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From: oulijun <oulijun@huawei.com>
To: Wisam Monther <wisamm@nvidia.com>,
	"ferruh.yigit@intel.com" <ferruh.yigit@intel.com>,
	"wenzhuo.lu@intel.com" <wenzhuo.lu@intel.com>,
	"beilei.xing@intel.com" <beilei.xing@intel.com>,
	"bernard.iremonger@intel.com" <bernard.iremonger@intel.com>
Cc: "dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [dpdk-dev] [RFC] app/testpmd: support multi-process
Date: Tue, 12 Jan 2021 22:13:21 +0800
Message-ID: <53d7c028-e01f-d4e0-9a88-5c9a8b9bd083@huawei.com> (raw)
In-Reply-To: <MWHPR12MB1677724035F97ACC06237E3AA4AC0@MWHPR12MB1677.namprd12.prod.outlook.com>



在 2021/1/10 20:32, Wisam Monther 写道:
> Hi,
> 
>> -----Original Message-----
>> From: dev <dev-bounces@dpdk.org> On Behalf Of Lijun Ou
>> Sent: Friday, January 8, 2021 11:46 AM
>> To: ferruh.yigit@intel.com; wenzhuo.lu@intel.com; beilei.xing@intel.com;
>> bernard.iremonger@intel.com
>> Cc: dev@dpdk.org
>> Subject: [dpdk-dev] [RFC] app/testpmd: support multi-process
>>
>> This patch adds multi-process support for testpmd.
>> The test cmd example as follows:
>> the primary cmd:
>> ./testpmd -w xxx --file-prefix=xx -l 0-1 -n 2 -- -i\
>> --rxq=16 --txq=16 --num-procs=2 --proc-id=0 the secondary cmd:
>> ./testpmd -w xxx --file-prefix=xx -l 2-3 -n 2 -- -i\
>> --rxq=16 --txq=16 --num-procs=2 --proc-id=1
>>
>> Signed-off-by: Min Hu (Connor) <humin29@huawei.com>
>> Signed-off-by: Lijun Ou <oulijun@huawei.com>
>> ---
>>   app/test-pmd/cmdline.c    |   6 ++-
>>   app/test-pmd/config.c     |   9 +++-
>>   app/test-pmd/parameters.c |   9 ++++
>>   app/test-pmd/testpmd.c    | 133 ++++++++++++++++++++++++++++++++--
>> ------------
>>   app/test-pmd/testpmd.h    |   7 +++
>>   5 files changed, 121 insertions(+), 43 deletions(-)
>>
> 
> +1 for having this support for testpmd.
> 
> Some questions in my mind:
> How are the queues distributing here? In example I see 16 defined, are they for one instance or for all?
> Will all processes have same memory region? If installing one RTE_FLOW in one instance will be active for all?
> Same question for detaching device in one instance, how it will reflect on others?
> There is many other scenarios like this, how it will handle those?
> 
Hi,Wisam Monther
   Firstly, thank you for your questions. According to the current 
implementation scheme, all queues are evenly allocated to different 
processes based on proc_num and proc_id。
The number of receiving queues, number of processes, and process ID are 
specified for the master and slave processes. After being created by the 
main process, the sending and receiving queues are evenly distributed to 
all processes. The following shows the calculation rule for the Testpmd 
to allocate queues to each process after the proc ID is specified.
start(queue start id) = proc_id * nb_q / num_procs;
end(queue end id) = start + nb_q / num_procs;

For example, if support 16 txq and rxq
the 0 ~7 for primary process
the 8 ~15 for secondary process

all process have the same memory region.

Thanks
Lijun Ou

> BRs,
> Wisam Jaddo
> .
> 

  reply	other threads:[~2021-01-12 14:13 UTC|newest]

Thread overview: 76+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-08  9:46 Lijun Ou
2021-01-08 10:28 ` Ferruh Yigit
2021-01-09  9:54   ` oulijun
2021-01-10 12:32 ` Wisam Monther
2021-01-12 14:13   ` oulijun [this message]
2021-01-12 14:21     ` Wisam Monther
2021-01-14  2:46       ` oulijun
2021-01-20 14:06 ` [dpdk-dev] [RFC V2] " Lijun Ou
2021-03-05  1:04   ` [dpdk-dev] [PATCH] " Lijun Ou
2021-03-05  4:05     ` Ajit Khaparde
2021-03-10 11:11       ` Min Hu (Connor)
2021-03-11  2:47     ` [dpdk-dev] [PATCH v2] " Min Hu (Connor)
2021-03-22  2:27       ` Ajit Khaparde
2021-03-22  6:35         ` Min Hu (Connor)
2021-06-15 12:23       ` [dpdk-dev] [PATCH v14] " Min Hu (Connor)
2021-07-02 12:09       ` [dpdk-dev] [PATCH v15] " Andrew Rybchenko
2021-07-02 12:47         ` Andrew Rybchenko
2021-07-08 12:20           ` Min Hu (Connor)
2021-07-08 12:30             ` Andrew Rybchenko
2021-07-08 12:51               ` Min Hu (Connor)
2021-07-10  3:50       ` [dpdk-dev] [PATCH v16] " Min Hu (Connor)
2021-07-24 11:45         ` Thomas Monjalon
2021-07-26  0:26           ` Min Hu (Connor)
2021-07-26  6:30             ` Thomas Monjalon
2021-07-26  7:28               ` Min Hu (Connor)
2021-08-02  1:51                 ` Min Hu (Connor)
2021-08-02  8:03                   ` Thomas Monjalon
2021-08-16 18:12                     ` Singh, Aman Deep
2021-08-24 12:18                       ` Ferruh Yigit
2021-08-24 13:27                         ` Min Hu (Connor)
2021-08-25  2:06       ` [dpdk-dev] [PATCH v17] " Min Hu (Connor)
2021-09-07 13:23         ` Ferruh Yigit
2021-09-08  0:48           ` Min Hu (Connor)
2021-03-11  9:07     ` [dpdk-dev] [PATCH v3] " Min Hu (Connor)
2021-03-20  0:58       ` Min Hu (Connor)
2021-03-22  7:07     ` [dpdk-dev] [PATCH v4] " Min Hu (Connor)
2021-03-22 11:19       ` Ferruh Yigit
2021-03-24  8:08       ` Li, Xiaoyun
2021-03-25 13:32         ` Min Hu (Connor)
2021-03-25 23:25           ` Ajit Khaparde
2021-03-26  6:46             ` Min Hu (Connor)
2021-03-25 13:17     ` [dpdk-dev] [PATCH v5] " Min Hu (Connor)
2021-03-26  6:46     ` [dpdk-dev] [PATCH v6] " Min Hu (Connor)
2021-03-26  8:52     ` [dpdk-dev] [PATCH v7] " Min Hu (Connor)
2021-03-29  7:51       ` Li, Xiaoyun
2021-03-30  1:48         ` Min Hu (Connor)
2021-03-30  1:48     ` [dpdk-dev] [PATCH v8] " Min Hu (Connor)
2021-03-30  2:17       ` Li, Xiaoyun
2021-03-30  6:36         ` Min Hu (Connor)
2021-03-30  3:11       ` Ajit Khaparde
2021-03-30  6:41         ` Min Hu (Connor)
2021-03-30 10:19           ` Ferruh Yigit
2021-03-30 10:43             ` Min Hu (Connor)
2021-04-08 10:32               ` Min Hu (Connor)
2021-04-08 13:27                 ` Ferruh Yigit
2021-04-09  0:45                   ` Min Hu (Connor)
2021-04-12 16:37       ` Ferruh Yigit
2021-04-15  7:54         ` Ferruh Yigit
2021-04-16  2:20           ` Min Hu (Connor)
2021-04-16  1:52     ` [dpdk-dev] [PATCH v9] " Min Hu (Connor)
2021-04-16 16:30       ` Ferruh Yigit
2021-04-17  6:12         ` Min Hu (Connor)
2021-04-17  6:12     ` [dpdk-dev] [PATCH v10] " Min Hu (Connor)
2021-04-17 22:21       ` Ferruh Yigit
2021-04-19  1:03         ` Min Hu (Connor)
2021-04-19  1:03     ` [dpdk-dev] [PATCH v11] " Min Hu (Connor)
2021-04-19 13:42       ` Ferruh Yigit
2021-04-21  9:08         ` Min Hu (Connor)
2021-04-21  8:36     ` [dpdk-dev] [PATCH v12] " Min Hu (Connor)
2021-04-22  1:18     ` [dpdk-dev] [PATCH v13] " Min Hu (Connor)
2021-06-08  8:42       ` Andrew Rybchenko
2021-06-08 10:22         ` Thomas Monjalon
2021-06-08 10:39           ` Andrew Rybchenko
2021-06-08 12:02             ` Thomas Monjalon
2021-06-08 12:36             ` Ferruh Yigit
2021-06-15 12:04         ` Min Hu (Connor)

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