System and method for improving TCP performance in virtualized environments

• US 10,116,574 B2
• Filed: 05/23/2016
• Issued: 10/30/2018
• Est. Priority Date: 09/26/2013
• Status: Active Grant

• Current Assignee: Juniper Networks Incorporated
• Original Assignee: Juniper Networks Incorporated
• Inventors: Kompella, Ramana, Singh, Sumeet
• Primary Examiner(s): Chou, Albert T
• Application Number:
  US15/162,589
• Publication Number:
  US 20160269302A1
• Time in Patent Office: 890 Days
• CPC Class Codes: G06F 2009/45595 Network integration; Enabling network access in virtual machine instances
• CPC Class Codes: G06F 9/45558 Hypervisor-specific management and integration aspects
• CPC Class Codes: H04L 41/00 Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
• CPC Class Codes: H04L 41/0893 Assignment of logical groups to network elements
• CPC Class Codes: H04L 47/12 Avoiding congestion; Recovering from congestion
• CPC Class Codes: H04L 47/193 at the transport layer, e.g. TCP related
• CPC Class Codes: H04L 47/20 Traffic policing
• CPC Class Codes: H04L 47/2475 for supporting traffic characterised by the type of applications
• CPC Class Codes: H04L 47/2483 involving identification of individual flows
• CPC Class Codes: H04L 47/27 Evaluation or update of window size, e.g. using information derived from acknowledged [ACK] packets
• CPC Class Codes: H04L 47/28 in relation to timing considerations
• CPC Class Codes: H04L 69/161 Implementation details of TCP/IP or UDP/IP stack architecture; Specification of modified or new header fields

Abstract

Example embodiments described herein provide systems and methods for transmitting data packets between a protocol sender and a protocol receiver in a cloud environment, having either the protocol sender or the protocol receiver residing within a virtualized host. A protocol acceleration module may observe the data packets transmitted along the data path between the protocol sender and the protocol receiver using protocol stack configuration information of the protocol sender. The protocol acceleration module may override the protocol stack configuration information with policy-based protocol stack configuration information such that data packets transmitted from the protocol acceleration module to the protocol receiver use the policy-based protocol stack configuration information. For various embodiments, the protocol stack configuration information of the protocol sender is not modified.

Claims

1. A system, comprising:

a memory that stores computer executable components;

a processor that executes computer executable components stored in the memory, wherein the computer executable components comprise;

a data flow identification component configured to identify first configuration data indicative of TCP stack configuration information for a data flow transmitted between a protocol sender and a protocol receiver, wherein at least one of the protocol sender and the protocol receiver resides within a virtualized host;

a protocol override component configured to override the first configuration data with second configuration data indicative of policy-based TCP stack configuration information for the data flow;

a transmitter component configured to transmit the data flow to the protocol receiver using the second configuration data indicative of the policy-based TCP stack configuration; and

a diagnostics component configured to generate diagnostics data indicative of TCP performance associated with the data flow and determine, based on the diagnostics data, that the data flow to the protocol receiver is being slowed by resource scheduling being performed by the virtualized host.

2. The system of claim 1, wherein

generating diagnostics data indicative of TCP performance associated with the data flow includes determining round-trip times associated with transmitting the data flow to the protocol receiver.

3. The system of claim 2, wherein the protocol override component is configured to adjust the second configuration data based on the diagnostic data.

4. The system of claim 2, wherein the diagnostics data comprises one or more TCP connection characteristics associated with the data flow.

5. The system of claim 1, wherein the computer executable components further comprise:

a measurement component configured to generate measurement data indicative of a measurement associated with a data path between the protocol sender and the system.

6. The system of claim 5, wherein the protocol override component is configured to adjust the second configuration data based on the measurement data.

7. The system of claim 1, wherein the computer executable components further comprise:

a measurement component configured to generate measurement data indicative of a measurement associated with a data path between the system and the protocol receiver.

8. The system of claim 7, wherein the protocol override component is configured to adjust the second configuration data based on the measurement data.

9. A method, comprising:

determining, by a system comprising a processor, first configuration data indicative of TCP stack configuration information for a data flow transmitted by a protocol sender;

overriding the first configuration data with second configuration data indicative of policy-based TCP stack configuration information for the data flow;

sending the data flow to a protocol receiver based on the second configuration data indicative of the policy-based TCP stack configuration, wherein at least one of the protocol sender and the protocol receiver resides within a virtualized host;

generating diagnostic data indicative of TCP performance of one or more data packets corresponding to the data flow transmitted by the protocol sender; and

determining, based on the diagnostic data, that the data flow transmitted by the protocol sender is being slowed by resource scheduling being performed by the virtualized host.

10. The method of claim 9, wherein the overriding comprises overriding the first configuration data with the second configuration data without altering the TCP stack configuration information.

11. The method of claim 9, further comprising:

observing a plurality of data flows transmitted between the protocol sender and the protocol receiver to facilitate the identifying the first configuration data.

12. The method of claim 9, further comprising:

adjusting the second configuration data based on the diagnostic data.

13. The method of claim 9, further comprising:

generating measurement data indicative of measurement information associated with a data path between the system and the protocol sender; and

adjusting the second configuration data based on the measurement data.

14. The method of claim 9, further comprising:

generating measurement data indicative of measurement information associated with a data path between the system and the protocol receiver; and

adjusting the second configuration data based on the measurement data.

15. The method of claim 9, further comprising:

storing the second configuration data in a flow data structure shared between the protocol sender and the protocol receiver.

16. A non-transitory machine-readable storage medium comprising executable instructions that, when executed by a processor, facilitate performance of operations, comprising:

generating configuration data indicative of policy-based TCP stack configuration information for a data flow transmitted between a protocol sender and a protocol receiver, wherein at least one of the protocol sender and the protocol receiver resides within a virtualized host;

generating diagnostic data indicative of TCP performance associated with the data flow;

determining, based on the diagnostics data, that the data flow transmitted between the protocol sender and the protocol receiver is being slowed by resource scheduling being performed by the virtualized host;

adjusting the configuration data based on the diagnostic data; and

transmitting the data flow to the protocol receiver based on the configuration data indicative of the policy-based TCP stack configuration.

17. The non-transitory machine-readable storage medium of claim 16, wherein the operations further comprise:

identifying other configuration data indicative of TCP stack configuration information for the data flow.

18. The non-transitory machine-readable storage medium of claim 17, wherein the operations further comprise:

overriding the other configuration data with the configuration data indicative of the policy-based TCP stack configuration information.

19. The non-transitory machine-readable storage medium of claim 16, wherein the operations further comprise:

generating measurement data indicative of measurement information associated with a data path between the protocol sender and a protocol acceleration module associated with the processor.

20. The non-transitory machine-readable storage medium of claim 19, wherein the operations further comprise:

adjusting the configuration data based on the measurement data.