Providing service address space for diagnostics collection

Patent metadata

Field	Value
Publication number	US-9448911-B2
Application number	US-201313961491-A
Country	US
Kind code	B2
Filing date	Aug 7, 2013
Priority date	Aug 10, 2012
Publication date	Sep 20, 2016
Grant date	Sep 20, 2016

Abstract

A method and system are provided for providing a service address space for diagnostics collection. The system includes: a service co-processor attached to a main processor, wherein the service co-processor maintains an independent copy of the main processor's address space in the form of a service address space; and a storage update receiving component for updating the service address space by receiving storage update packets from the main processor and applying these to the service address space. An instruction pipe may be provided between the main processor and the service co-processor. The main processor may include: a service delegation component for delegating collection of diagnostic data to the co-processor by sending a collection command from the main processor to the service co-processor for collection of data from the service address space.

First claim

What is claimed is:

1. A system for providing service address space for diagnostics collection, comprising:
a service co-processor provided with a service address space, the service co-processor attached to a main processor wherein the main processor is provided with a main address space, the service address space and the main address space being a full range of memory available to the respective service co-processor and the main processor, wherein the service co-processor creates and maintains an independent copy of the main address space in the form of the service address space, the service co-processor including an initializing component for initializing the service address space by copying data from the main address space; and
wherein the service co-processor has a storage update receiving component for updating the service address space by receiving storage delta packets from the main processor and applying these to the service address space.

2. The system as claimed in claim 1 , wherein the service co-processor is attached to the main processor via an instruction pipe and a command pipe.

3. The system as claimed in claim 2 , wherein the main processor includes a service delegation component for delegating collection of diagnostic data to the co-processor by sending a collection command via the command pipe from the main processor to the service co-processor for collection of data from the service address space.

4. The system as claimed in claim 1 , wherein the main processor has an instruction intercepting component for intercepting instructions that modify the main address space.

5. The system as claimed in claim 1 , wherein the main processor has a storage delta packet generator component for generating the storage delta packets.

Assignees

• IBM

Inventors

• Harman David J
• Leedham Neil W
• Walsh Kim P
• Wright Andrew

Classifications

• G06F11/0724 Primary

  in a multiprocessor or a multi-core unit (multiprocessors per se G06F15/80) · CPC title

• G06F11/3476 Primary

  Data logging (G06F11/14, G06F11/2205 take precedence) · CPC title

• G06F11/34

  Recording or statistical evaluation of computer activity, e.g. of down time, of input/output operation {; Recording or statistical evaluation of user activity, e.g. usability assessment} · CPC title

• G06F11/0778

  Dumping, i.e. gathering error/state information after a fault for later diagnosis · CPC title

• G06F11/3648 Primary

  using additional hardware · CPC title