Re: [dpdk-dev] [PATCH v2] app/testpmd: optimize membuf pool allocation

[Ferruh Yigit <ferruh.yigit@intel.com>]

On 9/12/2018 2:54 AM, dev-bounces@dpdk.org wrote:
> By default, testpmd will create membuf pool for all NUMA nodes and
> ignore EAL configuration.
> 
> Count the number of available NUMA according to EAL core mask or core
> list configuration. Optimized by only creating membuf pool for those
> nodes.
> 
> Fixes: c9cafcc ("app/testpmd: fix mempool creation by socket id")
> 
> Signed-off-by: Phil Yang <phil.yang@arm.com>
> Acked-by: Gavin Hu <gavin.hu@arm.com>
> ---
>  app/test-pmd/testpmd.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/app/test-pmd/testpmd.c b/app/test-pmd/testpmd.c
> index ee48db2..a56af2b 100644
> --- a/app/test-pmd/testpmd.c
> +++ b/app/test-pmd/testpmd.c
> @@ -476,6 +476,8 @@ set_default_fwd_lcores_config(void)
>  
>  	nb_lc = 0;
>  	for (i = 0; i < RTE_MAX_LCORE; i++) {
> +		if (!rte_lcore_is_enabled(i))
> +			continue;
>  		sock_num = rte_lcore_to_socket_id(i);
>  		if (new_socket_id(sock_num)) {
>  			if (num_sockets >= RTE_MAX_NUMA_NODES) {
> @@ -485,8 +487,6 @@ set_default_fwd_lcores_config(void)
>  			}
>  			socket_ids[num_sockets++] = sock_num;
>  		}
> -		if (!rte_lcore_is_enabled(i))
> -			continue;
>  		if (i == rte_get_master_lcore())
>  			continue;
>  		fwd_lcores_cpuids[nb_lc++] = i;
> 


This is causing testpmd fail for the case all cores from socket 1 and added a
virtual device which will try to allocate memory from socket 0.


 $ testpmd -l<cores from socket 1> --vdev net_pcap0,iface=lo -- -i
 ...
 Failed to setup RX queue:No mempool allocation on the socket 0
 EAL: Error - exiting with code: 1
   Cause: Start ports failed