On Sun, Jan 22, 2017 at 7:50 PM, Tom Herbert wrote:
> On Sat, Jan 21, 2017 at 12:31 PM, Saeed Mahameed
> wrote:
>> On Sat, Jan 21, 2017 at 9:12 PM, kernel netdev wrote:
>>>
>>>
>>> Den 21. jan. 2017 7.10 PM skrev "Tom Herbert" :
>>>
>>> On Thu, Jan 19, 2017 at 11:14 AM, Saeed Mahameed
>>> wrote
On Mon, Jan 23, 2017 at 11:14 AM, Jesper Dangaard Brouer
wrote:
> On Sat, 21 Jan 2017 11:26:49 -0800
> Eric Dumazet wrote:
>
>> > My previous measurements show approx 20℅ speedup on a UDP test with
>> > delivery to remote CPU.
>> >
>> I find this a bit strange. When you have time (ie not while dr
From: Jesper Dangaard Brouer
Date: Mon, 23 Jan 2017 09:39:40 +0100
> BUT there are other advantages of using a guaranteed recycle pool
> facility (like the page_pool). Namely, (1) DMA-overhead: keeping page
> DMA mapped to counter DMA+IOMMU overhead, (2) RX-zero-copy: opens up
> for a software m
On Sat, 21 Jan 2017 11:26:49 -0800
Eric Dumazet wrote:
> > My previous measurements show approx 20℅ speedup on a UDP test with
> > delivery to remote CPU.
> >
> I find this a bit strange. When you have time (ie not while driving your
> car or during week end) please give more details, for exam
On Sat, 21 Jan 2017 22:31:26 +0200 Saeed Mahameed
wrote:
> > My previous measurements show approx 20℅ speedup on a UDP test with delivery
> > to remote CPU.
> >
> > Removing the cache would of cause be a good usecase for speeding up the page
> > allocator (PCP). Which Mel Gorman and me are work
On Sat, Jan 21, 2017 at 11:12 AM, kernel netdev wrote:
>
>
> Den 21. jan. 2017 7.10 PM skrev "Tom Herbert" :
>
> On Thu, Jan 19, 2017 at 11:14 AM, Saeed Mahameed
> wrote:
>> On Thu, Jan 19, 2017 at 9:03 AM, Eric Dumazet
>> wrote:
>>> From: Eric Dumazet
>>>
>>> A driver using dev_alloc_page() mu
On Sat, Jan 21, 2017 at 12:31 PM, Saeed Mahameed
wrote:
> On Sat, Jan 21, 2017 at 9:12 PM, kernel netdev wrote:
>>
>>
>> Den 21. jan. 2017 7.10 PM skrev "Tom Herbert" :
>>
>> On Thu, Jan 19, 2017 at 11:14 AM, Saeed Mahameed
>> wrote:
>>> On Thu, Jan 19, 2017 at 9:03 AM, Eric Dumazet
>>> wrote:
On Sat, Jan 21, 2017 at 9:12 PM, kernel netdev wrote:
>
>
> Den 21. jan. 2017 7.10 PM skrev "Tom Herbert" :
>
> On Thu, Jan 19, 2017 at 11:14 AM, Saeed Mahameed
> wrote:
>> On Thu, Jan 19, 2017 at 9:03 AM, Eric Dumazet
>> wrote:
>>> From: Eric Dumazet
>>>
>>> A driver using dev_alloc_page() mus
On Sat, 2017-01-21 at 20:12 +0100, kernel netdev wrote:
>
>
> Den 21. jan. 2017 7.10 PM skrev "Tom Herbert" :
> On Thu, Jan 19, 2017 at 11:14 AM, Saeed Mahameed
> wrote:
> > On Thu, Jan 19, 2017 at 9:03 AM, Eric Dumazet
> wrote:
> >> From: Eric Dumazet
>
On Thu, Jan 19, 2017 at 11:14 AM, Saeed Mahameed
wrote:
> On Thu, Jan 19, 2017 at 9:03 AM, Eric Dumazet wrote:
>> From: Eric Dumazet
>>
>> A driver using dev_alloc_page() must not reuse a page allocated from
>> emergency memory reserve.
>>
>> Otherwise all packets using this page will be immedia
From: Eric Dumazet
Date: Wed, 18 Jan 2017 23:03:08 -0800
> From: Eric Dumazet
>
> A driver using dev_alloc_page() must not reuse a page allocated from
> emergency memory reserve.
>
> Otherwise all packets using this page will be immediately dropped,
> unless for very specific sockets having SO
On Thu, Jan 19, 2017 at 9:03 AM, Eric Dumazet wrote:
> From: Eric Dumazet
>
> A driver using dev_alloc_page() must not reuse a page allocated from
> emergency memory reserve.
>
> Otherwise all packets using this page will be immediately dropped,
> unless for very specific sockets having SOCK_MEMA
On Thu, Jan 19, 2017 at 9:25 PM, Eric Dumazet wrote:
> On Thu, 2017-01-19 at 21:14 +0200, Saeed Mahameed wrote:
>> On Thu, Jan 19, 2017 at 9:03 AM, Eric Dumazet wrote:
>> > From: Eric Dumazet
>> >
>> > A driver using dev_alloc_page() must not reuse a page allocated from
>> > emergency memory res
On Thu, 2017-01-19 at 21:14 +0200, Saeed Mahameed wrote:
> On Thu, Jan 19, 2017 at 9:03 AM, Eric Dumazet wrote:
> > From: Eric Dumazet
> >
> > A driver using dev_alloc_page() must not reuse a page allocated from
> > emergency memory reserve.
> >
> > Otherwise all packets using this page will be i
On Thu, Jan 19, 2017 at 9:03 AM, Eric Dumazet wrote:
> From: Eric Dumazet
>
> A driver using dev_alloc_page() must not reuse a page allocated from
> emergency memory reserve.
>
> Otherwise all packets using this page will be immediately dropped,
> unless for very specific sockets having SOCK_MEMA
From: Eric Dumazet
A driver using dev_alloc_page() must not reuse a page allocated from
emergency memory reserve.
Otherwise all packets using this page will be immediately dropped,
unless for very specific sockets having SOCK_MEMALLOC bit set.
This issue might be hard to debug, because only a f
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