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

[Zhang, Jerry]

Hi,

   Please provide the environment info such as kernel version, DPDK version and the reproduce steps in detail.

   Thanks!

>-----Original Message-----
>From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of zhangsha (A)
>Sent: Friday, January 30, 2015 7:40 PM
>To: dev at dpdk.org
>Subject: [dpdk-dev] mmap failed: Cannot allocate memory when init dpdk eal
>
>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!
>