[dpdk-users] No free hugepages reported in hugepages when running DPDK helloworld example
gyp sud
gypsud at gmail.com
Sat Dec 23 22:44:56 CET 2017
I downloaded and built dpdk-stable-16.11.4 version (using
x86_64-native-linuxapp-gcc target). I'm running Ubuntu 16.04.3 LTS.
After setting up hugepages according to http://dpdk.org/doc/quick-start or
http://dpdk.org/doc/guides-16.04/linux_gsg/sys_reqs.html
mkdir -p /mnt/huge
mount -t hugetlbfs nodev /mnt/huge
echo 64 >
/sys/devices/system/node/node0/hugepages/hugepages-2048kB/nr_hugepages
I can see the hugepages fine.
#cat /proc/meminfo | grep
HugeAnonHugePages: 284672 kB
ShmemHugePages: 0 kB
HugePages_Total: 64
HugePages_Free: 64
HugePages_Rsvd: 0
HugePages_Surp: 0
Hugepagesize: 2048 kB
But when I run the helloWorld example, it complained about no free
hugepages, see below.
#./build/helloworld -l 0-3 -n 2
EAL: Detected 4 lcore(s)
EAL: No free hugepages reported in hugepages-1048576kB
EAL: Probing VFIO support...
hello from core 1
hello from core 2
hello from core 3
hello from core 0
Also, the memory info showed free hugepages were all gone.
#cat /proc/meminfo | grep Huge
AnonHugePages: 380928 kB
ShmemHugePages: 0 kB
HugePages_Total: 64
HugePages_Free: 0
HugePages_Rsvd: 0
HugePages_Surp: 0
Hugepagesize: 2048 kB
Any idea why this is happening?
Gyp
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