NComputing VSPACE U170 Скачать руководство пользователя страница 7

                                                                                                        

 

NComputing is a registered trademark.  Other trademarks and trade names are the property of their respective owners. Copyright 2010.  

The following topologies give valid examples how to count a USB “hop” and how not to exceed 
them.  We include two other valid topologies later in the document.  
 
This is a daisy chained topology of 5 hops. Note that the power hubs add the ability to hop and 
an extra USB port in the first two U170 devices.  
 

 

This is a topology of only 3 hops. Note that the first power hub add the ability move up to 5 
meters from the host and then split out four U170 devices (at up to another 5 meters).  And the 
second series of powered hubs are optional but shown here add extra USB ports for flash drives, 
a printer or other USB devices.  
 

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Содержание VSPACE U170

Страница 1: ...achine resulting in wasted resources and wasted power NComputing takes this excess power and shares it among multiple users resulting in more efficient usage of resources and hence lower costs easier...

Страница 2: ...logy in advance to make sure you understand what it will look like in advance performance and power considerations noted below and what cables and hubs will be needed We will provide a topology check...

Страница 3: ...cessor utilization that enables all tasks to be serviced equally This means that even if the CPU usage spikes to 100 vSpace and the operating system evenly distribute the available CPU capacity across...

Страница 4: ...andwidth depending on whether they have one or two USB buses The table below describes the maximum bandwidth of the USB bus for modern PC motherboards PCs that contain multiple EHCI controllers will h...

Страница 5: ...troller is the number of USB buses In the example below the PC has two USB buses To take advantage of multiple controllers connect any downstream hubs back to the PC directly rather than connecting al...

Страница 6: ...is really no difference between running 10 users on a single multi user PC or running 10 stand alone PC s Just make sure to connect the host to the LAN with the proper allowances for multiple users to...

Страница 7: ...cument This is a daisy chained topology of 5 hops Note that the power hubs add the ability to hop and an extra USB port in the first two U170 devices This is a topology of only 3 hops Note that the fi...

Страница 8: ...no need for a USB hub if there are enough ports available We connected the four U170 devices directly to four USB ports in the back as shown in the picture below To demonstrate the performance we star...

Страница 9: ...t 85 and memory usage is less than 600MB of memory while all devices are running full screen video at the same time This shows that this low cost dual core CPU has no problem handing the four streams...

Страница 10: ...ull screen videos depending upon the video format size decoder player and USB bus implementation can play without a noticeable frames dropping If your usage pattern is to use a lot of full screen vide...

Страница 11: ...xceed 100 As long as these two key parameters are appropriately sized for the application the performance for each U170 user should be comparable to that of the host PC U170 10 User Environment In our...

Страница 12: ...Computing is a registered trademark Other trademarks and trade names are the property of their respective owners Copyright 2010 Five U170 devices connected to a hub Four U170 devices connected to a hu...

Страница 13: ...across a total of 10 users The applications are listed in Table 1 Table 1 Active Applications Application List Microsoft Paint Microsoft Word Microsoft Excel Microsoft PowerPoint Microsoft Internet Ex...

Страница 14: ...this configuration The total set of applications and video clips playing are captured in the matrix below App1 App2 App3 App4 Multi Media Clip User 1 host Windows Task Manager User 2 640 x 360 video...

Страница 15: ...e and multimedia applications with plenty of CPU and memory resources to spare These environments demonstrate how NComputing vSpace desktop virtualization technology can utilizes excess PC computing c...

Страница 16: ...1 PC Lenovo 3000 H Series Host2 PC Gateway DX 4822 03 Nine U170 kit 10 LCD monitors 10 Keyboards and mice 1 D Link 7 port USB hub 1 D Link 5 port USB hub Two 5 meter USB repeaters Setting up this demo...

Страница 17: ...he screens flash by so quickly you cannot actually see what is going on Nobody types that fast or switches screens that quickly in real life Benchmarking a shared computing or desktop virtualization e...

Страница 18: ...hrough its simulated work load we can observe the system resource utilization through the performance monitor Ideally CPU performance should average below 90 memory utilization should generally be les...

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