Os::commit_memory error

I try to run Rancher on Docker 1.9.1 and got this error:

OpenJDK 64-Bit Server VM warning: INFO: os::commit_memory(0x000075f8905bb000, 2555904, 1) failed; error='Operation not permitted' (errno=1)
    # There is insufficient memory for the Java Runtime Environment to continue.
    # Native memory allocation (malloc) failed to allocate 2555904 bytes for committing reserved memory.
    # An error report file with more information is saved as:
    # /tmp/hs_err_pid11.log
    160418  1:49:26 [Note] /usr/sbin/mysqld (mysqld 5.5.47-0ubuntu0.14.04.1-log) starting as process 26 ...

I suppose that something must be set by sysctl but don’t know what.

How much RAM does the host have?

The host have 8GB of RAM and Docker can use it.