Managed runtime cache analysis

Patent metadata

Field	Value
Publication number	US-2016170875-A1
Application number	US-201414567156-A
Country	US
Kind code	A1
Filing date	Dec 11, 2014
Priority date	Dec 11, 2014
Publication date	Jun 16, 2016
Grant date	—

Abstract

Analyzing a managed runtime cache is provided. A heap associated with a managed runtime environment, where the heap includes an N-generation cache or a plurality of objects associated with a program operating within a managed runtime environment is identified. A snapshot of the heap is produced, wherein the snapshot identifies a memory location for each object of the plurality of objects at which the object is stored. A generation of each of the plurality of objects based, at least in part, on the memory location of the object is determined. One or more suggestions based, at least in part, on the memory location of the plurality of objects is provided.

First claim

What is claimed is:

1 - 8 . (canceled)

9 . A computer program product for conducting managed runtime cache analysis, the computer program product comprising:
one or more computer readable storage media and program instructions stored on the one or more computer readable storage media, the program instructions comprising: program instructions to identify a heap associated with a managed runtime environment, wherein the heap includes an N-generational cache of a plurality of objects that are associated with a program operating within the managed runtime environment; program instructions to produce a snapshot of the heap, wherein the snapshot identifies a memory location for each object of the plurality of objects at which the object is stored; program instructions to determine a generation of each of the plurality of objects based, at least in part, on the memory location of the object; and program instructions to provide one or more suggestions based, at least in part, on the memory location of the plurality of objects.

10 . The computer program product of claim 9 , wherein the instructions to provide one or more suggestions comprise: program instructions to analyze a number of objects in each generation of the cache; and program instructions to generate one or more results based on the analysis.

11 . The computer program product of claim 9 , further comprising:
program instructions to determine a location of the N-generational cache within the heap.

12 . The computer program product of claim 9 , wherein the program is operating at a steady-state when producing the snapshot of the heap.

13 . The computer program product of claim 9 , wherein a determination of the generation of each of the plurality of objects is based, at least in part, on a garbage collection policy of a garbage collector.

14 . The computer program product of claim 13 , wherein the one or more suggestions includes suggestions to i) modify at least one of the cache, and ii) modify a cache implementation algorithm to increase performance of the program.

15 . A computer system for conducting managed runtime cache analysis, the computer system comprising:
one or more computer processors; one or more computer readable storage media; program instructions stored on the computer readable storage media for execution by at least one of the computer processors, the program instructions comprising: program instructions to identify a heap associated with a managed runtime environment, wherein the heap includes an N-generational cache of a plurality of objects that are associated with a program operating within the managed runtime environment; program instructions to produce a snapshot of the heap, wherein the snapshot identifies a memory location for each object of the plurality of objects at which the object is stored; program instructions to determine a generation of each of the plurality of objects based, at least in part, on the memory location of the object; and program instructions to provide one or more suggestions based, at least in part, on the memory location of the plurality of objects.

16 . The computer system of claim 15 , wherein the instructions to provide one or more suggestions comprise: program instructions to analyze a number of objects in each generation of the cache; and program instructions to generate one or more results based on the analysis.

17 . The computer system of claim 15 , further comprising:
program instructions to determine a location of the N-generational cache within the heap.

18 . The computer system of claim 15 , wherein the program is operating at a steady-state when producing the snapshot of the heap.

19 . The computer system of claim 15 , wherein a determination of the generation of each of the plurality of objects is based, at least in part, on a garbage collection policy of a garbage collector.

20 . The computer system of claim 19 , wherein the one or more suggestions includes suggestion to i) modify at least one of the cache, and ii) modify a cache implementation algorithm to increase performance of the program.

Assignees

• IBM

Inventors

• Chamberlain Richard N
• Hellyer Howard J
• Peters Matthew F
• Pilkington Adam J

Classifications

• G06F11/3037 Primary

  where the computing system component is a memory, e.g. virtual memory, cache (accessing, addressing or allocating within memory systems or architectures G06F12/00; checking stores for correct operation G11C29/00) · CPC title

• G06F2212/69

  Physics · mapped topic

• G06F12/128

  adapted to multidimensional cache systems, e.g. set-associative, multicache, multiset or multilevel · CPC title

• G06F2212/702

  Conservative garbage collection · CPC title

• G06F12/0276 Primary

  Generational garbage collection · CPC title