Legend

0
uninitialized
X
no feedback
1
monomorphic
^
recompute handler
P
polymorphic
N
megamorphic
G
generic

Settings

Theme:

Instructions

Unified web interface to analyse runtime information stored in the v8 log.

For generating a v8.log file from d8: For generating a v8.log file from Chrome:

LOG_FLAGS:

--log-all
Enable all V8 logging options.
--trace-maps
LogMaps
--trace-ic
Log ICs
--log-source-code
Log source code
--log-code-disassemble
Log detailed generated generated code
--log-api
Log various API uses.

Keyboard Shortcuts for Navigation

SHIFT + Arrow Up
Follow Map transition forward (first child)
SHIFT + Arrow Down
Follow Map transition backwards
Arrow Up
Go to previous Map chunk
Arrow Down
Go to next Map in chunk
Arrow Left
Go to previous chunk
Arrow Right
Go to next chunk
+
Timeline zoom in
-
Timeline zoom out