[dpdk-dev] mmap failed: Cannot allocate memory when init dpdk eal

[zhangsha (A)]

Hi ，all

I am suffering from the problem mmap failed as followed when init dpdk eal.

Fri Jan 30 09:03:29 2015:EAL: Setting up memory...
Fri Jan 30 09:03:34 2015:EAL: map_all_hugepages(): mmap failed: Cannot 
allocate memory
Fri Jan 30 09:03:34 2015:EAL: Failed to mmap 2 MB hugepages
Fri Jan 30 09:03:34 2015:EAL: Cannot init memory

Before I run the demo, the free hugepages of my host is :

cat /proc/meminfo
MemTotal:       132117056 kB
MemFree:        122040292 kB
Buffers:           10984 kB
Cached:           123056 kB
SwapCached:            0 kB
Active:           120812 kB
Inactive:          85860 kB
Active(anon):      79488 kB
Inactive(anon):      364 kB
Active(file):      41324 kB
Inactive(file):    85496 kB
Unevictable:       23576 kB
Mlocked:           23576 kB
SwapTotal:             0 kB
SwapFree:              0 kB
Dirty:              2576 kB
Writeback:             0 kB
AnonPages:         96236 kB
Mapped:            19936 kB
Shmem:               552 kB
Slab:             101344 kB
SReclaimable:      24164 kB
SUnreclaim:        77180 kB
KernelStack:        2544 kB
PageTables:         4180 kB
NFS_Unstable:          0 kB
Bounce:                0 kB
WritebackTmp:          0 kB
CommitLimit:    61864224 kB
Committed_AS:     585844 kB
VmallocTotal:   34359738367 kB
VmallocUsed:      518656 kB
VmallocChunk:   34292133264 kB
HardwareCorrupted:     0 kB
AnonHugePages:      4096 kB
HugePages_Total:    4096
HugePages_Free:     4096
HugePages_Rsvd:        0
HugePages_Surp:        0
Hugepagesize:       2048 kB
DirectMap4k:       96256 kB
DirectMap2M:     6178816 kB
DirectMap1G:    127926272 kB

And after the demo executed, I got the hugepages like this:

cat /proc/meminfo
MemTotal:       132117056 kB
MemFree:        117325180 kB
Buffers:           33508 kB
Cached:           721912 kB
SwapCached:            0 kB
Active:          4217712 kB
Inactive:         540956 kB
Active(anon):    4019068 kB
Inactive(anon):   121136 kB
Active(file):     198644 kB
Inactive(file):   419820 kB
Unevictable:       23908 kB
Mlocked:           23908 kB
SwapTotal:             0 kB
SwapFree:              0 kB
Dirty:              2856 kB
Writeback:             0 kB
AnonPages:       4035184 kB
Mapped:           160292 kB
Shmem:            122100 kB
Slab:             177908 kB
SReclaimable:      64808 kB
SUnreclaim:       113100 kB
KernelStack:        7560 kB
PageTables:        62128 kB
NFS_Unstable:          0 kB
Bounce:                0 kB
WritebackTmp:          0 kB
CommitLimit:    61864224 kB
Committed_AS:    8789664 kB
VmallocTotal:   34359738367 kB
VmallocUsed:      527296 kB
VmallocChunk:   34292122604 kB
HardwareCorrupted:     0 kB
AnonHugePages:    262144 kB
HugePages_Total:    4096
HugePages_Free:     2048
HugePages_Rsvd:        0
HugePages_Surp:        0
Hugepagesize:       2048 kB
DirectMap4k:      141312 kB
DirectMap2M:     9279488 kB
DirectMap1G:    124780544 kB

Only the hugepages beyond to node1 was mapped. I was told host(having 
64bit OS) cannot allocate memory while node0 has 2048 free hugepages,why?
Dose anyone encountered the similar problem ever?
Any response will be appreciated!
Thanks!