EVGA PCoIP Technology Guia do Utilizador descarregar pdf (Página 21)

PCoIP Technology User Guide

20

The administrator can improve fairness by using

the Administrative Web Interface to set the

Device Bandwidth Target.

Example: Target Bandwidth Example

Here’s a simplified example of how the Device

Bandwidth Target setting works. The example

uses this scenario:

• Four users sharing a 100 Mbps link

• All users constantly active, using graphically-

intensive applications (approximately 60% of

display continually changing)

• Device Bandwidth Limit set to 0 Mbps (PCoIP

Technology adjusts bandwidth use depending

on congestion, to let users take advantage of

unused bandwidth)

• Bandwidth measured over 60 minutes at 5

second intervals

The examples below show what happens when

different Device Bandwidth Target setting are

used: 0 Mbps (no Target), 20 Mbps, 25 Mbps,

and 30 Mbps.

Device Bandwidth Target: 0 Mbps (no Target)

The figure below shows 4 users sharing a 100

Mbps link. Each user has Device Bandwidth

Target set to 0 Mbps (no Target).

Figure 8-1: Device Bandwidth Target: 0 (no

Target)

In the figure above, we can see:

• Many dips below 17 Mbps

• Obviously “unfair” network bandwidth use

(some users left with lower bandwidths)

Device Bandwidth Target: 20 Mbps

Now users have the Device Bandwidth Target

set to 20 Mbps.

Figure 8-2: Device Bandwidth Target: 20

Mbps

We now see:

• Bandwidth use clamps at 20 Mbps

• No user below “fair” bandwidth more than 20%

of the time

25 Mbps Device Bandwidth Target

The bandwidth parameters are now updated so

each user has the Device Bandwidth Target of

25 Mbps.

Figure 8-3: Device Bandwidth Target: 25

Mbps

We now see:

• 25 Mbps per connection is the network

capacity (100 Mbps / 4 users)

• Congestion management keeps bandwidth

tight around 25 Mbps

• Some dips down to 19 Mbps

Device Bandwidth Target: 30 Mbps

Finally, each user has the Device Bandwidth

Target configured to 30 Mbps.

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