CN106055436A - Method for testing QPI data lane gradient function - Google Patents

Abstract

The invention discloses a method for testing a QPI data lane delete function, which is characterized in that in a server product of CPU application which is provided with an XDP interface and supports the QPI data lane delete function, under the condition of starting the data lane delete function, an ITP tool is used for injecting errors into one half-width link of QPI, so that the half-width link cannot normally carry out data transmission between CPUs, the interruption of the QPI data lane data transmission in practical application is simulated, and when one half-width link is in fault and stops working, whether the other half-width link continues the data transmission or not is detected, and the phenomenon of server crash cannot occur, so that the QPI delete function is tested. The method has the advantages of simple operation and strong practicability, can accurately detect the QPI Data Lane gradient function, and effectively ensures the reliability and the safety of the server.

Description

A method to test the function of QPI data lane Degrade

technical field

The invention relates to the technical field of server testing, in particular to a method for testing QPI data lane Degrade functions using ITP tools, and a method for testing QPI data lane Degrade functions using ITP tools based on an Intel platform.

Background technique

With the continuous development of IT technology, traditional information services and increasingly powerful cloud computing services, the requirements for server security and reliability are getting higher and higher. As a server product provider, whether a server is in the research and development stage or the production stage, it is necessary to conduct security tests on the product, so as to strictly guarantee the security of the product, which is mainly reflected in the RAS function.

RAS is the abbreviation of Reliability (reliability), Availability (effectiveness), Serviceability (suitability).

The QPI bus is based on packet-based, high-bandwidth, and low-latency point-to-point interconnect technology (point to point interconnect), with a speed of 9.6GT/s (9.6G data can be transmitted per second). Each connection (link) includes 20 data lanes for RX and TX respectively. 10 consecutive data lanes can be regarded as a half-width link. When any half-width link fails, the other half-width link continues to maintain data Transmission, to ensure normal data transmission between CPUs, which is one of the CPU QPI RAS features.

Intel's QuickPath Interconnect technology is abbreviated as QPI, which translates to fast channel interconnection. In fact, its official name is CSI, Common System Interface, which is used to realize the direct interconnection between chips, instead of connecting to the north bridge through FSB, and the spearhead is directed at AMD's HT bus. Whether it is speed, bandwidth, bandwidth per pin, power consumption, etc., all specifications must exceed the HT bus.

The QPI Data Lane Degrade function in the CPU QPI bus RAS function is that when a half-width link fails and cannot transmit data, the QPI link automatically reduces the bit width to ensure that the other half-width link continues to work, ensuring that the QPI bus will not System downtime due to interruption of data transmission.

Contents of the invention

The technical problem to be solved in the present invention is: in order to solve the above-mentioned problem, the present invention proposes a kind of method that uses ITP tool to test QPI data lane (link) Degrade function, a kind of method that uses ITP tool to test QPIdata lane Degrade function based on Intel platform method.

The technical scheme adopted in the present invention is:

A method for testing the QPI data lane Degrade function, the method is provided with an XDP interface, in a server product that supports the CPU application of the QPI data lane Degrade function, when the data lane Degrad function is turned on, one of the QPIs is transferred by an ITP tool The half-width link injects errors so that it cannot perform normal data transmission between CPUs to simulate the interruption of QPI data lane data transmission in actual applications, and detects that when one of the half-width links fails and stops working, the other half-width link Whether the road continues to transmit data without server downtime, so as to test the function of QPIDegrade. The test method is simple in operation and strong in practicability, can accurately detect the QPI Data Lane Degrade function, and effectively ensures the reliability and security of the server.

Integration Test Platform, referred to as ITP, full name integration test platform.

The method checks the RX/TX state of the QPI data lane (link) and the current CPU working state through a script to judge whether the QPI Degrade function takes effect.

The whole process mainly uses the ITP tool to inject errors into one of the half-width Data Lanes through the Cscripts script on the python platform when QPIData Lane Degrade is enabled, and check the QPI datalane RX/TX status and the current CPU working status judgment function through the script. Is it in effect.

The method operation flow is as follows:

1) Prepare Windows test machine and Windows operating system;

2) Connect the testing machine and the control terminal with the ITP tool;

3) Enable the QPI data lane degrade function;

4) Input commands on the control terminal to view the current QPI RX/TX Link status;

5) The input command injection error of the control terminal makes any half-width in the current RX/TX unavailable;

6) Input commands on the control terminal to view the current QPI RX/TX Link status status:

7) Check the system for blue screen or downtime.

The beneficial effects of the present invention are:

The testing method of the invention is simple in operation, strong in practicability, can accurately detect the QPI Data Lane Degrade function, and effectively ensures the reliability and safety of the server.

Description of drawings

Fig. 1 is the procedure flow chart of the method of the present invention.

detailed description

Below in conjunction with accompanying drawing of description, the present invention is further described according to specific embodiment:

Example 1:

A method for testing the QPI data lane Degrade function, the method is provided with an XDP interface, in a server product that supports the CPU application of the QPI data lane Degrade function, when the data lane Degrad function is turned on, one of the QPIs is transferred by an ITP tool The half-width link injects errors so that it cannot perform normal data transmission between CPUs to simulate the interruption of QPI data lane data transmission in actual applications, and detects that when one of the half-width links fails and stops working, the other half-width link Whether the road continues to transmit data without server downtime, so as to test the function of QPIDegrade. The test method is simple in operation and strong in practicability, can accurately detect the QPI Data Lane Degrade function, and effectively ensures the reliability and security of the server.

Integration Test Platform, referred to as ITP, full name integration test platform.

Example 2

On the basis of Embodiment 1, the method described in this embodiment checks the RX/TX status of the QPI data lane (link) and the current CPU working status through a script to determine whether the QPI Degrade function takes effect.

The whole process mainly uses the ITP tool to inject errors into one of the half-width Data Lanes through the Cscripts script on the python platform when QPIData Lane Degrade is turned on, and check the QPI datalane RX/TX status and the current CPU working status judgment function through the script. Is it in effect.

Example 3

As shown in Figure 1, on the basis of embodiment 1 or 2, the operation process of the method described in this embodiment is as follows:

1) Prepare Windows test machine and Windows operating system;

2) Connect the testing machine and the control terminal with the ITP tool;

3) Enable the QPI data lane degrade function;

4) Input commands on the control terminal to view the current QPI RX/TX Link status;

5) The input command injection error of the control terminal makes any half-width in the current RX/TX unavailable;

6) Input commands on the control terminal to view the current QPI RX/TX Link status status:

7) Check the system for blue screen or downtime.

The above embodiments are only used to illustrate the present invention, but not to limit the present invention. Those of ordinary skill in the relevant technical fields can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, all Equivalent technical solutions also belong to the category of the present invention, and the scope of patent protection of the present invention should be defined by the claims.

Claims (3)

1. the method testing QPI data lane Degrade function, it is characterised in that: described method is being provided with XDP Interface, supports, in the server product of CPU application of QPI data lane Degrade function, opening data lane In the case of Degrad function, by ITP instrument, a QPI wherein half-breadth link is injected mistake so that it is cannot be normally carried out Data transmission between CPU, simulates in actual application the QPI data lane data-transmission interruptions of appearance, and detection ought wherein one When bar half-breadth link failure quits work, whether another half-breadth link continues data transmission, without occurring server to delay machine Phenomenon, thus test QPI Degrade function.

A kind of method testing QPI data lane Degrade function the most according to claim 1, it is characterised in that By script, described method checks that the RX/TX state of QPI data lane and current CPU duty judge QPI Degrade Whether function comes into force.

A kind of method testing QPI data lane Degrade function the most according to claim 1 and 2, its feature exists In, described method operating process is as follows:

1) Windows test machine and Windows operating system are got out；

2) with ITP instrument connecting test machine and control end；

3) QPI data lane degrade function is opened；

4) control end input instruction, check current QPI RX/TX Link status state；

5) control end input instruction and inject mistake, half-breadth any in current RX/TX is become down state；

6) control end input instruction, check current QPI RX/TX Link status state:

7) whether system of checking has blue screen or machine phenomenon of delaying.