CN111400153A - A method, device and computer-readable storage medium for starting serial port log - Google Patents

Abstract

The embodiment of the present invention discloses a method, device and medium for starting a serial port log. When the server fails to complete the power-on self-test within a preset start-up time, it means that the current power-on self-test process is abnormal, and the server can be restarted at this time. server, and record the number of restarts. When the number of restarts of the server within the preset time period is greater than or equal to the preset threshold, it means that the server restarts several times in a row and still has a power-on self-test abnormality. At this time, the power-on self-test logging mode can be enabled to record the power-on of the server. Serial log of the self-check process. In this technical solution, when the power-on self-test is running normally, the log recording mode of the power-on self-test is not enabled, and the server can execute the power-on self-test process according to the conventional power-on self-test process, which does not take too long. Only when it is determined that the power-on self-test process of the server is abnormal, the log record mode of power-on self-test is enabled to record the serial port log of the power-on self-test process, so as to realize the fault detection of power-on self-test.

Description

A method, device and computer-readable storage medium for starting serial port log

technical field

The present invention relates to the technical field of servers, and in particular, to a method, a device and a computer-readable storage medium for starting a serial port log.

Background technique

With the advent of the era of big data, cloud computing, and artificial intelligence, the volume of Internet business and data has increased dramatically, and the load on the server has increased, which requires higher and higher link stability of the entire system. The health status of the server needs to be monitored in real time during the power-on and running process. During the startup and running process, for minor errors, the verification mechanism can be used to correct them, which has little impact on the server operation. In the event of a serious failure, it may cause system downtime, which will result in business interruption for customers, data loss, and unpredictable losses.

The operation of the server is divided into two stages, namely the Power On Self Test (POST) stage and the system operation stage, and the two stages are closely linked. In the POST stage, after the server is powered on, the Basic Input Output System (BIOS) will detect and initialize the hardware of the server. In this process, the BIOS plays a leading role. After the BIOS self-check is completed, it will start searching for And boot the system, then the BIOS will transfer control to the system, the role of the BIOS only interrupt processing and other basic purposes.

After the control right is transferred to the system, some faults of the server will be recorded in the system log and the baseboard management controller (BMC) log. We can analyze the system log and the BMC log to locate and analyze the problem. However, during the POST process, there are very few logs recorded by the BIOS and transmitted to the BMC, and there is no place to record the fault log for problems related to the BIOS itself. If there is a serious fault such as downtime during the POST process, there is no way to troubleshoot analytical positioning.

The most effective way to analyze such problems is to export and analyze the serial port log of the BIOS during the POST process, which requires enabling the debug mode of the BIOS, which is disabled by default. If you want to open, you need to redevelop the BIOS version and flash to the faulty server, which will cause the disappearance of the fault phenomenon.

It can be seen that how to realize the fault detection of the power-on self-check is a problem to be solved by those skilled in the art.

SUMMARY OF THE INVENTION

The purpose of the embodiments of the present invention is to provide a method, device and computer-readable storage medium for starting a serial port log, which can realize fault detection of power-on self-check.

To solve the above technical problems, an embodiment of the present invention provides a method for starting a serial port log, including:

When the server does not complete the power-on self-test within the preset startup time, restart the server, and record the number of restarts;

Determine whether the number of restarts of the server within a preset time period is greater than or equal to a preset threshold;

If so, enable the logging mode for POST.

Optionally, when the server does not complete the power-on self-check within the preset startup time, restarting the server, and recording the number of restarts includes:

When the server starts, determine whether the server completes the power-on self-check within the preset startup time;

If not, restart the server, trigger a preset watchdog program, and use the watchdog program to detect whether the server completes the power-on self-check within the preset startup time;

Correspondingly, judging whether the number of restarts of the server within the preset time period is greater than or equal to the preset threshold includes:

Determine whether the number of times the watchdog program is triggered within a preset time period is greater than or equal to a preset threshold.

Optionally, after the logging mode of the power-on self-test is enabled, the method further includes:

Determine whether the watchdog program is triggered within the second preset time period;

If not, the logging mode of the POST is turned off.

Optionally, after the logging mode of the power-on self-test is enabled, the method further includes:

When the server restarts and completes the power-on self-check, determine whether the time interval between the current restart time and the last server restart time is greater than or equal to a preset time limit;

If so, turn off the logging mode of the power-on self-test.

Optionally, after the logging mode of the power-on self-test is enabled, the method further includes:

When no abnormality occurs in the power-on self-test of the server for two consecutive times, the log recording mode of the power-on self-test is turned off.

Optionally, the logging mode for enabling the power-on self-check includes:

Adjust the preset flag bit of the power-on self-check logging program to a valid flag bit, so that the server can enable logging during power-on self-check;

Correspondingly, the disabling of the logging mode of the power-on self-test includes:

Adjust the pre-configured POST log recorder flag to an invalid flag so that the logging mode is disabled when the server is POST.

The embodiment of the present invention also provides a device for starting a serial port log, including a recording unit, a judging unit and an opening unit;

The recording unit is configured to restart the server when the server does not complete the power-on self-check within the preset startup time, and record the number of restarts;

The judging unit is configured to judge whether the number of restarts of the server within a preset time period is greater than or equal to a preset threshold; if so, trigger the opening unit;

The enabling unit is used for enabling the logging mode of the power-on self-test.

Optionally, the recording unit is specifically configured to judge whether the server has completed the power-on self-check within a preset startup time when the server is started; if not, restart the server and trigger a preset watchdog. a program, using the watchdog program to detect whether the server completes the power-on self-test within a preset startup time;

Correspondingly, the judging unit is specifically configured to judge whether the number of times the watchdog program is triggered within a preset time period is greater than or equal to a preset threshold.

Optionally, it also includes a second judgment unit and a closing unit;

The second judging unit is configured to judge whether the watchdog program is triggered within a second preset time period after the log recording mode of the power-on self-check is turned on; if not, trigger the shutdown unit;

The shutdown unit is configured to disable the logging mode of the power-on self-test.

Optionally, also includes a third judging unit and a closing unit;

The third judgment unit is configured to judge whether the time interval between the current restart time and the last server restart time is when the server restarts and completes the power-on self-test after the log recording mode of the power-on self-test is turned on. greater than or equal to a preset time limit; if so, trigger the shutdown unit;

The shutdown unit is configured to disable the logging mode of the power-on self-test.

Optionally, it also includes a closing unit;

The shutdown unit is configured to disable the log recording mode of the power-on self-test when no abnormality occurs in the server two consecutive power-on self-tests after the log-recording mode of the power-on self-test is turned on.

Optionally, the enabling unit is specifically configured to adjust the preset flag bit of the power-on self-check logging program to a valid flag bit, so that the server can start the log record during the power-on self-check;

The closing unit is specifically configured to adjust the preset flag bit of the power-on self-check logging program to an invalid flag bit, so that the log recording mode of the server is in a closed state during the power-on self-check.

The embodiment of the present invention also provides a device for starting a serial port log, including:

memory for storing computer programs;

The processor is configured to execute the computer program to implement the steps of the serial port log startup method according to any one of the above.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the method for starting a serial port log according to any one of the above is implemented A step of.

It can be seen from the above technical solutions that when the server does not complete the power-on self-test within the preset startup time, it means that the current power-on self-test process is abnormal, and the server can be restarted at this time, and the number of restarts can be recorded. Each time the server is restarted, the number of restarts is incremented by 1, and it is determined whether the number of restarts of the server within the preset time period is greater than or equal to the preset threshold. When the number of restarts of the server within the preset time period is greater than or equal to the preset threshold, it means that the server restarts several times in a row and the power-on self-test is still abnormal. Serial log of the POST process. In this technical solution, when the power-on self-test is running normally, the log recording mode of the power-on self-test is not enabled, and the server can execute the power-on self-test process according to the conventional power-on self-test process, which does not take too long. Only when it is determined that the power-on self-test process of the server is abnormal, the log record mode of power-on self-test is enabled to record the serial port log of the power-on self-test process, so as to realize the fault detection of power-on self-test.

Description of drawings

In order to explain the embodiments of the present invention more clearly, the following will briefly introduce the accompanying drawings that need to be used in the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention, which are not relevant to ordinary skills in the art. As far as personnel are concerned, other drawings can also be obtained from these drawings on the premise of no creative work.

1 is a flowchart of a method for starting a serial port log provided by an embodiment of the present invention;

2 is a schematic structural diagram of a device for starting a serial port log provided by an embodiment of the present invention;

FIG. 3 is a schematic diagram of a hardware structure of an apparatus for starting a serial port log according to an embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

In order to make those skilled in the art better understand the solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

Next, a method for starting a serial port log provided by an embodiment of the present invention is described in detail. 1 is a flowchart of a method for starting a serial port log provided by an embodiment of the present invention, and the method includes:

S101: When the server does not complete the power-on self-check within the preset startup time, restart the server and record the number of restarts.

The preset startup time can be set according to the time required for the power-on self-check when the server is running normally. For example, the preset start time can be set to 6 minutes. When the server is running normally, the power-on self-test process can generally be completed within 6 minutes.

After the server is turned on, if the power-on self-test is not completed within the preset startup time, it means that the power-on self-test is abnormal.

The abnormality of the power-on self-test may be a short-term abnormality or a fault abnormality. For short-term exceptions, restarting the server can solve the problem. After the server restarts, it enters the power-on self-test phase, and the power-on self-test can be completed within the preset startup time.

For abnormal faults, restarting the server often cannot solve the problem. After the server restarts, it enters the power-on self-check stage. If the server still cannot complete the power-on self-check within the preset startup time, the server will be restarted again. Each time the server is restarted, the number of restarts corresponding to the server is incremented by 1.

S102: Determine whether the number of restarts of the server within a preset time period is greater than or equal to a preset threshold.

If the server can complete the power-on self-test within the preset startup time after only one restart, it means that the last power-on self-test failure was caused by a short-term abnormality of the server, and the power-on self-test process does not need to be performed at this time. Serial log record. Therefore, in this embodiment of the present invention, the value of the preset threshold must be greater than 1. For example, the preset threshold can be set to 2.

The preset time period can be set based on the time taken for the power-on self-check when the server is running normally and the preset threshold. For example, the preset time period can be set to 30 minutes.

By setting a preset threshold to determine the number of restarts, you can reduce the impact of the server's short-term abnormality on the power-on self-check.

When the number of restarts of the server within the preset time period is greater than or equal to the preset threshold, it indicates that the power-on self-check is abnormal, and at this time, S103 can be executed. When the number of restarts of the server within the preset time period is less than the preset threshold, it means that the server can successfully complete the power-on self-check, and the operation can be ended at this time, and the server enters the system operation stage.

Taking the preset threshold value of 2 and the preset time period of 30 minutes as an example, when the server restarts for the first time, the number of restarts is 1. If checked, the server will be restarted for the second time, and the number of restarts will be 2. When the server is restarted for the second time, the number of restarts reaches the preset threshold. If the time interval between the first restart of the server and the second restart of the server is less than 30 minutes, it means that the server has restarted several times in a short time. can execute S103.

S103: Enable the log recording mode of the power-on self-test.

In this embodiment of the present invention, a power-on self-test log recording program may be preset, and when the log recording mode is enabled, the power-on self-test log record program starts to run, thereby recording the serial port log of the server during the power-on self-test process.

In a specific implementation, the logging mode can be started by setting a flag bit. The flag bits can be divided into valid flag bits and invalid flag bits. For example, the number 1 can be used to represent the valid flag bit, and the number 0 can be used to represent the invalid flag bit.

When the flag bit of the power-on self-test logging program is adjusted to a valid flag bit, the server will enable the logging mode during power-on self-test to record the serial port log of the server's power-on self-test process.

Recording the number of restarts is mentioned in S101, wherein, there may be multiple ways to record the number of restarts. One way may be to use a register for recording, and another way may be to set a watchdog program. The watchdog program can realize the function of timing detection. After starting the watchdog program once, it can detect whether the power-on self-test is completed within the preset startup time after the server restarts. The number of times the watchdog program is started is the number of server restarts.

In the specific implementation, when the server starts, it can be judged whether the server completes the power-on self-test within the preset starting time; when the server cannot complete the power-on self-test within the preset starting time, the server is restarted and the preset setting is triggered. Use the watchdog program to detect whether the server completes the power-on self-test within the preset startup time.

Correspondingly, it can be determined whether the number of times the watchdog program is triggered within the preset time period is greater than or equal to the preset threshold. When the number of times the watchdog program is triggered within the preset time period is greater than or equal to the preset threshold, S103 is executed.

By setting the watchdog program, you can not only detect whether the server has completed the power-on self-check within the preset startup time, but also use the number of watchdog program startups as the number of server restarts, without spending extra storage resources to record the server's Number of restarts.

It can be seen from the above technical solutions that when the server does not complete the power-on self-test within the preset startup time, it means that the current power-on self-test process is abnormal, and the server can be restarted at this time, and the number of restarts can be recorded. Each time the server is restarted, the number of restarts is incremented by 1, and it is determined whether the number of restarts of the server within the preset time period is greater than or equal to the preset threshold. When the number of restarts of the server within the preset time period is greater than or equal to the preset threshold, it means that the server restarts several times in a row and the power-on self-test is still abnormal. Serial log of the POST process. In this technical solution, when the power-on self-test is running normally, the log recording mode of the power-on self-test is not enabled, and the server can execute the power-on self-test process according to the conventional power-on self-test process, which does not take too long. Only when it is determined that the power-on self-test process of the server is abnormal, the log record mode of power-on self-test is enabled to record the serial port log of the power-on self-test process, so as to realize the fault detection of power-on self-test.

Considering that in practical applications, through the maintenance of the administrator, the abnormality of the server power-on self-check will not last forever. If the power-on self-test logging mode is always enabled, it will take a long time to perform the power-on self-test every time the server is powered on and started. Therefore, in this embodiment of the present invention, after the logging mode of the power-on self-test is enabled, the log-recording mode of the power-on self-test may be turned off when it is determined that the server power-on self-test has returned to a normal working state.

There can be various triggering conditions to turn off the logging mode of POST.

In combination with the above-mentioned watchdog program, a feasible way is to determine whether the watchdog program is triggered within the second preset time period.

When the server does not complete the power-on self-test within the preset startup time, the watchdog program is triggered when the server restarts.

In practical applications, in addition to the server restarting when the power-on self-check is abnormal, the server will also perform a normal power-on restart due to business requirements.

After the server turns on the log recording mode of power-on self-test, the time is started when the server is powered on and restarted, or when the server triggers the watchdog program for the first time, and the watchdog program starts within the second preset time period. If it is not triggered, it means that the server does not have any abnormality in the power-on self-test within the second preset time period, and the log recording mode of the power-on self-test can be turned off at this time.

The value of the second preset time period is greater than the value of the preset time period in S102, for example, the second preset time period may be set to 60 minutes.

After the server turns on the logging mode of the power-on self-test, take the time when the server triggers the watchdog program for the first time as an example. If the server does not trigger the watchdog program again within 60 minutes, it means that the power-on self-test of the server starts. The process has returned to normal, and the logging mode of POST can be turned off at this time.

The second possible trigger condition is to determine whether the time interval between the current restart time and the last server restart time is greater than or equal to the preset time when the server restarts and completes the power-on self-test after the logging mode of the power-on self-test is turned on. time limit.

After the server enables the power-on self-test logging mode, if the server still fails the power-on self-test, the server will restart multiple times within a short period of time. Therefore, if the time interval between the current restart time and the last server restart time is greater than or equal to the preset time limit, it means that the server restart is a normal business requirement, not a server restart caused by an abnormal power-on self-check. The self-test process has returned to normal, and the logging mode of the power-on self-test can be turned off at this time.

The third possible trigger condition is that after the logging mode of the power-on self-test is turned on, when the server has no abnormality in the power-on self-test for two consecutive times, the log-recording mode of the power-on self-test is turned off.

It should be noted that, in this embodiment of the present invention, two consecutive power-on self-checks of the server without abnormality do not mean that the server performs two power-on self-check operations in a short period of time. Twice refers to two power-on self-tests that are adjacent in time.

If there is no abnormality in two consecutive power-on self-tests, it means that the server power-on self-test process has returned to normal. At this time, you can disable the power-on self-test logging mode.

For the shutdown of the logging mode of the power-on self-test, in the specific implementation, the preset flag bit of the power-on self-test logging program can be adjusted to an invalid flag bit, so as to facilitate the logging mode of the server during the power-on self-test is closed.

After the power-on self-test logging mode is enabled, by detecting the working status of the server power-on self-test, when the server power-on self-test returns to normal, the power-on self-test logging mode can be turned off in time, reducing the power consumption. The impact of the logging mode being enabled for a long time on the power-on self-test time.

2 is a schematic structural diagram of a device for starting a serial port log provided by an embodiment of the present invention, including a recording unit 21, a judging unit 22, and an opening unit 23;

The recording unit 21 is configured to restart the server when the server does not complete the power-on self-check within the preset startup time, and record the number of restarts;

The judgment unit 22 is used for judging whether the number of restarts of the server within the preset time period is greater than or equal to the preset threshold; if so, triggering the opening unit 23;

The enabling unit 23 is used to enable the logging mode of the power-on self-test.

Optionally, the recording unit is specifically used to determine whether the server completes the power-on self-test within the preset startup time when the server is started; if not, restart the server, and trigger the preset watchdog program, using the watchdog The program detects whether the server completes the power-on self-test within the preset startup time;

Correspondingly, the judging unit is specifically configured to judge whether the number of times the watchdog program is triggered within the preset time period is greater than or equal to the preset threshold.

Optionally, it also includes a second judgment unit and a closing unit;

The second judgment unit is used to judge whether the watchdog program is triggered within the second preset time period after the log recording mode of the power-on self-check is turned on; if not, trigger the shutdown unit;

Shut down the unit, which is used to turn off the logging mode for POST.

Optionally, also includes a third judging unit and a closing unit;

The third judging unit is configured to judge whether the time interval between the current restart time and the last server restart time is greater than or equal to the preset time when the server restarts and completes the power-on self-check after the logging mode of the power-on self-check is turned on. time limit; if so, trigger the shutdown unit;

Shut down the unit, which is used to turn off the logging mode for POST.

Optionally, it also includes a closing unit;

The shutdown unit is used to disable the log recording mode of the power-on self-test when the server has no abnormality in two consecutive power-on self-tests after the log-recording mode of the power-on self-test is turned on.

Optionally, the opening unit is specifically configured to adjust the pre-set flag bit of the power-on self-check logging program to a valid flag bit, so that the server can open the log record during the power-on self-check;

The shutdown unit is specifically used to adjust the preset flag bit of the power-on self-test logging program to an invalid flag bit, so that the log record mode of the server is turned off during the power-on self-test.

For the description of the features in the embodiment corresponding to FIG. 2 , reference may be made to the relevant description of the embodiment corresponding to FIG. 1 , which will not be repeated here.

It can be seen from the above technical solutions that when the server does not complete the power-on self-test within the preset startup time, it means that the current power-on self-test process is abnormal, and the server can be restarted at this time, and the number of restarts can be recorded. Each time the server is restarted, the number of restarts is incremented by 1, and it is determined whether the number of restarts of the server within the preset time period is greater than or equal to the preset threshold. When the number of restarts of the server within the preset time period is greater than or equal to the preset threshold, it means that the server restarts several times in a row and the power-on self-test is still abnormal. Serial log of the POST process. In this technical solution, when the power-on self-test is running normally, the log recording mode of the power-on self-test is not enabled, and the server can execute the power-on self-test process according to the conventional power-on self-test process, which does not take too long. Only when it is determined that the power-on self-test process of the server is abnormal, the log record mode of power-on self-test is enabled to record the serial port log of the power-on self-test process, so as to realize the fault detection of power-on self-test.

3 is a schematic diagram of the hardware structure of a serial port log startup device 30 according to an embodiment of the present invention, including:

memory 31 for storing computer programs;

The processor 32 is configured to execute the computer program to implement the steps of the method for starting a serial port log as described in any of the foregoing embodiments.

Embodiments of the present invention further provide a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the serial port log described in any of the foregoing embodiments can be implemented. Steps to start the method.

The method, the device, and the computer-readable storage medium for starting a serial port log provided by the embodiments of the present invention have been described in detail above. The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the various embodiments can be referred to each other. As for the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant part can be referred to the description of the method. It should be pointed out that for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can also be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Professionals may further realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two, in order to clearly illustrate the possibilities of hardware and software. Interchangeability, the above description has generally described the components and steps of each example in terms of functionality. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of the present invention.

The steps of a method or algorithm described in conjunction with the embodiments disclosed herein may be directly implemented in hardware, a software module executed by a processor, or a combination of the two. A software module can be placed in random access memory (RAM), internal memory, read only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other in the technical field. in any other known form of storage medium.

Claims (10)

1. A method for starting a serial port log is characterized by comprising the following steps:

when the server does not finish power-on self-test within the preset starting time, restarting the server and recording the restarting times;

judging whether the restarting times of the server in a preset time period are greater than or equal to a preset threshold value or not;

if yes, starting a log recording mode of power-on self-test.

2. The method of claim 1, wherein restarting the server when the server does not complete the power-on self-test within a preset startup time, and recording the number of times of restarting comprises:

when a server is started, judging whether the server completes power-on self-test within preset starting time;

if not, restarting the server, triggering a preset watchdog program, and detecting whether the server completes power-on self-test within preset starting time by using the watchdog program;

correspondingly, judging whether the restart times of the server in a preset time period are greater than or equal to a preset threshold value comprises:

and judging whether the number of times of triggering the watchdog program in a preset time period is greater than or equal to a preset threshold value.

3. The method of claim 2, further comprising, after the initiating the logging mode of the power-on self test:

judging whether the watchdog program is triggered within a second preset time period;

if not, closing the log recording mode of the power-on self-test.

4. The method of claim 1, further comprising, after the initiating the logging mode of the power-on self test:

when the server is restarted and the power-on self-test is completed, judging whether the time interval between the current restarting time and the last server restarting time is greater than or equal to a preset time limit value;

if yes, closing the log recording mode of the power-on self-test.

5. The method of claim 1, further comprising, after the initiating the logging mode of the power-on self test:

and when the server is not abnormal after two consecutive power-on self-tests, closing the log recording mode of the power-on self-tests.

6. The method according to any one of claims 3-5, wherein the initiating the logging mode of the power-on self test comprises:

adjusting a flag bit of a preset power-on self-inspection log recording program to be an effective flag bit so as to start log recording when a server is powered on for self-inspection;

correspondingly, the closing the logging mode of the power-on self-test comprises:

and adjusting the flag bit of the preset power-on self-test log recording program into an invalid flag bit so that the log recording mode is in a closed state when the server is powered on for self-test.

7. A starting device of a serial port log is characterized by comprising a recording unit, a judging unit and an opening unit;

the recording unit is used for restarting the server and recording the restarting times when the server does not finish the power-on self-test within the preset starting time;

the judging unit is used for judging whether the restarting times of the server in a preset time period are greater than or equal to a preset threshold value; if yes, triggering the starting unit;

the starting unit is used for starting a log recording mode of the power-on self-test.

8. The device according to claim 7, wherein the recording unit is specifically configured to, when a server is started, determine whether the server completes a power-on self-test within a preset starting time; if not, restarting the server, triggering a preset watchdog program, and detecting whether the server completes power-on self-test within preset starting time by using the watchdog program;

correspondingly, the judging unit is specifically configured to judge whether the number of times that the watchdog program is triggered within a preset time period is greater than or equal to a preset threshold.

9. The utility model provides a starting drive of serial ports log which characterized in that includes:

a memory for storing a computer program;

processor for executing said computer program for carrying out the steps of the method for starting a serial log according to any of claims 1 to 6.

10. A computer-readable storage medium, having stored thereon a computer program which, when being executed by a processor, carries out the steps of the method for starting a serial port log according to any one of claims 1 to 6.

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