search for: dequeued

I read the sched/qdiscs code from kernel source ... and I have some questions : When the .enqueue, .dequeue, .drop, .requeue functions are called ? What is the event that triggers them and how often this event apears ( per second ? ) ? When a qdisc is dequeued ( when it''s limit is reached ) ? Thanks _______________________________________________ LARTC mailing list / LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/

...ersion of SFQ that, instead of limiting the number of packets in the queue, limits the number of bytes. In that case the number of packets would not be correct either. I think that HTB (and other classful qdiscs) should count the number of bytes and packets "sent" when they''re dequeued, not when they''re enqueued. It''s an interesting point that, at the moment, I don''t see any way for the classful qdisc to know how many packets and bytes were dropped. However, I think it would be useful to know instead how many were passed to enqueue. Then you''...

...cket for transmission? What is the mechanism or interface? For example if you change the queueing method you don''t have to change the whole Kernel and recompile it so there is an external interface I assume. The HOWTO states in section 9.5.2.1. that ''Packets get enqueued and dequeued at the root qdisc, which is the ony thing that the kernel talks to''. How does it talk to the qdisc? Could I write my own Queue? This may not be the form for this question in which case sorry for the noise. Thanks for any help _______________________________________________ LARTC mail...

...dev_info: balloon device decriptor where we will grab a page from. > * > - * Driver must call it to properly de-allocate a previous enlisted balloon > page > - * before definetively releasing it back to the guest system. > - * This function returns the page address for the recently dequeued page or > - * NULL in the case we find balloon's page list temporarily empty due to > - * compaction isolated pages. > + * Driver must call this to properly dequeue a previously enqueued page "call this function"? > + * before definitively releasing it back to the gue...

From: Wei Wang <wei.w.wang at intel.com> A #GP is reported in the guest when requesting balloon inflation via virtio-balloon. The reason is that the virtio-balloon driver has removed the page from its internal page list (via balloon_page_pop), but balloon_page_enqueue_one also calls "list_del" to do the removal. This is necessary when it's used from balloon_page_enqueue_list,

There is an design problem with the qdisc interface that causes qlen related bugs in netem, tbf, and other qdisc''s that peek at the top of the queue. The problem is that requeue needs to be called from the dequeue function but requeue can fail. If requeue fails, then the calling qdisc can not properly handle the error. If it returns NULL, then the parent''s expectation about qlen

Hi, I''m adding a queuing disc. inside kernel. I am confused that it seems few other qdiscs allocate memory dynamically. Is it invalid to use memory calls like molloc or just a suggest that do not use it often? Thanks for your help. bon ----------------------------------------------------------------- < 每天都 Yahoo!奇摩 > www.yahoo.com.tw

From: Wei Wang <wei.w.wang at intel.com> A #GP is reported in the guest when requesting balloon inflation via virtio-balloon. The reason is that the virtio-balloon driver has removed the page from its internal page list (via balloon_page_pop), but balloon_page_enqueue_one also calls "list_del" to do the removal. This is necessary when it's used from balloon_page_enqueue_list,

Hello, I think the BUG_TRAP() in the htb_dequeue_tree() is wrong. First it checks if the class pointer "cl" is NULL, which is obviously right. But I do not understand why we also check whenever the queue length of the leaf queue is zero "cl->un.leaf.q->q.qlen". I would have put that in the expression of the "if" statements that comes afterwards. A queue

Hi, Does the ''tc'' tool show dequeue statistics? If so what switches does one use to see this. If not which is the best way to see these statistics? Thanks.

Hi all. I''m quite new to the concepts of the "traffic control" framework, and I''ve got a programming-related question. Hopefully someone has the answer... Is it possible, either for the device driver itself or for a userspace program, to get information about how many packets are currently queued for a given network interface? Let''s describe it a little

Hello All Its first time i posting to this mail list :). I have done something (maybe) important. I write new IMQ device driver based from Martin Devera and Patrick McHardy implementation with device EOS support. My current implementation supporting only egress trafic shaping and kernel 2.4.25. For more details, source and examples have look at my page http://hyperfighter.jinak.cz/qos Ill

...release the page. * @b_dev_info: balloon device decriptor where we will grab a page from. * - * Driver must call it to properly de-allocate a previous enlisted balloon page - * before definetively releasing it back to the guest system. - * This function returns the page address for the recently dequeued page or - * NULL in the case we find balloon's page list temporarily empty due to - * compaction isolated pages. + * Driver must call this to properly dequeue a previously enqueued page + * before definitively releasing it back to the guest system. + * + * Caller must perform its own accounting...

...release the page. * @b_dev_info: balloon device decriptor where we will grab a page from. * - * Driver must call it to properly de-allocate a previous enlisted balloon page - * before definetively releasing it back to the guest system. - * This function returns the page address for the recently dequeued page or - * NULL in the case we find balloon's page list temporarily empty due to - * compaction isolated pages. + * Driver must call this function to properly dequeue a previously enqueued page + * before definitively releasing it back to the guest system. + * + * Caller must perform its own a...

From: Wei Wang <wei.w.wang at intel.com> A #GP is reported in the guest when requesting balloon inflation via virtio-balloon. The reason is that the virtio-balloon driver has removed the page from its internal page list (via balloon_page_pop), but balloon_page_enqueue_one also calls "list_del" to do the removal. This is necessary when it's used from balloon_page_enqueue_list,

Hello everyone, We are working on HTB with TC and would like some clarifications from your part. Our example is as follows. We have one HTB root class and two HTB classes attached to it, as in this figure : 1: HTB | | |

I set up a little test to see what the behaviour of (e)sfq was - because I couldn''t work it out from the source :-) . I wanted to see where from a slot the packets got dropped when the queue was full. (e)sfq drops from the longest slot to make space for an incoming packet, so it''s not tail drop as such, but the results show me it does drop from the tail of the slot - which

Signed-off-by: Jason Wang <jasowang at redhat.com> --- include/linux/ptr_ring.h | 65 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 65 insertions(+) diff --git a/include/linux/ptr_ring.h b/include/linux/ptr_ring.h index 6c70444..4771ded 100644 --- a/include/linux/ptr_ring.h +++ b/include/linux/ptr_ring.h @@ -247,6 +247,22 @@ static inline void *__ptr_ring_consume(struct

Hello! On 3/21/2017 7:04 AM, Jason Wang wrote: > Signed-off-by: Jason Wang <jasowang at redhat.com> > --- > include/linux/ptr_ring.h | 65 ++++++++++++++++++++++++++++++++++++++++++++++++ > 1 file changed, 65 insertions(+) > > diff --git a/include/linux/ptr_ring.h b/include/linux/ptr_ring.h > index 6c70444..4771ded 100644 > --- a/include/linux/ptr_ring.h > +++

Hello! On 3/21/2017 7:04 AM, Jason Wang wrote: > Signed-off-by: Jason Wang <jasowang at redhat.com> > --- > include/linux/ptr_ring.h | 65 ++++++++++++++++++++++++++++++++++++++++++++++++ > 1 file changed, 65 insertions(+) > > diff --git a/include/linux/ptr_ring.h b/include/linux/ptr_ring.h > index 6c70444..4771ded 100644 > --- a/include/linux/ptr_ring.h > +++