On 12/26/2017 10:22 PM, David Miller wrote:
> From: Joao Martins <joao.m.mart...@oracle.com>
> Date: Thu, 21 Dec 2017 17:24:28 +
>
>> Commit eb1723a29b9a ("xen-netback: refactor guest rx") refactored Rx
>> handling and as a result decreased max gran
er batches (i.e. for better throughput with big packets) as it
was prior to the above mentioned commit.
Signed-off-by: Joao Martins <joao.m.mart...@oracle.com>
---
Changes since v1:
* move rx_copy.{idx,op} reallocation to separate helper
Addressed Paul's comments:
* rename xenvif_copy_
On Mon, Nov 13, 2017 at 04:39:09PM +, Paul Durrant wrote:
> > -Original Message-
> > From: Joao Martins [mailto:joao.m.mart...@oracle.com]
> > Sent: 13 November 2017 16:34
> > To: Paul Durrant <paul.durr...@citrix.com>
> > Cc: netdev@vger.kernel.org
On Mon, Nov 13, 2017 at 11:58:03AM +, Paul Durrant wrote:
> On Mon, Nov 13, 2017 at 11:54:00AM +0000, Joao Martins wrote:
> > On 11/13/2017 10:33 AM, Paul Durrant wrote:
> > > On 11/10/2017 19:35 PM, Joao Martins wrote:
[snip]
> > >> diff --git a/drivers/net/
On 11/13/2017 10:33 AM, Paul Durrant wrote:
>> -Original Message-
>> From: Joao Martins [mailto:joao.m.mart...@oracle.com]
>> Sent: 10 November 2017 19:35
>> To: netdev@vger.kernel.org
>> Cc: Joao Martins <joao.m.mart...@oracle.com>; Wei Liu
&g
er batches (i.e. for better throughput with big packets) as it
was prior to the above mentioned commit.
Signed-off-by: Joao Martins <joao.m.mart...@oracle.com>
---
drivers/net/xen-netback/common.h| 6 --
drivers/net/xen-netback/interface.c | 25 -
drivers
On 02 Jun 2015, at 16:53, Wei Liu wei.l...@citrix.com wrote:
On Fri, May 22, 2015 at 10:24:39AM +, Joao Martins wrote:
On 19 May 2015, at 17:23, Wei Liu wei.l...@citrix.com wrote:
On Tue, May 12, 2015 at 07:18:27PM +0200, Joao Martins wrote:
Introduces persistent grants for TX path
On 02 Jun 2015, at 17:07, Wei Liu wei.l...@citrix.com wrote:
On Fri, May 22, 2015 at 10:25:10AM +, Joao Martins wrote:
On 19 May 2015, at 17:32, Wei Liu wei.l...@citrix.com wrote:
On Tue, May 12, 2015 at 07:18:28PM +0200, Joao Martins wrote:
It starts by doing a lookup in the tree
...@lists.xen.org] On Behalf Of Joao Martins
Sent: Friday, May 22, 2015 6:27 PM
To: Wei Liu
Cc: ian.campb...@citrix.com; netdev@vger.kernel.org; david.vra...@citrix.com;
xen-de...@lists.xenproject.org;boris.ostrov...@oracle.com
Subject: Re: [Xen-devel] [RFC PATCH 00/13] Persistent grant maps
On 19 May 2015, at 17:23, Wei Liu wei.l...@citrix.com wrote:
On Tue, May 12, 2015 at 07:18:27PM +0200, Joao Martins wrote:
Introduces persistent grants for TX path which follows similar code path
as the grant mapping.
It starts by checking if there's a persistent grant available for header
On 19 May 2015, at 17:19, Wei Liu wei.l...@citrix.com wrote:
On Tue, May 12, 2015 at 07:18:26PM +0200, Joao Martins wrote:
Checks for feature-persistent that indicates persistent grants
support. Adds max_persistent_grants module param that specifies the max
number of persistent grants, which
On 19 May 2015, at 17:32, Wei Liu wei.l...@citrix.com wrote:
On Tue, May 12, 2015 at 07:18:28PM +0200, Joao Martins wrote:
It starts by doing a lookup in the tree for a gref. If no persistent
grant is found on the tree, it will do grant copy and prepare
the grant maps. Finally valides
On 19 May 2015, at 17:39, Wei Liu wei.l...@citrix.com wrote:
On Tue, May 12, 2015 at 07:18:24PM +0200, Joao Martins wrote:
There have been recently[3] some discussions and issues raised on
persistent grants for the block layer, though the numbers above
show some significant improvements
On 19 May 2015, at 17:35, Wei Liu wei.l...@citrix.com wrote:
On Tue, May 12, 2015 at 07:18:30PM +0200, Joao Martins wrote:
By introducing persistent grants we speed up the RX thread with the
decreased copy cost, that leads to a throughput decrease of 20%.
It is observed that the rx_queue
On 19 May 2015, at 17:36, Wei Liu wei.l...@citrix.com wrote:
On Tue, May 12, 2015 at 07:18:32PM +0200, Joao Martins wrote:
On xenvif_start_xmit() we have an additional queue to the netback RX
kthread that will sends the packet. When using burst1 pktgen sets
skb-xmit_more to tell the driver
On 18 May 2015, at 17:55, David Vrabel david.vra...@citrix.com wrote:
On 12/05/15 18:18, Joao Martins wrote:
Instead of grant/revoking the buffer related to the skb, it will use
an already granted page and memcpy to it. The grants will be mapped
by xen-netback and reused overtime, but only
Mpps
(burst 2, pkt_size 64) compared to using the kthread. Maximum with grant
copy is 1.2 Mpps, irrespective of the burst. All of this, measured on
an Intel(R) Xeon(R) CPU E5-1650 v2 @ 3.50GHz.
Signed-off-by: Joao Martins joao.mart...@neclab.eu
---
drivers/net/xen-netback/common.h| 2
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