Upper Bounds on Performance Measures of Heterogeneous <svg style="vertical-align:-0.252pt;width:68.0625px;" id="M1" height="15.5875" version="1.1" viewBox="0 0 68.0625 15.5875" width="68.0625"  xmlns="http://www.w3.org/2000/svg">
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<table>Average waiting times in queue for a moderately loaded system, <svg height="15.4625" id="M124" style="vertical-align:-3.56265pt" version="1.1" viewbox="0 0 48.900002 15.4625" width="48.900002" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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Mathematical Problems in Engineering

fig4

Figure 4

Figure 4: Upper Bounds on Performance Measures of Heterogeneous <svg style="vertical-align:-0.252pt;width:68.0625px;" id="M1" height="15.5875" version="1.1" viewBox="0 0 68.0625 15.5875" width="68.0625"  xmlns="http://www.w3.org/2000/svg">
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				<tspan style="font-size: 17.93px; " x="41.030704" y="0">/</tspan>
				<tspan style="font-size: 17.93px; " x="46.016079" y="0">𝑐</tspan>
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</svg> Queues 

Mathematical Problems in Engineering

Upper Bounds on Performance Measures of Heterogeneous 𝑀 / 𝑀 / 𝑐 Queues

Figure 4

Upper Bounds on Performance Measures of Heterogeneous Queues