> >> >
On Fri, Apr 21, 2017 at 10:50:12AM -0400, Willem de Bruijn wrote:
> >>> Maybe I was wrong, but according to Michael's comment it looks like he
> >>> want
> >>> check affinity_hint_set just for speculative tx polling on rx napi
> >>> instead
> >>> of disabling it at all.
> >>>
> >>> And I'm not conv
On 2017年04月20日 21:58, Willem de Bruijn wrote:
On Thu, Apr 20, 2017 at 2:27 AM, Jason Wang wrote:
On 2017年04月19日 04:21, Willem de Bruijn wrote:
+static void virtnet_napi_tx_enable(struct virtnet_info *vi,
+ struct virtqueue *vq,
+
On 2017年04月19日 04:21, Willem de Bruijn wrote:
+static void virtnet_napi_tx_enable(struct virtnet_info *vi,
+ struct virtqueue *vq,
+ struct napi_struct *napi)
+{
+ if (!napi->weight)
+ return;
+
+ if (!v
On 2017年04月19日 04:21, Willem de Bruijn wrote:
From: Willem de Bruijn
Convert virtio-net to a standard napi tx completion path. This enables
better TCP pacing using TCP small queues and increases single stream
throughput.
The virtio-net driver currently cleans tx descriptors on transmission
o
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