On existing systems,
conventional scheduling methods use processors' utilization
to keep fairness among users' application tasks (processes).
As the systems have provided non-blocking I/O facilities for 
user-programs, new-types of applications that eagerly 
exploit I/O devices or network communications are coming out.
For these applications the bottlenecks of systems are not 
processor resources but I/O or network ones.
Therefore, conventional scheduling methods are old-fashioned
for these applications.
In this paper a brand-new scheduling scheme ``FMM scheme (Free Market
Mechanism scheme)'' is proposed for workstation cluster systems.
In the FMM scheme complicated
global schedulers are unnecessary and dynamic optimizations
are performed by user-programs. The FMM scheme provide the information 
disclosure mechanism which enable user-tasks to inexpensively access
information on loads, configurations and usages of system resources.
The FMM also presents fair node-level schedulers which take 
usages of I/Os or communications into account.