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  17. 23 May, 2018 1 commit
    • Peter Marshall's avatar
      [cpu-profiler] Add a new profiling mode with a more detailed call tree. · ecae80cd
      Peter Marshall authored 
      The current profiling mode (called kLeafNodeLineNumbers in this CL)
produces a tree, with each node representing a stack frame that is seen
in one or more samples taken during profiling. These nodes refer to a
particular function in a stack trace, but not to a particular line or
callsite within that function.

This CL adds a new more (called kCallerLineNumbers) which produces a
different profile tree, where each stack trace seen during profiling,
including the line number, has a unique path in the tree.

The profile tree was previously keyed on CodeEntry*. Now it is keyed on
the pair of CodeEntry* and line_number, meaning it has distinct nodes
for those combinations which exist, and each distinct stack trace that
was sampled is represented in the tree.

For optimized code where we have inline frames, there are no line
numbers for the inline frames in the stack trace, causing duplicate
branches in the tree with kNoLineNumberInfo as the reported line number.
This will be addressed in follow-ups.

Bug: v8:7018
Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng
Change-Id: I512e221508f5b50ec028306d212263b514a9fb24
Reviewed-on: https://chromium-review.googlesource.com/1013493
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: 's avatarYang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53298}
      ecae80cd
  19. 11 Apr, 2018 1 commit
  21. 20 Mar, 2018 2 commits
  23. 09 Mar, 2018 1 commit
  25. 07 Mar, 2018 1 commit
  27. 22 Feb, 2018 1 commit
  29. 20 Feb, 2018 1 commit
    • Ulan Degenbaev's avatar
      [heap-profiler] Merge embedder nodes and V8 wrapper nodes. · 252e8a1c
      Ulan Degenbaev authored 
      Each DOM node has the corresponding V8 wrapper object. This leads to
apparent duplication in the heap snapshot and may confuse the users.

This patch allows the embedder to specify V8 wrapper for each embedder
node. In the heap snapshot the wrapper node will be merged into the
embedder node. The resulting node will have the same properties as
the embedder node. If the wrapper node name has a tag, then the tag
is also added to the merged node.

Bug: chromium:811925

Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
Change-Id: I2492f5b28163a78aee707b9ced1b09ac4b203e3f
Reviewed-on: https://chromium-review.googlesource.com/919482
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: 's avatarAlexei Filippov <alph@chromium.org>
Cr-Commit-Position: refs/heads/master@{#51394}
      252e8a1c
  31. 01 Feb, 2018 1 commit
  33. 21 Nov, 2017 1 commit
  35. 08 Nov, 2017 1 commit
  37. 02 Aug, 2017 1 commit
  39. 28 Jul, 2017 1 commit
  41. 02 Mar, 2017 1 commit
  43. 14 Feb, 2017 1 commit
  45. 13 Feb, 2017 4 commits
  47. 19 Jan, 2017 1 commit
  49. 06 Oct, 2016 1 commit
    • alph's avatar
      [profiler] Tracing-based CPU profiler. · 4b575dfc
      alph authored 
      A new V8 API object v8::TracingCpuProfiler is introduced.
Client can create it on an isolate to enable JS CPU profiles collected
during tracing session.

Once the v8.cpu_profile2 tracing category is enabled the profiler emits
CpuProfile and CpuProfileChunk events with the profile data.

BUG=chromium:406277

Review-Url: https://codereview.chromium.org/2396733002
Cr-Commit-Position: refs/heads/master@{#40054}
      4b575dfc
  51. 29 Sep, 2016 1 commit
  53. 09 Sep, 2016 1 commit
  55. 10 Aug, 2016 1 commit
  57. 02 Aug, 2016 1 commit
  59. 08 Jul, 2016 1 commit
  61. 06 Jul, 2016 1 commit
    • lpy's avatar
      Expose TickSample and its APIs in v8-profiler.h · 3172f6a9
      lpy authored 
      We want to eventually move the profiling functionality out of V8 as library,
this patch exposes TickSample and its APIs in v8-profiler.h so that when
embedders use library, they can have more details.

Minor change: Rename tick-sample.[h|cc] to simulator-helper.[h|cc].

BUG=v8:4789
LOG=N

Review-Url: https://codereview.chromium.org/2105943002
Cr-Commit-Position: refs/heads/master@{#37564}
      3172f6a9
  63. 22 Jun, 2016 1 commit
  65. 04 May, 2016 1 commit
  67. 26 Jan, 2016 1 commit
  69. 22 Jan, 2016 1 commit
  71. 21 Jan, 2016 1 commit