in opsworks_ganglia/files/default/haproxy.rb [70:79]
def add_frontend_totals(info)
backend = 'total'
data[backend] ||= {}
data[backend][:request_rate_per_second] = (data[backend][:request_rate_per_second] || 0 ) + info[33].to_i
data[backend][:current_sessions] = (data[backend][:current_sessions] || 0) + info[4].to_i
data[backend][:max_sessions] = (data[backend][:max_sessions] || 0 ) + info[5].to_i
data[backend][:bytes_in] = (data[backend][:bytes_in] || 0 ) + info[8].to_i / 1024
data[backend][:bytes_out] = (data[backend][:bytes_out] || 0 ) + info[9].to_i / 1024
end