在 2021/1/10 20:32, Wisam Monther 写道:
Hi,
-----Original Message-----
From: dev <dev-boun...@dpdk.org> On Behalf Of Lijun Ou
Sent: Friday, January 8, 2021 11:46 AM
To: ferruh.yi...@intel.com; wenzhuo...@intel.com; beilei.x...@intel.com;
bernard.iremon...@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) <humi...@huawei.com>
Signed-off-by: Lijun Ou <ouli...@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
.
