Re: [dpdk-users] Failed to allocate tx pool

[Raghu Gangi <raghu_gangi@adaranetworks.com>]

Hi Cliff,

But I want to allocate memory on only NUMA node where my lcore's and DPDK NICs are connected.
I think this gives the most optimized performace when everything is connected to the same NUMA node.

Thanks,
Raghu

-----Original Message-----
From: Raghu Gangi 
Sent: Wednesday, October 31, 2018 9:31 AM
To: Cliff Burdick
Cc: users@dpdk.org
Subject: Re: [dpdk-users] Failed to allocate tx pool

Hi Cliff,

Yes, I had tried it.

When I set memory on both NUMA nodes it works without this issue.

I set using the following commands:

root@rg2-14053:/home/adara/raghu_2/dpdk-2.2.0# echo 128 > /sys/devices/system/node/node1/hugepages/hugepages-2048kB/nr_hugepages
root@rg2-14053:/home/adara/raghu_2/dpdk-2.2.0# echo 128 > /sys/devices/system/node/node0/hugepages/hugepages-2048kB/nr_hugepages
root@rg2-14053:/home/adara/raghu_2/dpdk-2.2.0#
root@rg2-14053:/home/adara/raghu_2/dpdk-2.2.0# cat /sys/devices/system/node/node1/hugepages/hugepages-2048kB/nr_hugepages
128
root@rg2-14053:/home/adara/raghu_2/dpdk-2.2.0# cat /sys/devices/system/node/node0/hugepages/hugepages-2048kB/nr_hugepages
128


Thanks,
Raghu


  Date: Tue, 30 Oct 2018 18:56:45 -0700
>From: Cliff Burdick <shaklee3@gmail.com>
>To: Raghu Gangi <raghu_gangi@adaranetworks.com>
>Cc: users <users@dpdk.org>
>Subject: Re: [dpdk-users] Failed to allocate tx pool
>Message-ID:
>	<CA+Gp1nZY1xM_qGdBcrvnuUPc2duDwQH5dTdSRbuwCLgXwf_=Sg@mail.gmail.com>
>Content-Type: text/plain; charset="UTF-8"
>
>Have you tried allocating memory on both numa nodes to rule that out?
>
>
>On Tue, Oct 30, 2018, 16:40 Raghu Gangi <raghu_gangi@adaranetworks.com>
>wrote:
>
>> Hi,
>>
>> I am currently facing issue in brining up DPDK application. It is 
>>failing  with the following message. rte_errno is set to 12 in this 
>>scenario.
>>(Out
>> of memory).
>>
>> It would be great if you can kindly point me to what am I doing 
>> incorrectly.
>>
>> I am using DPDK 2.2.0 version on ubuntu 16.04.
>>
>> EAL: PCI device 0000:02:00.0 on NUMA socket 0
>> EAL:   probe driver: 8086:1521 rte_igb_pmd
>> EAL:   Not managed by a supported kernel driver, skipped
>> EAL: PCI device 0000:02:00.3 on NUMA socket 0
>> EAL:   probe driver: 8086:1521 rte_igb_pmd
>> EAL:   Not managed by a supported kernel driver, skipped
>> EAL: PCI device 0000:82:00.0 on NUMA socket 1
>> EAL:   probe driver: 8086:10fb rte_ixgbe_pmd
>> EAL:   PCI memory mapped at 0x7fd1a7600000
>> EAL:   PCI memory mapped at 0x7fd1a7640000
>> PMD: eth_ixgbe_dev_init(): MAC: 2, PHY: 12, SFP+: 3
>> PMD: eth_ixgbe_dev_init(): port 0 vendorID=0x8086 deviceID=0x10fb
>> EAL: PCI device 0000:82:00.1 on NUMA socket 1
>> EAL:   probe driver: 8086:10fb rte_ixgbe_pmd
>> EAL:   PCI memory mapped at 0x7fd1a7644000
>> EAL:   PCI memory mapped at 0x7fd1a7684000
>> PMD: eth_ixgbe_dev_init(): MAC: 2, PHY: 12, SFP+: 4
>> PMD: eth_ixgbe_dev_init(): port 1 vendorID=0x8086 deviceID=0x10fb
>> RING: Cannot reserve memory
>> dpdk_if_init:256: failed to allocate tx pool
>>
>> The DPDK bound NIC cards are on NUMA socket 1.
>>
>> root@rg2-14053:/home/adara/raghu_2/dpdk-2.2.0#
>> ./tools/dpdk_nic_bind.py --status
>>
>> Network devices using DPDK-compatible driver 
>>============================================
>> 0000:82:00.0 '82599ES 10-Gigabit SFI/SFP+ Network Connection'
>>drv=igb_uio
>> unused=ixgbe
>> 0000:82:00.1 '82599ES 10-Gigabit SFI/SFP+ Network Connection'
>>drv=igb_uio
>> unused=ixgbe
>>
>> Network devices using kernel driver
>> ===================================
>> 0000:02:00.0 'I350 Gigabit Network Connection' if=eno1 drv=igb 
>> unused=igb_uio *Active*
>> 0000:02:00.3 'I350 Gigabit Network Connection' if=eno2 drv=igb 
>> unused=igb_uio
>>
>> Other network devices
>> =====================
>> <none>
>>
>>
>> root@rg2-14053:/home/adara/raghu_2/run# cat 
>> /sys/bus/pci/devices/0000\:82\:00.0/numa_node
>> 1
>> root@rg2-14053:/home/adara/raghu_2/run# cat 
>> /sys/bus/pci/devices/0000\:82\:00.1/numa_node
>> 1
>>
>>
>> DPDK huge pages are allocated on the same NUMA node 1 as shown below:
>>
>> root@rg2-14053:/home/adara/raghu_2/run# cat 
>> /sys/devices/system/node/node0/hugepages/hugepages-2048kB/nr_hugepage
>> s
>> 0
>> root@rg2-14053:/home/adara/raghu_2/run# cat 
>> /sys/devices/system/node/node1/hugepages/hugepages-2048kB/nr_hugepage
>> s
>> 128
>> root@rg2-14053:/home/adara/raghu_2/run#
>>
>> Output of CPU Layout tool:
>>
>> root@rg2-14053:/home/adara/raghu_2/run#
>>../dpdk-2.2.0/tools/cpu_layout.py
>> ============================================================
>> Core and Socket Information (as reported by '/proc/cpuinfo') 
>>============================================================
>> cores =  [0, 1, 2, 3, 4, 8, 9, 10, 11, 12]  sockets =  [0, 1]
>>
>>         Socket 0        Socket 1
>>         --------        --------
>> Core 0  [0, 20]         [10, 30]
>>
>> Core 1  [1, 21]         [11, 31]
>>
>> Core 2  [2, 22]         [12, 32]
>>
>> Core 3  [3, 23]         [13, 33]
>>
>> Core 4  [4, 24]         [14, 34]
>>
>> Core 8  [5, 25]         [15, 35]
>>
>> Core 9  [6, 26]         [16, 36]
>>
>> Core 10 [7, 27]         [17, 37]
>>
>> Core 11 [8, 28]         [18, 38]
>>
>> Core 12 [9, 29]         [19, 39]
>>
>> Thanks,
>> Raghu
>>
>
>