Re: [dpdk-users] Run testpmd application and encountered no free page issues

[Paul Tsvika <mozloverinweb@gmail.com>]

Hi Shreyansh,

Thanks for the reply.

By using the set-up script in DPDK:

the hugepage memory looks to be allocated properly:

cat /proc/meminfo

HugePages_Total:     240
HugePages_Free:     240
HugePages_Rsvd:        0
HugePages_Surp:         0
Hugepagesize:       2048 kB


and then i run the commands below in sequence:

$ sudo modprobe uio
$ sudo insmod ./build/kmod/igb_uio.ko
$ sudo ./usertools/dpdk-devbind.py -b igb_uio xxx:xx.0 xxx:xx.1   (
xxx.xx.0, xxx.xx.1 <-- 10G port pci address )
$ sudo ./build/app/testpmd -l 1,2,3 -n 2 -- -i

EAL: Detected 16 lcore(s)
*EAL: No free hugepages reported in hugepages-1048576kB*
EAL: Probing VFIO support...
EAL: VFIO support initialized
*EAL: PCI device 0000:03:00.0 on NUMA socket 0*
*EAL:   probe driver: 8086:15ad net_ixgbe*
*EAL: PCI device 0000:03:00.1 on NUMA socket 0*
*EAL:   probe driver: 8086:15ad net_ixgbe*
EAL: PCI device 0000:05:00.0 on NUMA socket 0
EAL:   probe driver: 8086:1521 net_e1000_igb
EAL: PCI device 0000:05:00.1 on NUMA socket 0
EAL:   probe driver: 8086:1521 net_e1000_igb
Interactive-mode selected
USER1: create a new mbuf pool <mbuf_pool_socket_0>: n=163456, size=2176,
socket=0
Configuring Port 0 (socket 0)
PMD: ixgbe_dev_link_status_print():  Port 0: Link Down
Port 0: 00:25:90:5C:E9:58
Configuring Port 1 (socket 0)
PMD: ixgbe_dev_link_status_print():  Port 1: Link Down
Port 1: 00:25:90:5C:E9:59
Checking link statuses...
Done
testpmd>


Questions below:

1. It looks like the application can enter the interactive mode. however, I
have no idea why *EAL: No free hugepages reported in hugepages-1048576kB *keeps
popping out.

2. Is there any reason why the ports went down why I run the commands? The
Link was up before running it.

3. The hugepage will be gone after running this application.

HugePages_Total:     240
HugePages_Free:         0
HugePages_Rsvd:        0
HugePages_Surp:         0
Hugepagesize:       2048 kB

It became this. However, how can i free it again ? I tried to umount and
mount again but it did not work.


Please advice if any.



Paul