ABAP Message Server Http Availability in red status

Hi Experts,

We are configuring management dashboard in solman 7.1 for reporting performance and Availability of SAP systems in Landscape. The output on

dashboard graph is very bad (a large section is in red status).I could see that "ABAP Message Server Http Availability" is in completely red (refer screen shot) status for many abap systems. Please let us know how to resolve this.Again in system performance graph we can see red section. Can you plz let us know which parameter does this graph uses to determine performance of system. How can we customize this ie to set the threshold as per our requirement.

Thanks

Aditya Roushan