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..02-Jul-20154 KiB

.gitignore02-Jul-201566

accumulate.py02-Jul-20159.3 KiB

dmprof02-Jul-2015337

dmprof.py02-Jul-20152.4 KiB

download.sh02-Jul-2015298

graph.py02-Jul-20152.9 KiB

lib/02-Jul-20154 KiB

OWNERS02-Jul-201523

policies.json02-Jul-2015714

policy.android.browser.json02-Jul-20158.1 KiB

policy.android.renderer.json02-Jul-201515.7 KiB

policy.android.webview.json02-Jul-201515.6 KiB

policy.l0.json02-Jul-20153.4 KiB

policy.l1.json02-Jul-20154.4 KiB

policy.l2.json02-Jul-201513.9 KiB

policy.linux.browser.json02-Jul-201510.2 KiB

policy.sourcefile.json02-Jul-20154 KiB

policy.t0.json02-Jul-20154.4 KiB

PRESUBMIT.py02-Jul-20151.4 KiB

README.policy02-Jul-20152.6 KiB

sorter.malloc-component.json02-Jul-20157.6 KiB

sorter.malloc-type.json02-Jul-2015744

sorter.vm-map.json02-Jul-20152.6 KiB

sorter.vm-sharing.json02-Jul-2015363

sorters/02-Jul-20154 KiB

subcommands/02-Jul-20154 KiB

templates.json02-Jul-20151.5 KiB

tests/02-Jul-20154 KiB

visualizer/02-Jul-20154 KiB

README.policy

1Policy files contains a classification policy for dmprof.py.
2
3Each line indicates a group to be classified and conditions for classifying
4in the following format.
5  Format: <group-name> <region-type> <pattern>
6
7<group-name> is a name for the group to be classified.  Same names can appear
8in the same policy file multiple times.  <region-type> represents a type of
9the memory region.  It's one of {malloc, mmap, default, optional}.  <pattern>
10is a Python-style regular expression to match with calling stack frames.
11
12For each memory chunks allocated by malloc, its calling stack frame of malloc
13is compared with these classification policies whose <region-type> is 'malloc'
14from the top.  If <pattern> of the policy matches the frame, the memory chunk
15is classified into <group-name>.  The same way for 'mmap'.
16
17Policy lines whose <region-type>s are 'optional' and 'default' are used by
18dmprof.py internally.  'optional' policies can be disabled by removing or
19commenting-out.
20
21
22Guidelines to write a new policy.
23
24Better policies would classify memory on a single layer, or simple combination
25of layers.  For example,
26- Large-level components (V8, WebKit, ...)
27- Mid-level components (Font, FileAPI, ...)
28- Low-level libraries (StringImpl, HashTable, ...)
29- Mid-level libraries (SharedBuf, XHR, ...)
30
31For example of combinations,
32- How about SharedBuf in Font API v.s. other APIs?
33- How about Strings in IndexedDB v.s. File APIs?
34
35
36Deprecated policies for references.
37
38total-vm                       optional        optional
39anonymous-vm                   optional        optional
40filemapped-vm                  optional        optional
41other-vm                       optional        optional
42vm-profiler                    optional        optional
43vm-total                       optional        optional
44mmap-v8-heap-new               mmap    .*v8::.*::ReserveInitialChunk.*
45mmap-v8-heap-coderange         mmap    .*v8::.*::CodeRange::Setup.*
46mmap-v8-heap-old-evacuate      mmap    .*v8::.*::OldSpace::.* v8::internal::ScavengingVisitor::EvacuateObject.*
47mmap-v8-heap-old               mmap    .*v8::.*::OldSpace::.*
48mmap-v8-heap-largeobj          mmap    .*v8::.*::LargeObjectChunk::New.*
49mmap-v8-heap-other             mmap    .*VirtualMemory.*
50mmap-v8-heap-other             mmap    .*v8::internal::OS::Allocate.*
51mmap-v8-nonheap                        mmap    .*v8::.*
52mmap-webkit                    mmap    .*(WTF::|WebCore::|blink::|WebKit::).*
53mmap-sqlite                    mmap    .*sqlite3MemMalloc.*
54mmap-pl-arena                  mmap    .*PL_ArenaAllocate.*
55mmap-sk                        mmap    .*sk_malloc_flags.*
56mmap-total-record-vm           default default
57