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

For generating a v8.log file from d8:

• /path/do/d8 $LOG_FLAGS $FILE

For generating a v8.log file from Chrome:

• /path/to/chrome --user-data-dir=/var/tmp/chr$RANDOM --no-sandbox --js-flags='$LOG_FLAGS’ $WEBSITE_URL

LOG_FLAGS:

--log-all

Enable all V8 logging options.

--log-maps

Log Maps

--log-ic

Log ICs

--log-source-code

Log source code

--log-code-disassemble

Log detailed generated generated code

--log-code

Log details about deoptimized code

--log-deopt

Log various API uses.

--prof

Log ticks from the sampling profiler.

Local Symbol Server

To get detailed C++ symbols for local binaries you can host the system-analyzer locally using tools/system-analyzer/local-server.sh. You can then access the analyzer on localhost.

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