rsync hangs for unexpected time

[mynkkmr]

# Running rsync command to send file from one server to another using npm rsync module.

With following options set :

{ _executable: 'rsync',
_executableShell: '/bin/sh',
_sources: [ ----"source server"---- ],
_destination: '--------destination server-----',
_patterns: [],
_options: { rsh: 'ssh', a: null, v: null, z: null, h: null },
_outputHandlers: { stdout: null, stderr: null },
_debug: false }

It hangs for unexpected time & without any error.

In my case my directory size is more than 200 MB.