docs/memory-infra/heap_profiler.md - Issue 2494063002: Move memory docs to docs/memory-infra

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Issue 2494063002: Move memory docs to docs/memory-infra (Closed)

Patch Set: rebase Created 4 years, 1 month ago

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1 # Heap Profiling with MemoryInfra	1 # Heap Profiling with MemoryInfra

2	2

3 As of Chrome 48, MemoryInfra supports heap profiling. The core principle is	3 As of Chrome 48, MemoryInfra supports heap profiling. The core principle is

4 a solution that JustWorks™ on all platforms without patching or rebuilding,	4 a solution that JustWorks™ on all platforms without patching or rebuilding,

5 intergrated with the chrome://tracing ecosystem.	5 intergrated with the chrome://tracing ecosystem.

6	6

7 [TOC]	7 [TOC]

8	8

9 ## How to Use	9 ## How to Use

10	10

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22	22

23 4. In the analysis view, cells marked with a triple bar icon (☰) contain heap	23 4. In the analysis view, cells marked with a triple bar icon (☰) contain heap

24 dumps. Select such a cell.	24 dumps. Select such a cell.

25	25

26 ![Cells containing a heap dump][cells-heap-dump]	26 ![Cells containing a heap dump][cells-heap-dump]

27	27

28 5. Scroll down all the way to _Heap Details_.	28 5. Scroll down all the way to _Heap Details_.

29	29

30 6. Pinpoint the memory bug and live happily ever after.	30 6. Pinpoint the memory bug and live happily ever after.

31	31

32 [memory-infra]: memory_infra.md	32 [memory-infra]: README.md

33 [m-purple]: https://storage.googleapis.com/chromium-docs.appspot.com/d7bd f4d16204c293688be2e5a0bcb2bf463dbbc3	33 [m-purple]: https://storage.googleapis.com/chromium-docs.appspot.com/d7bd f4d16204c293688be2e5a0bcb2bf463dbbc3

34 [cells-heap-dump]: https://storage.googleapis.com/chromium-docs.appspot.com/a24d 80d6a08da088e2e9c8b2b64daa215be4dacb	34 [cells-heap-dump]: https://storage.googleapis.com/chromium-docs.appspot.com/a24d 80d6a08da088e2e9c8b2b64daa215be4dacb

35	35

36 ### Native stack traces	36 ### Native stack traces

37	37

38 By default heap profiling collects pseudo allocation traces, which are based	38 By default heap profiling collects pseudo allocation traces, which are based

39 on trace events. I.e. frames in allocation traces correspond to trace events	39 on trace events. I.e. frames in allocation traces correspond to trace events

40 that were active at the time of allocations, and are not real function names.	40 that were active at the time of allocations, and are not real function names.

41 However, you can build a special Linux / Android build that will collect	41 However, you can build a special Linux / Android build that will collect

42 real C/C++ stack traces.	42 real C/C++ stack traces.

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159 memory allocated by PartitionAlloc alone, the total renderer memory increase was	159 memory allocated by PartitionAlloc alone, the total renderer memory increase was

160 around 72 MiB.)	160 around 72 MiB.)

161	161

162 ![Diff of The Verge before and after loading ads][diff]	162 ![Diff of The Verge before and after loading ads][diff]

163	163

164 [pseudo-stack]: https://storage.googleapis.com/chromium-docs.appspot. com/058e50350836f55724e100d4dbbddf4b9803f550	164 [pseudo-stack]: https://storage.googleapis.com/chromium-docs.appspot. com/058e50350836f55724e100d4dbbddf4b9803f550

165 [break-down-by-backtrace]: https://storage.googleapis.com/chromium-docs.appspot. com/ec61c5f15705f5bcf3ca83a155ed647a0538bbe1	165 [break-down-by-backtrace]: https://storage.googleapis.com/chromium-docs.appspot. com/ec61c5f15705f5bcf3ca83a155ed647a0538bbe1

166 [break-down-by-type]: https://storage.googleapis.com/chromium-docs.appspot. com/2236e61021922c0813908c6745136953fa20a37b	166 [break-down-by-type]: https://storage.googleapis.com/chromium-docs.appspot. com/2236e61021922c0813908c6745136953fa20a37b

167 [type-then-backtrace]: https://storage.googleapis.com/chromium-docs.appspot. com/c5367dde11476bdbf2d5a1c51674148915573d11	167 [type-then-backtrace]: https://storage.googleapis.com/chromium-docs.appspot. com/c5367dde11476bdbf2d5a1c51674148915573d11

168 [diff]: https://storage.googleapis.com/chromium-docs.appspot. com/802141906869cd533bb613da5f91bd0b071ceb24	168 [diff]: https://storage.googleapis.com/chromium-docs.appspot. com/802141906869cd533bb613da5f91bd0b071ceb24

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