VIRTUAL DESKTOP INFRASTRUCTURE (VDI) CACHING USING CONTEXT

• US 20140325372A1
• Filed: 04/29/2013
• Published: 10/30/2014
• Est. Priority Date: 04/29/2013
• Status: Active Grant

• Current Assignee: Omnissa, LLC
• Original Assignee: VMware, Inc. (Broadcom, Inc.)
• Inventors: Spracklen, Lawrence, Agrawal, Banit, Bidarkar, Rishi
• Granted Patent: US 9,448,816 B2
• Time in Patent Office: Days
• US Class Current: 715/740
• CPC Class Codes: G06F 12/121 using replacement algorithms
• CPC Class Codes: G06F 3/1454 involving copying of the display data of a local workstation or window to a remote workstation or window so that an actual copy of the data is displayed simultaneously on two or more displays, e.g. teledisplay
• CPC Class Codes: G06F 9/452 Remote windowing, e.g. X-Window System, desktop virtualisation protocols for virtual reality H04L67/131
• CPC Class Codes: G09G 2360/121 using a cache memory
• CPC Class Codes: G09G 2370/02 Networking aspects
• CPC Class Codes: G09G 2370/022 Centralised management of display operation, e.g. in a server instead of locally

Abstract

In one embodiment a method for storing a remote desktop GUI image block in a cache including a plurality of persistence levels is described. The method is comprised of maintaining each persistence level in the plurality of persistence levels; identifying an event associated with an update to the remote desktop GUI; determining a context for the event; selecting one of the persistence levels for the event based on the context; and storing an image block corresponding to the update in the selected one of the persistence levels.

Claims

1. A method for storing a remote desktop graphical user interface (GUI) image block in a cache, the cache including a plurality of persistence levels, the method comprising:

maintaining each persistence level in the plurality of persistence levels;

identifying an event associated with an update to the remote desktop GUI;

determining a context for the event;

selecting one of the persistence levels for the event based on the context; and

storing an image block corresponding to the update with the selected one of the persistence levels.

2. The method of claim 1, wherein maintaining comprises maintaining each persistence level in the plurality of persistence levels using a different cache replacement process, wherein the cache replacement process for each persistence level is based on a different level of persistence to evict image blocks of the remove desktop GUI from each persistence level.

3. The method of claim 1, wherein the event comprises a discontinuity of workflow that is determined for a user using the remote desktop GUI.

4. The method of claim 3, wherein the discontinuity is determined based on a change of an image of the remote desktop GUI.

5. The method of claim 3, wherein storing the image block comprises:

determining a current state of the image of the remote desktop GUI as the context, and

moving the image block from a lower persistence level to a higher persistence level if the image block corresponds to an image block in the current state of the image.

6. The method of claim 5, wherein:

different image blocks in the cache are classified differently according to the context for the remote desktop GUI, and

the different image blocks are moved to different persistence levels based on the different classifications.

7. The method of claim 3, further comprising storing the image of the remote desktop GUI in a persistence level in the plurality of persistence levels in response to determining the discontinuity, wherein the image is stored substantially before or after the discontinuity.

8. The method of claim 1, wherein:

the context comprises hints detected from the remote desktop GUI, and

the selected one of the persistence levels is determined based on the hints.

9. The method of claim 8, wherein image blocks for the remote desktop GUI are stored in a short term persistence level unless the hints detected from the remote desktop GUI indicate the image block should be stored in a higher level persistence level.

10. The method of claim 8, wherein:

the hints comprise information received from a peripheral device, and

the hints from the peripheral device are analyzed and used to select the one of the persistence levels in which to store the image block.

11. The method of claim 8, wherein:

the hints comprise information for an image type, and

different image types cause the image block to be stored in different persistence levels.

12. A non-transitory computer-readable storage medium containing instructions for storing a remote desktop graphical user interface (GUI) image block in a cache, the cache including a plurality of persistence levels, the instructions, when executed, for controlling a computer system to be configured for:

maintaining each persistence level in the plurality of persistence levels;

identifying an event associated with an update to the remote desktop GUI;

determining a context for the event;

selecting one of the persistence levels for the event based on the context; and

storing an image block corresponding to the update in the selected one of the persistence levels.

13. The non-transitory computer-readable storage medium of claim 12, wherein maintaining comprises maintaining each persistence level in the plurality of persistence levels using a different cache replacement process, wherein the cache replacement process for each persistence level is based on a different level of persistence to evict image blocks of the remove desktop GUI from each persistence level.

14. The non-transitory computer-readable storage medium of claim 12, wherein the event comprises a discontinuity of workflow that is determined for a user using the remote desktop GUI.

15. The non-transitory computer-readable storage medium of claim 14, wherein storing the image block comprises:

determining a current state of the image of the remote desktop GUI as the context, and

moving the image block from a lower persistence level to a higher persistence level if the image block corresponds to an image block in the current state of the image.

16. The non-transitory computer-readable storage medium of claim 15, wherein:

different image blocks in the cache are classified differently according to the context for the remote desktop GUI, and

the different image blocks are moved to different persistence levels based on the different classifications.

17. The non-transitory computer-readable storage medium of claim 12, wherein:

the context comprises hints detected from the remote desktop GUI, and

the selected one of the persistence levels is determined based on the hints.

18. The non-transitory computer-readable storage medium of claim 17, wherein image blocks for the remote desktop GUI are stored in a short term persistence level unless the hints detected from the remote desktop GUI indicate the image block should be stored in a higher level persistence level.

19. The non-transitory computer-readable storage medium of claim 17, wherein:

the hints comprise information received from a peripheral device or an image type, and

the hints from the peripheral device are analyzed and used to determine the persistence level in which to store the image block.

20. An apparatus configured to store a remote desktop graphical user interface (GUI) image block in a cache, the cache including a plurality of persistence levels, the apparatus comprising:

one or more computer processors; and

a non-transitory computer-readable storage medium comprising instructions, that when executed, control the one or more computer processors to be configured for;

maintaining each persistence level in the plurality of persistence levels;

identifying an event associated with an update to the remote desktop GUI;

determining a context for the event;

selecting one of the persistence levels for the event based on the context; and

storing an image block corresponding to the update in the selected one of the persistence levels.