Managing diagnostic information

• US 9,971,872 B2
• Filed: 09/25/2015
• Issued: 05/15/2018
• Est. Priority Date: 05/22/2013
• Status: Active Grant

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Malinowski, Joseph V., Perez, Miguel A., Reed, David C., Smith, Max D.
• Primary Examiner(s): Lottich, Joshua P
• Application Number:
  US14/865,002
• Publication Number:
  US 20160012200A1
• Time in Patent Office: 963 Days
• CPC Class Codes: G06F 11/0727 in a storage system, e.g. in a DASD or network based storage system drivers for digital recording or reproducing units G06F3/06; circuits for error detection or correction within digital recording or reproducing units G11B20/18; for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS], H04L67/1097
• CPC Class Codes: G06F 11/0778 Dumping, i.e. gathering error/state information after a fault for later diagnosis
• CPC Class Codes: G06F 11/3409 for performance assessment
• CPC Class Codes: G06F 11/3466 Performance evaluation by tracing or monitoring
• CPC Class Codes: G06F 11/3636 by tracing the execution of the program
• CPC Class Codes: G06F 2201/86 Event-based monitoring
• CPC Class Codes: G16H 40/67 for remote operation

Abstract

A computer program product for managing diagnostic information is disclosed. The computer program product may include creating a data space in volatile memory. The data space may be configured to collect a selected diagnostic information. The selected diagnostic information may include a first diagnostic information from a first source and a second diagnostic information from a second source. The computer program product may include collecting in the data space the selected diagnostic information. The computer program product may include releasing from the data space at least a portion of the selected diagnostic information in response to a triggering event.

Claims

1. A non-transitory computer program product for managing diagnostic information, the computer program product comprising a computer readable storage medium having program instructions embodied therewith, wherein the computer readable storage medium is not a transitory signal per se, the program instructions to cause:

allocating a data space in a volatile memory to store a selected diagnostic information, the selected diagnostic information including a first diagnostic information from a first source and a second diagnostic information from a second source, the selected diagnostic information being a subset of information recorded by a generalized trace facility recording events of the first and second sources;

collecting in the data space the selected diagnostic information, the collecting including;

an intermixing of the first diagnostic information and the second diagnostic information during a time window preceding an error event, and

a wrapping in the data space of at least a portion of the selected diagnostic information when a collection threshold amount of the data space is reached; and

dumping from the data space to a non-volatile memory at least a portion of the selected diagnostic information in response to the error event.

2. The computer program product of claim 1, wherein the first source is an application program and the second source is an input/output component.

3. The computer program product of claim 1, wherein the selected diagnostic information includes a third source and a fourth source, and the first source is a first server, the second source is a second server, the third source is a host adapter, and the fourth source is a device adapter.

4. The computer program product of claim 1, wherein the error event includes an improper lock of a resource.

5. The computer program product of claim 1, wherein the error event includes an attempt to access a resource exceeding a latency threshold.

6. The computer program product of claim 1, wherein the selected diagnostic information includes a first interrupt by the first source and a second interrupt by the second source.

7. The computer program product of claim 1, wherein the selected diagnostic information includes a first application history of the first source and a second application history of the second source.

8. The computer program product of claim 1, wherein the selected diagnostic information includes a first channel command by the first source and a second channel command by the second source.

9. The computer program product of claim 1, wherein the selected diagnostic information includes a first supervisor call (SVC) by the first source and a second SVC by the second source.