| Article ID: | iaor1988797 |
| Country: | Germany |
| Volume: | 11 |
| Start Page Number: | 97 |
| End Page Number: | 100 |
| Publication Date: | Feb 1989 |
| Journal: | OR Spektrum |
| Authors: | Wahl J. van der |
It is shown that the throughput of a closed exponential queueing network is nondecreasing in the number of jobs in the system if the service rate in each station is nondecreasing in the number of jobs in that queue. The line of proof seems to be extendable to a variety of networks without a product form equilibrium.