Managing capacity in a data center by suspending tenants

• US 9,497,138 B2
• Filed: 09/18/2014
• Issued: 11/15/2016
• Est. Priority Date: 11/09/2011
• Status: Active Grant

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Inventors: Bjerke, Marshall Scot, Tobkes, Robert, Cooke, Bryan David, Miller, Andrew Robert Sr., Phillips, Jonathan Wayne, Tkatch, Alexander M., Shutt, David R.
• Primary Examiner(s): Shin, Kyung H
• Application Number:
  US14/490,217
• Publication Number:
  US 20150006738A1
• Time in Patent Office: 789 Days
• Field of Search: 709/223, 709/226, 709/228, 718/1
• US Class Current: 1/1
• CPC Class Codes: G06F 16/00 Information retrieval; Database structures therefor; File system structures therefor
• CPC Class Codes: G06F 8/60 Software deployment
• CPC Class Codes: G06F 9/00 Arrangements for program control, e.g. control units program control for peripheral devices G06F13/10
• CPC Class Codes: G06F 9/445 Program loading or initiating bootstrapping G06F9/4401; security arrangements for program loading or initiating G06F21/57
• CPC Class Codes: G06F 9/455 Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
• CPC Class Codes: G06F 9/4843 by program, e.g. task dispatcher, supervisor, operating system
• CPC Class Codes: G06F 9/505 considering the load
• CPC Class Codes: G06F 9/5072 Grid computing
• CPC Class Codes: G06F 9/5077 Logical partitioning of resources; Management or configuration of virtualized resources specific details on emulation or internal functioning of virtual machines G06F9/455
• CPC Class Codes: G06F 9/5083 Techniques for rebalancing the load in a distributed system
• CPC Class Codes: H04L 47/70 Admission control; Resource allocation
• CPC Class Codes: H04L 65/40 Support for services or applications
• CPC Class Codes: H04L 67/01 Protocols
• CPC Class Codes: H04L 67/10 in which an application is distributed across nodes in the network software deployment G06F8/60; multiprogramming arrangements G06F9/46
• CPC Class Codes: H04L 67/1001 for accessing one among a plurality of replicated servers
• CPC Class Codes: H04L 67/1008 based on parameters of servers, e.g. available memory or workload monitoring of computer activity G06F11/30
• CPC Class Codes: H04L 67/1027 Persistence of sessions during load balancing
• CPC Class Codes: H04L 67/1031 Controlling of the operation of servers by a load balancer, e.g. adding or removing servers that serve requests
• CPC Class Codes: H04L 67/535 Tracking the activity of the user network monitoring arrangements H04L43/00; recording of computer activity G06F11/34
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]

Abstract

A tenant comprising one or more users receives services from a cloud computing system (“CCS”). The CCS determines when a tenant is not using any services, and if so, the CCS initiates a tenant suspension process. The tenant suspension process involves suspending various asynchronous computing processes for the tenant, which execute otherwise execute even if no users of the tenant are currently accessing the CCS. After a period of non-use of the CCS, the tenant is suspended. The tenant is returned to an active state automatically when a user of the tenant logs-on to receive services.

Claims

1. A computing device for conserving computing resources in a cloud computing system, comprising:

a central processing unit;

a system memory; and

a mass storage device, the mass storage device having computer-executable instructions which, when loaded into the system memory and executed by the central processing unit, cause the computing device to

initiate at least one administrative computing process for a tenant in the cloud computing system, the tenant associated with one or more users;

determine that no user of the tenant has used the cloud computing system within a period of time;

wait for the at least one administrative computing process for the tenant in the cloud computing system to complete;

suspend the tenant and indicating the tenant as suspended in the cloud computing system, in response to determining that no user of the tenant has used the cloud computing system within the period of time;

receive a request from a user of the tenant;

determine that the tenant is suspended; and

allow the at least one administrative computing process for the tenant to be reinstated.

2. The computing device of claim 1, wherein determining that no user of the tenant has used the cloud computing system within a period of time comprises:

periodically accessing a user history log; and

determining that a time since last user of the tenant has logged-off from the cloud computing system exceeds a defined limit.

3. The computing device of claim 1, wherein determining that no user of the tenant has used the cloud computing system within a period of time comprises:

accessing a timer associated with the tenant, the timer indicating the duration since a last user of the tenant has logged-off; and

determining that the timer is greater than a predetermined value.

4. The computing device of claim 1, wherein the at least one administrative computing process comprises a process determining a level of memory storage utilized by stored data associated with the tenant.

5. The computing device of claim 4, wherein the computer-executable instructions cause the computing device to perform a memory backup of the stored data prior to indicating the tenant as suspended in the cloud computing system.

6. The computing device of claim 1, wherein the computer-executable instructions cause the computing device to modify a tenant state indication associated with a tenant state table to indicate that the tenant is in an active state.

7. A computing device for conserving computing resources in a cloud computing system, comprising:

a central processing unit;

a system memory; and

a mass storage device, the mass storage device having computer-executable instructions which, when loaded into the system memory and executed by the central processing unit, cause the computing device to

initiate an asynchronous computing process for a tenant in a cloud computing system, the tenant associated with one or more users,

determine that no user of the tenant has used the cloud computing system within a period of time,

wait for the asynchronous computing process for the tenant in the cloud computing system to complete execution,

suspend the tenant and indicate the tenant in a tenant state table as being in a suspended state in the cloud computing system, if no user of the tenant has used the cloud computing system within the period of time,

receive a request from a user of the tenant,

determine that the tenant is indicated as in the suspended state in the tenant state table, and

allow the at least one asynchronous computing process for the tenant to execute.

8. The computing device of claim 7, further storing instructions that when executed cause the computing device to update the tenant state table to indicate the tenant as being in an active state in response to the request.

9. The computing device of claim 7, further storing instructions that when executed cause the computing device to:

periodically access a user history log;

determine a time duration since when a last user of the tenant has logged-off from the cloud computing system exceeds a time limit, wherein the time duration is dynamically determined based on a cloud computing system load; and

update the tenant state table stored in memory to indicate the tenant as being in a suspended state, in response to determining the time duration since the last user of the tenant has logged-off from the cloud computing system exceeds the time limit.

10. The computing device of claim 7, further storing instructions that when executed cause the computing device to:

access a timer associated with the tenant, the timer indicating a duration since a last user of the tenant has logged-off from the cloud computing system,

determine that the timer is greater than a predetermined value, and

update a tenant state table from memory to indicate the tenant as being in a suspended state, in response to determining that the timer is greater than a predetermined value.

11. The computing device of claim 7, further storing instructions that when executed cause the computing device to perform a memory backup of stored data of the tenant prior to indicating the tenant as being in a suspended state.

12. The computing device of claim 7, further storing instructions that when executed cause the computing device to access a user history log to determine that no user of the tenant has used the cloud computing system for a period of time.

13. A method for conserving computing resources in a cloud computing system, comprising:

initiating an asynchronous computing process for a tenant in a cloud computing system, the tenant associated with one or more users;

determining that no user of the tenant has used the cloud computing system within a period of time;

waiting for the asynchronous computing process for the tenant in the cloud computing system to complete execution;

suspending the tenant and indicate the tenant in a tenant state table as being in a suspended state in the cloud computing system, if no user of the tenant has used the cloud computing system within the period of time;

receiving a log-on request from a user of the tenant;

determining that the tenant is indicated as in the suspended state in the tenant state table; and

allowing the at least one asynchronous computing process for the tenant to execute.

14. The method of claim 13, further comprising updating the tenant state table to indicate the tenant as being in an active state in response to the request.

15. The method of claim 13, further comprising:

accessing a user history log;

determining a time duration since when a last user of the tenant has logged-off from the cloud computing system exceeds a time limit, wherein the time duration is dynamically determined based on a cloud computing system load; and

updating the tenant state table stored in memory to indicate the tenant as being in a suspended state, in response to determining the time duration since the last user of the tenant has logged-off from the cloud computing system exceeds the time limit.

16. The method of claim 13, further comprising:

accessing a timer associated with the tenant, the timer indicating a duration since a last user of the tenant has logged-off from the cloud computing system,

determining that the timer is greater than a predetermined value, and

updating a tenant state table from memory to indicate the tenant as being in a suspended state, in response to determining that the timer is greater than a predetermined value.

17. The method of claim 13, further comprising performing a memory backup of stored data of the tenant prior to indicating the tenant as being in a suspended state.

18. The method of claim 13, further comprising determining that no user of the tenant has used the cloud computing system for a period of time.