CN101458650A - Apparatus and method for detecting internal memory transfer abnormity in multi-core system - Google Patents
Apparatus and method for detecting internal memory transfer abnormity in multi-core system Download PDFInfo
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- CN101458650A CN101458650A CNA2007101794677A CN200710179467A CN101458650A CN 101458650 A CN101458650 A CN 101458650A CN A2007101794677 A CNA2007101794677 A CN A2007101794677A CN 200710179467 A CN200710179467 A CN 200710179467A CN 101458650 A CN101458650 A CN 101458650A
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Abstract
The present invention provides a method and apparatus for detecting memory transferring abnormity in a multi-core system, the method comprises: recording a transferring track condition of the memory in the multi-core system; detecting the abnormal condition of the memory in transferring according to the track condition. The apparatus mainly comprises a transferring track recording module for recording transferring track condition of the memory in the multi-core system; a memory transferring abnormity detecting module for detecting the abnormal condition of the memory in transferring according to the track condition recorded in the transferring track recording module. According to the invention, the problems that the process for detecting the memory transferring abnormity is complicated, the detecting efficiency is low and the existing method is not suitable for detecting the memory transferring abnormity condition of combined path can be solved.
Description
Technical field
The present invention relates to computer application field, relate in particular to the apparatus and method that detect internal memory transfer abnormity in a kind of multiple nucleus system.
Background technology
In current electronics, communication, IT industry, the measurability of operating system and maintainability are must be obligato, and are more and more paid attention to, wherein a kind of especially gordian technique of the memory abnormal location technology of operating system.In multiple nucleus system, should free communication between multinuclear, communicate with the outside again, memory abnormal situation more complicated, if can in the very first time, write down the reason and the transmission link of memory abnormal, can improve the efficient of unusual location, and then increase customer satisfaction degree.
Memory abnormal detection method in a kind of multiple nucleus system of the prior art is: adopt the method for segment lookup method (being that segmentation is got rid of) to detect internal memory transfer abnormity between multinuclear.Concrete processing procedure is: with certain CPU is the test end points, send the test pack that detects memory abnormal to other all CPU, carry memory information in this test pack, on each other CPU, observe the reception condition of this test pack then, if there is internal memory transfer abnormity in incorrect this test pack that receives of certain other CPU between the CPU of then definite this other CPU and above-mentioned transmission test pack; Otherwise, determine that the internal memory transmission is normal between the CPU of this other CPU and above-mentioned transmission test pack.
A kind ofly adopt above-mentioned segment lookup method detects internal memory transfer abnormity between multinuclear principle schematic as shown in Figure 1.Fig. 1 is an example with the multiple nucleus system of 32 CPU, when repeating in this multiple nucleus system not have apparent errors such as printing, has occurred slight internal memory in this multiple nucleus system and has revealed, but can not determine specifically which transmission link to exist internal memory to reveal at.
At first construct above-mentioned test pack at CPU0, this test pack is sent to CPU1～CPU31 respectively, on CPU1～CPU31, observe the above-mentioned test pack that whether has correctly received to come respectively from CPU0, if CPU1～CPU31 can both correctly receive this test pack, then determine CPU0 and CPU1, CPU0 and CPU2, the rest may be inferred, and the internal memory transmission is normal between CPU0 and the CPU31.Whether then, continue according to the method described above, it is normal to detect between CPU1 and other CPU internal memory transmission, and the rest may be inferred, finds till the unusual link of internal memory transmission always.
It is unusual that above-mentioned segment lookup method can find that internal memory between most of multinuclear transmits.
The shortcoming of the method that memory abnormal detects in the above-mentioned prior art is: the position fixing process complexity of the internal memory transfer abnormity in this method, and length consuming time, efficient is low.When the CPU in multiple nucleus system was a lot, this problem was especially outstanding.
This method can not detect the internal memory transfer abnormity situation of combinatorial path.Such as, in the internal memory transfer abnormity synoptic diagram of as shown in Figure 2 combinatorial path, CPU0 and CPU1 directly pass to CPU2 with internal memory respectively, no abnormal, CPU0 passes to CPU2 through CPU1 with internal memory, and is also no abnormal, but CPU1 passes to CPU2 through CPU0 with internal memory, has internal memory and loses.In this case, the method for above-mentioned prior art can't detect the unusual link that internal memory transmits.
Summary of the invention
The purpose of the embodiment of the invention provides the method and apparatus that detects internal memory transfer abnormity in a kind of multiple nucleus system, thereby the process complexity, the efficient that solve art methods detection internal memory transfer abnormity are low, can not be applicable to the problem of the internal memory transfer abnormity situation of combinatorial path.
The purpose of the embodiment of the invention is achieved through the following technical solutions:
Detect the method for internal memory transfer abnormity in a kind of multiple nucleus system, comprising:
The track situation of the transmission of internal memory in the record multiple nucleus system;
According to described track situation, detect the abnormal conditions in the transmission of described internal memory.
Detect the device of internal memory transfer abnormity in a kind of multiple nucleus system, comprising:
Transmit the track record module, be used for writing down the track situation of the transmission of multiple nucleus system internal memory;
The internal memory transfer abnormity detection module is used for the described track situation that writes down according to described transmission track record module, detects the abnormal conditions in the transmission of described internal memory.
The technical scheme that is provided by the invention described above embodiment as can be seen, the embodiment of the invention is by the track situation of the transmission of internal memory in the record multiple nucleus system, according to described track situation, detect the abnormal conditions in the transmission of described internal memory, thereby greatly reduce the location complexity of internal memory transfer abnormity between multinuclear, shorten unusual positioning time, helped improving the measurability and the maintainability of multiple nucleus system.
Description of drawings
Fig. 1 is a kind of principle schematic that adopts the segment lookup method to detect internal memory transfer abnormity between multinuclear in the prior art;
Fig. 2 is the internal memory transfer abnormity synoptic diagram of a kind of combinatorial path in the prior art;
The principle schematic of the method for the internal memory transfer abnormity that utilizes multi-core internal memory track following technology for detection multiple nucleus system that Fig. 3 provides for the embodiment of the invention one;
The processing flow chart of the method for the internal memory transfer abnormity that utilizes multi-core internal memory track following technology for detection multiple nucleus system that Fig. 4 provides for the embodiment of the invention one;
The structural representation of the device of internal memory transfer abnormity in the detection multiple nucleus system that Fig. 5 provides for the embodiment of the invention two.
Embodiment
In embodiments of the present invention, by getting mode ready (is every through a CPU, write down the numbering of this CPU) CPU of process and the CPU of the last process of internal memory transmission on the way among the CPU that exists transmission track between multinuclear, this transmission track to comprise in real-time follow-up and the record to apply for internal memory, internal memory transmittance process.When internal memory transfer abnormity occurring in the multiple nucleus system, the transmission track of each internal memory by checking record just can fast, clearly detect the unusual link that internal memory transmits.
Describe the embodiment of the invention in detail below in conjunction with accompanying drawing, the principle schematic of the method for the internal memory transfer abnormity that utilizes multi-core internal memory track following technology for detection multiple nucleus system that the embodiment of the invention one provides as shown in Figure 3, concrete processing procedure comprises the steps: as shown in Figure 4
The embodiment of the invention is at first carried out the piecemeal processing to the Dram district of multiple nucleus system, and for each memory block in the Dram district disposes an independently administrative unit, this administrative unit and memory block are corresponding one by one.
The application program of internal memory track territory and record internal memory track is set in above-mentioned administrative unit, this application program be used for writing down memory block transmittance process the number information of CPU of process, and the number information of the CPU of record is kept in the internal memory track territory.This application program can be embedded in internal memory and receive or send in the processing application program.The size in this internal memory track territory decide according to what of the CPU of needs process in the memory block transmittance process, needs the CPU of process many more, and internal memory track territory is also just big more.
Multiple nucleus system with 32 CPU is an example below, and the internal memory track domain structure of 32 CPU can be shown in following table 1.
Table 1:
| Bit | The bit field title | Describe |
| 63:32 | MemTrack | Internal memory track bitmap, the numbering of expression CPU0～CPU31, the numbering of each corresponding CPU is put 1 expression memory block through corresponding C PU on one therein, puts 0 expression memory block and does not pass through this CPU. |
| 31:24 | StartCpu | The numbering of initial CPU is promptly applied for the CPU of memory block. |
| 23:16 | LastCpu0 | Finish the numbering of CPU, i.e. the last CPU that arrives of memory block. |
| 15:8 | LastCpu1 | Memory block transmits in the track, the numbering of second-to-last CPU. |
| 7:0 | LastCpu2 | Memory block transmits in the track, the numbering of the 3rd CPU reciprocal. |
In above-mentioned table 1, the length in internal memory track territory is 64 bits, 32 CPU sequence numbers of multipotency record, essential record memory block transmit the numbering of the numbering of the initial CPU in the track, the numbering that finishes CPU, second-to-last CPU and the numbering of the 3rd CPU reciprocal.The structure and the above-mentioned table 1 in the internal memory track territory of the multiple nucleus system of 16 CPU or 64 CPU are similar, only need correspondingly dwindle, enlarge internal memory track bitmap
The embodiment of the invention is in order to locate the abnormal conditions that internal memory transmits fast, transmit every during through a CPU at internal memory, utilize the application program of above-mentioned record internal memory track, the position 1 of the numbering correspondence of this CPU in above-mentioned internal memory track bitmap, all the other internal memory transmission do not have the position 0 of numbering correspondence of the CPU of process.In embodiments of the present invention, at certain CPU before next CPU has transmitted memory block, just with the correspondence position 1 of numbering in internal memory track bitmap of next CPU.In actual applications, can also after receiving memory block, a CPU just this CPU be recorded in the internal memory track territory.
Do not support duplicate record in internal memory track bitmap, promptly when memory block repeated through a certain CPU, only record once.
Such as, the track of internal memory transmission be CPU0-CPU1-CPU2-CPU1-CPU0, in internal memory track bitmap, be recorded as 0x00000007 so.
Consider the phenomenon that may have the internal memory passback in the multiple nucleus system, the track of memory block may be an endless, its whole tracks all can not be noted, and simultaneously, from saving the angle of internal memory, also should not write down too many internal memory track.Therefore, the embodiment of the invention can only write down beginning link and the last several links in the internal memory track in internal memory track bitmap, do not write down intermediate link.Such as, the numbering of last 3 CPU that only write down the numbering of the initial CPU of internal memory process, arrive in order.
The application program of the above-mentioned record internal memory track of realizing by the C language as follows:
/ * internal memory track record structure */
typedef?struct
{
/ * internal memory track bitmap, each represents a CPU, CPU0～CPU31*/
unsigned?long?ulMemTrack；
Unsigned long bit8StartCpu:8; The initial CPU* of/*/
Unsigned long bit8LastCpu0:8; / * finishes CPU, i.e. the last arrival of memory block
CPU＊/
Unsigned long bit8LastCpu1:8; / * second-to-last CPU*/
Unsigned long bit8LastCpu2:8; / * the 3rd CPU* reciprocal/
}MEM_TRACK_STRU；
MEM_TRACK_STRU strMemTrackStru; Internal memory track in the/* memory management structure
Territory */
#ifdef__MEM_TRACK__
...
/ * initialization memory block, with internal memory track territory be changed to invalid */
strMemTrackStru.ulMemTrack＝0；
StrMemTrackStru.bit8StartCpu=0xFF; The invalid CPU * of/*/
StrMemTrackStru.bit8LastCpu0=0xFF; The invalid CPU * of/*/
StrMemTrackStru.bit8LastCpu1=0xFF; The invalid CPU * of/*/
StrMemTrackStru.bit8LastCpu2=0xFF; The invalid CPU * of/*/
...
/ * applies for memory block, obtain the application memory block CPU */
The CPU * of strMemTrackStru.bit8StartCpu=/* application memory block/;
StrMemTrackStru.ulMemTrack=1＜＜/the CPU * of * application memory block/;
The CPU * of strMemTrackStru.bit8LastCpu0=/* application memory block/;
StrMemTrackStru.bit8LastCpu1=0xFF; The invalid CPU * of/*/
StrMemTrackStru.bit8LastCpu2=0xFF; The invalid CPU * of/*/
...
/ * transmits memory block, obtain current C PU */
StrMemTrackStru.ulMemTrack|=1＜＜/* current C PU */;
strMemTrackStru.bit8LastCpu2＝strMemTrackStru.bit8LastCpu1；
strMemTrackStru.bit8LastCpu1＝strMemTrackStru.bit8LastCpu0；
StrMemTrackStru.bit8LastCpu0=/* current C PU */;
#endif/*#ifdef__MEM_TRACK one */
In realizing application, can be as required, lengthening internal memory track configuration, for example when the location combinatorial path was unusual, the CPU quantity of internal memory process was more, is having under the situation of sequence requirement, needed to enlarge the internal memory track configuration.Equally, in order to save expense, also can simplify the internal memory track configuration, a kind of internal memory track configuration of simplification only comprises 2 subdomains shown in following table 2: initial CPU, end CPU.
Table 2,
In the internal memory transmittance process of multiple nucleus system,, can cause the phenomenon that internal memory is revealed, memory block is lost owing to reasons such as CPU break down.Such as, in Fig. 2, CPUn-1 is in abnormality, all normal operations of other CPU, and for memory block 1, by the CPU0 application, by way of CPU2, CPUn, CPUn-2 is discharged by CPU1 at last, and whole process is not unusual, does not have internal memory to reveal yet; For memory block 2, by the CPU1 application, need be delivered to CPUn through CPUn-1, because CPUn-1 is in anomalous mode,, causes internal memory transmission track interruption or cause internal memory to reveal so memory block 2 is dropped on CPUn-1.
When occurring above-mentioned internal memory transmission track interruption in the multiple nucleus system or causing the situation of internal memory leakage; by the record in the internal memory track territory in the administrative unit of checking memory block; obtain memory block in transmittance process the information of all CPU of process; contrast source CPU and purpose CPU that this memory block transmits again; whether just can judge internal memory arrives at the destination as scheduled; perhaps lose halfway; just can be quick; discovery intuitively causes the unusual CPU in the internal memory transmission; unusual link; promptly internal memory transfer abnormity is positioned; this unusual CPU is generally one or two among two CPU of the last process that writes down in the internal memory track territory, and this unusual link is generally the link of last process that writes down in the internal memory track territory.
Still be that example illustrates with the memory block among above-mentioned Fig. 22, CPU is before transmitting memory block to next CPU, with the correspondence position 1 of numbering in internal memory track bitmap of next CPU, the source CPU of this memory block 2 is CPU1, purpose CPU is CPUn, the path of transmitting be CPU1, CPUn-1 to CPUn, still in CPUn, do not receive this memory block 2.So, check the record in the internal memory track territory of this memory block 2, write down the number information of CPU1, CPUn-1 and CPUn in this record, last CPU that sends this memory block 2 is CPUn-1, so, just can determine that fault (send failure such as CPUn-1, perhaps CPUn takes defeat) has appearred among CPUn-1 and the CPUn one or two, perhaps CPUn-1 fault (CPUn-1 sends successfully, but CPUn does not receive memory block 2) occurred to the bang path between the CPUn.
After having determined unusual CPU, unusual link, can handle accordingly, such as hanging up relevant CPU to keep the scene intact.
The embodiment of the invention two provides a kind of device that detects internal memory transfer abnormity in the multiple nucleus system, and this device is corresponding with the method for internal memory transfer abnormity in the detection multiple nucleus system of embodiment one, and its structural representation comprises as shown in Figure 5 as lower module:
Transmit the track record module, be used in the transmittance process of multiple nucleus system internal memory, utilize the track situation of the transmission of internal memory in the application records multiple nucleus system of embedded record internal memory track, this track situation comprise internal memory transmit the number information of each CPU of process.
The internal memory transfer abnormity detection module, when being used in multiple nucleus system occurs, having the situation of losing in the transmittance process, track situation according to this internal memory transmission of writing down in the described transmission track record module, promptly this internal memory transmit the number information of each CPU of process, detect the abnormal conditions in the transmission of described internal memory.These abnormal conditions comprise unusual CPU and/or unusual link.
The internal memory transfer abnormity device also comprises in the described detection multiple nucleus system:
Internal memory track territory is provided with module, is used at multiple nucleus system, writes down the internal memory track territory of the track situation of internal memory transmission at one of each memory setting.The size in this internal memory track territory decide according to what of the CPU of needs process in the memory block transmittance process, needs the CPU of process many more, and internal memory track territory is also just big more.Comprise internal memory track bitmap in this internal memory track territory, the numbering of the corresponding CPU of each in this internal memory track bitmap is put 1 expression memory block through corresponding C PU on one therein, puts 0 expression memory block and does not pass through corresponding C PU.
Comprise in the described transmission track record module: the real time record processing module, be used in the transmittance process of multiple nucleus system internal memory, utilize the application program of record internal memory track, the real time record internal memory transmit the number information of each CPU of process, and the information of record is kept in the described internal memory track territory.Transmit at internal memory every during through a CPU, the position 1 of the numbering correspondence of this CPU in above-mentioned internal memory track bitmap, all the other internal memory transmission do not have the position 0 of numbering correspondence of the CPU of process.Do not support duplicate record in internal memory track bitmap, promptly when memory block repeated through a certain CPU, only record once.
Described internal memory transfer abnormity detection module comprises: the trajectory analysis module; be used for when the situation of internal memory transmission track interruption or internal memory leakage appears in multiple nucleus system; obtain memory block in transmittance process the information of all CPU of process; contrast source CPU and purpose CPU that this memory block transmits again; whether judge internal memory arrives at the destination as scheduled; perhaps lose halfway; discovery causes the unusual CPU in the internal memory transmission; unusual link; promptly internal memory transfer abnormity is positioned; this unusual CPU is generally one or two among two CPU of the last process that writes down in the internal memory track territory, and this unusual link is generally the link of last process that writes down in the internal memory track territory.
In sum, the embodiment of the invention has realized internal memory track real-time follow-up between multinuclear, greatly reduces the location complexity of internal memory transfer abnormity between multinuclear, has shortened unusual positioning time, internal memory transfer abnormity is located at the scene on the net be even more important.Help improving the measurability and the maintainability of multiple nucleus system.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (10)
1, detect the method for internal memory transfer abnormity in a kind of multiple nucleus system, it is characterized in that, comprising:
The track situation of the transmission of internal memory in the record multiple nucleus system;
According to described track situation, detect the abnormal conditions in the transmission of described internal memory.
2, detect the method for internal memory transfer abnormity in the multiple nucleus system according to claim 1, it is characterized in that the track situation of the transmission of internal memory in the described record multiple nucleus system comprises:
In multiple nucleus system in the transmittance process of internal memory, the real time record internal memory transmit the numbering of each CPU of process.
3, detect the method for internal memory transfer abnormity in the multiple nucleus system according to claim 2, it is characterized in that the track situation of the transmission of internal memory in the described record multiple nucleus system comprises:
In multiple nucleus system, write down the internal memory track territory of the track situation of internal memory transmission at one of each memory setting;
In multiple nucleus system in the transmittance process of internal memory, utilize the application program of record internal memory track, the real time record internal memory transmit the numbering of each CPU of process, and the information of record is kept in the described internal memory track territory.
4, detect the method for internal memory transfer abnormity in the multiple nucleus system according to claim 3, it is characterized in that, the application program of described record internal memory track is embedded in internal memory and receives or send in the processing application program.
5, detect the method for internal memory transfer abnormity in the multiple nucleus system according to claim 1, it is characterized in that, the track situation of the transmission of described internal memory comprises the numbering of the portion C PU of the numbering of the beginning CPU that internal memory transmits, the numbering that finishes CPU and middle process.
According to the method that detects internal memory transfer abnormity in claim 3 or the 4 described multiple nucleus systems, it is characterized in that 6, described according to described track situation, the abnormal conditions that detect in the transmission of described internal memory comprise:
When having the situation of losing in the transmittance process in occurring in the multiple nucleus system, the track situation of inquiring about the transmission of the described internal memory that writes down in the internal memory track territory of described internal memory is obtained unusual CPU and/or unusual link in the transmission of described internal memory.
7, detect the device of internal memory transfer abnormity in a kind of multiple nucleus system, it is characterized in that, comprising:
Transmit the track record module, be used for writing down the track situation of the transmission of multiple nucleus system internal memory;
The internal memory transfer abnormity detection module is used for the described track situation that writes down according to described transmission track record module, detects the abnormal conditions in the transmission of described internal memory.
8, detect the device of internal memory transfer abnormity in the multiple nucleus system according to claim 7, it is characterized in that described device also comprises:
Internal memory track territory is provided with module, is used at multiple nucleus system, writes down the internal memory track territory of the track situation of internal memory transmission at one of each memory setting.
9, detect the device of internal memory transfer abnormity in the multiple nucleus system according to claim 8, it is characterized in that described transmission track record module specifically comprises:
The real time record processing module is used in the transmittance process of multiple nucleus system internal memory, utilizes the application program of record internal memory track, the real time record internal memory transmit the numbering of each CPU of process, and the information of record is kept in the described internal memory track territory.
10, detect the device of internal memory transfer abnormity according to Claim 8 or in the 9 described multiple nucleus systems, it is characterized in that described internal memory transfer abnormity detection module specifically comprises:
The trajectory analysis module; when being used in multiple nucleus system occurs, having the situation of losing in the transmittance process; inquire about the track situation of the transmission of the described internal memory that writes down in the internal memory track territory of described internal memory, obtain unusual CPU and/or unusual link in the transmission of described internal memory.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103034960A (en) * | 2012-11-23 | 2013-04-10 | 山东电力集团公司 | Tracing method for distribution automation system data |
| CN110618905A (en) * | 2019-08-06 | 2019-12-27 | 晶晨半导体（深圳）有限公司 | Method for detecting abnormal DDR memory in DDR memory module |
| CN112183600A (en) * | 2020-09-22 | 2021-01-05 | 天津大学 | Target tracking method based on dynamic memory library template updating |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100458757C (en) * | 2005-07-28 | 2009-02-04 | 大唐移动通信设备有限公司 | Inter core communication method and apparatus for multi-core processor in embedded real-time operating system |
| CN100403739C (en) * | 2006-02-14 | 2008-07-16 | 华为技术有限公司 | News transfer method based on chained list process |
| CN100487660C (en) * | 2007-05-28 | 2009-05-13 | 中兴通讯股份有限公司 | Multithreading processor dynamic EMS memory management system and method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103034960A (en) * | 2012-11-23 | 2013-04-10 | 山东电力集团公司 | Tracing method for distribution automation system data |
| CN110618905A (en) * | 2019-08-06 | 2019-12-27 | 晶晨半导体（深圳）有限公司 | Method for detecting abnormal DDR memory in DDR memory module |
| CN110618905B (en) * | 2019-08-06 | 2023-05-09 | 晶晨半导体（深圳）有限公司 | Method for detecting abnormal DDR memory in DDR memory module |
| CN112183600A (en) * | 2020-09-22 | 2021-01-05 | 天津大学 | Target tracking method based on dynamic memory library template updating |
| CN112183600B (en) * | 2020-09-22 | 2021-04-27 | 天津大学 | Target tracking method based on dynamic memory library template updating |
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