> > > The setup where it goes wrong:
> > > 1. Xeon E5-2699, HT on, turbo off, 1GB hugepage for both host and guest
> > On the Haswell machine (on which I don't have BIOS access), HT is on,
> > but I unplug siblings at runtime.
> > I also have 1G pages on both sides, and I isolate the cores used by
On Fri, Nov 04, 2016 at 12:22:47PM +0100, Maxime Coquelin wrote:
>
>
> Hi Maxime,
>
> I did a little more macswap test and found out more stuff here:
> >>>Thanks for doing more tests.
> >>>
>
> 1. I did loopback test on another HSW machine with the same H/W,
> and i
er.org; Pierre Pfister (ppfister)
>> ; Xie, Huawei ; dev at
>> dpdk.org;
>> vkaplans at redhat.com; mst at redhat.com
>> Subject: Re: [dpdk-dev] [PATCH v4] vhost: Add indirect descriptors support
>> to the
>> TX path
>>
>>
>>
>>>>
> vkaplans at redhat.com; mst at redhat.com
> Subject: Re: [dpdk-dev] [PATCH v4] vhost: Add indirect descriptors support
> to the TX path
>
>
>
> On 11/04/2016 01:30 PM, Wang, Zhihong wrote:
> >
> >
> >> -Original Message-
> >> Fro
On 11/04/2016 12:36 PM, Yuanhan Liu wrote:
> On Fri, Nov 04, 2016 at 12:22:47PM +0100, Maxime Coquelin wrote:
>>
>>
>> Hi Maxime,
>>
>> I did a little more macswap test and found out more stuff here:
> Thanks for doing more tests.
>
>>
>> 1. I did loopback test on anot
> vkaplans at redhat.com; mst at redhat.com
> Subject: Re: [dpdk-dev] [PATCH v4] vhost: Add indirect descriptors support to
> the
> TX path
>
>
>
> >>>> Hi Maxime,
> >>>>
> >>>> I did a little more macswap test and found out more
Hi Maxime,
I did a little more macswap test and found out more stuff here:
>>> Thanks for doing more tests.
>>>
1. I did loopback test on another HSW machine with the same H/W,
and indirect_desc on and off seems have close perf
2. So I checked the gcc
> vkaplans at redhat.com; mst at redhat.com
> Subject: Re: [dpdk-dev] [PATCH v4] vhost: Add indirect descriptors support
> to the TX path
>
>
>
> On 11/04/2016 08:57 AM, Maxime Coquelin wrote:
> > Hi Zhihong,
> >
> > On 11/04/2016 08:20 AM, Wang, Zhiho
2016 4:11 PM
>>> To: Wang, Zhihong ; Yuanhan Liu
>>>
>>> Cc: stephen at networkplumber.org; Pierre Pfister (ppfister)
>>> ; Xie, Huawei ; dev at
>>> dpdk.org;
>>> vkaplans at redhat.com; mst at redhat.com
>>> Subject: Re: [dpdk-dev] [
phen at networkplumber.org; Pierre Pfister (ppfister)
>> ; Xie, Huawei ; dev at
>> dpdk.org;
>> vkaplans at redhat.com; mst at redhat.com
>> Subject: Re: [dpdk-dev] [PATCH v4] vhost: Add indirect descriptors support
>> to the TX path
>>
>>
>>
>> On 11/
hat.com; dev at dpdk.org; vkaplans at redhat.com
> Subject: Re: [dpdk-dev] [PATCH v4] vhost: Add indirect descriptors support to
> the TX path
>
>
>>
>> The strange thing with both of our figures is that this is below from
>> what I obtain with my SandyBridge machine. The SB
dpdk.org;
> vkaplans at redhat.com; mst at redhat.com
> Subject: Re: [dpdk-dev] [PATCH v4] vhost: Add indirect descriptors support
> to the TX path
>
>
>
> On 11/02/2016 11:51 AM, Maxime Coquelin wrote:
> >
> >
> > On 10/31/2016 11:01 AM, Wang, Zhihong wrote:
> &g
-Original Message-
From: dev [mailto:dev-boun...@dpdk.org] On Behalf Of Maxime Coquelin
Sent: Thursday, November 3, 2016 4:11 PM
To: Wang, Zhihong ; Yuanhan Liu
Cc: mst at redhat.com; dev at dpdk.org; vkaplans at redhat.com
Subject: Re: [dpdk-dev] [PATCH v4] vhost: Add indirect
>>> To: Wang, Zhihong ; Yuanhan Liu
>>>
>>> Cc: stephen at networkplumber.org; Pierre Pfister (ppfister)
>>> ; Xie, Huawei ; dev at
>>> dpdk.org;
>>> vkaplans at redhat.com; mst at redhat.com
>>> Subject: Re: [dpdk-dev] [PATCH v4] vhost
er.org; Pierre Pfister (ppfister)
>> ; Xie, Huawei ; dev at
>> dpdk.org;
>> vkaplans at redhat.com; mst at redhat.com
>> Subject: Re: [dpdk-dev] [PATCH v4] vhost: Add indirect descriptors support
>> to the TX path
>>
>>
>>
>> On 10/28/
On Tue, Nov 01, 2016 at 10:39:35AM +0100, Thomas Monjalon wrote:
> 2016-11-01 16:15, Yuanhan Liu:
> > On Fri, Oct 28, 2016 at 09:58:51AM +0200, Maxime Coquelin wrote:
> > > Agree, what we need is to be able to disable Virtio PMD features
> > > without having to rebuild the PMD.
> >
> > I want this
On Fri, Oct 28, 2016 at 09:58:51AM +0200, Maxime Coquelin wrote:
> >From my experience, and as Michael pointed out, the best mode for small
> >packets is obviously
> >ANY_LAYOUT so it uses a single descriptor per packet.
> Of course, having a single descriptor is in theory the best way.
> But, in
2016-11-01 16:15, Yuanhan Liu:
> On Fri, Oct 28, 2016 at 09:58:51AM +0200, Maxime Coquelin wrote:
> > Agree, what we need is to be able to disable Virtio PMD features
> > without having to rebuild the PMD.
>
> I want this feature (or more precisely, ability) long times ago.
> For example, I'd wish
> vkaplans at redhat.com; mst at redhat.com
> Subject: Re: [dpdk-dev] [PATCH v4] vhost: Add indirect descriptors support
> to the TX path
>
>
>
> On 10/28/2016 02:49 AM, Wang, Zhihong wrote:
> >
> >> > -Original Message-
> >> > From
tober 27, 2016 5:55 PM
>>> To: Wang, Zhihong ; Yuanhan Liu
>>> ; stephen at networkplumber.org; Pierre
>>> Pfister (ppfister)
>>> Cc: Xie, Huawei ; dev at dpdk.org;
>>> vkaplans at redhat.com; mst at redhat.com
>>> Subject: Re: [dpdk-dev] [PATCH v
t;> > stephen at networkplumber.org; Pierre Pfister (ppfister)
>> > ; Xie, Huawei ; dev at
>> > dpdk.org;
>> > vkaplans at redhat.com; mst at redhat.com
>> > Subject: Re: [dpdk-dev] [PATCH v4] vhost: Add indirect descriptors support
>> > to the TX path
&g
rkplumber.org; Pierre
>> Pfister (ppfister)
>> Cc: Xie, Huawei ; dev at dpdk.org;
>> vkaplans at redhat.com; mst at redhat.com
>> Subject: Re: [dpdk-dev] [PATCH v4] vhost: Add indirect descriptors support
>> to the TX path
>>
>>
>>
>> On 1
PM
To: Yuanhan Liu
Cc: mst at redhat.com; dev at dpdk.org; vkaplans at redhat.com
Subject: Re: [dpdk-dev] [PATCH v4] vhost: Add indirect descriptors support to
the TX path
On 10/27/2016 12:33 PM, Yuanhan Liu wrote:
> On Thu, Oct 27, 2016 at 11:10:34AM +0200, Maxime Coquelin wrote:
>>
dpdk.org;
> vkaplans at redhat.com; mst at redhat.com
> Subject: Re: [dpdk-dev] [PATCH v4] vhost: Add indirect descriptors support
> to the TX path
>
> On Thu, Oct 27, 2016 at 12:35:11PM +0200, Maxime Coquelin wrote:
> >
> >
> > On 10/27/2016 12:33 PM, Yuanhan Liu wro
gt; >>Maxime
> >>
> >>>
> >>>
> >>>Thanks
> >>>Zhihong
> >>>
> >>>>-Original Message-
> >>>>From: Maxime Coquelin [mailto:maxime.coquelin at redhat.com]
> >>>>Sent: Monday, October 17,
>Thanks
> >Zhihong
> >
> >>-Original Message-
> >>From: Maxime Coquelin [mailto:maxime.coquelin at redhat.com]
> >>Sent: Monday, October 17, 2016 10:15 PM
> >>To: Yuanhan Liu
> >>Cc: Wang, Zhihong ; Xie, Huawei
&g
-Original Message-
>>>> From: Maxime Coquelin [mailto:maxime.coquelin at redhat.com]
>>>> Sent: Monday, October 17, 2016 10:15 PM
>>>> To: Yuanhan Liu
>>>> Cc: Wang, Zhihong ; Xie, Huawei
>>>> ; dev at dpdk.org; vkaplans at redhat.com;
I'll try -rc1/-rc2 on my platform, and let you know.
>>
>> Thanks,
>> Maxime
>>
>>>
>>>
>>> Thanks
>>> Zhihong
>>>
>>>> -Original Message-
>>>> From: Maxime Coquelin [mailto:maxime.coque
ime Coquelin [mailto:maxime.coquelin at redhat.com]
>>> Sent: Monday, October 17, 2016 10:15 PM
>>> To: Yuanhan Liu
>>> Cc: Wang, Zhihong ; Xie, Huawei
>>> ; dev at dpdk.org; vkaplans at redhat.com;
>>> mst at redhat.com; stephen at networkplumber.org
>
uelin [mailto:maxime.coquelin at redhat.com]
>> Sent: Monday, October 17, 2016 10:15 PM
>> To: Yuanhan Liu
>> Cc: Wang, Zhihong ; Xie, Huawei
>> ; dev at dpdk.org; vkaplans at redhat.com;
>> mst at redhat.com; stephen at networkplumber.org
>> Subject: Re: [dpdk-
; vkaplans at redhat.com; mst at redhat.com
> Subject: Re: [dpdk-dev] [PATCH v4] vhost: Add indirect descriptors support
> to the TX path
>
>
>
> On 10/27/2016 11:10 AM, Maxime Coquelin wrote:
> > Hi Zhihong,
> >
> > On 10/27/2016 11:00 AM, Wang, Zhihong wro
om;
> mst at redhat.com; stephen at networkplumber.org
> Subject: Re: [dpdk-dev] [PATCH v4] vhost: Add indirect descriptors support
> to the TX path
>
>
>
> On 10/17/2016 03:21 PM, Yuanhan Liu wrote:
> > On Mon, Oct 17, 2016 at 01:23:23PM +0200, Maxime Coquelin wrote:
>
On Mon, Oct 17, 2016 at 01:23:23PM +0200, Maxime Coquelin wrote:
> >On my side, I just setup 2 Windows 2016 VMs, and confirm the issue.
> >I'll continue the investigation early next week.
>
> The root cause is identified.
> When INDIRECT_DESC feature is negotiated, Windows guest uses indirect
> fo
On 10/17/2016 03:21 PM, Yuanhan Liu wrote:
> On Mon, Oct 17, 2016 at 01:23:23PM +0200, Maxime Coquelin wrote:
>>> On my side, I just setup 2 Windows 2016 VMs, and confirm the issue.
>>> I'll continue the investigation early next week.
>>
>> The root cause is identified.
>> When INDIRECT_DESC feat
6 4:43 PM
>>> To: yuanhan.liu at linux.intel.com; Xie, Huawei ;
>>> dev at dpdk.org
>>> Cc: vkaplans at redhat.com; mst at redhat.com;
>>> stephen at networkplumber.org; Maxime Coquelin
>>>
>>> Subject: [dpdk-dev] [PATCH v4] vhost: Add indirect d
; dev at dpdk.org
>> Cc: vkaplans at redhat.com; mst at redhat.com;
>> stephen at networkplumber.org; Maxime Coquelin
>>
>> Subject: [dpdk-dev] [PATCH v4] vhost: Add indirect descriptors support to
>> the TX path
>>
>> Indirect descriptors are usually suppor
hat.com;
> stephen at networkplumber.org
> Subject: Re: [dpdk-dev] [PATCH v4] vhost: Add indirect descriptors support
> to the TX path
>
>
>
> > -Original Message-
> > From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of Maxime Coquelin
> > Sent: T
.com;
> stephen at networkplumber.org; Maxime Coquelin
>
> Subject: [dpdk-dev] [PATCH v4] vhost: Add indirect descriptors support to
> the TX path
>
> Indirect descriptors are usually supported by virtio-net devices,
> allowing to dispatch a larger number of requests.
>
> When th
On Tue, Sep 27, 2016 at 10:42:49AM +0200, Maxime Coquelin wrote:
> Indirect descriptors are usually supported by virtio-net devices,
> allowing to dispatch a larger number of requests.
>
> When the virtio device sends a packet using indirect descriptors,
> only one slot is used in the ring, even f
Indirect descriptors are usually supported by virtio-net devices,
allowing to dispatch a larger number of requests.
When the virtio device sends a packet using indirect descriptors,
only one slot is used in the ring, even for large packets.
The main effect is to improve the 0% packet loss benchma
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