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- #!/bin/bash
- # Copyright 2022 The Chromium Authors. All rights reserved.
- # Use of this source code is governed by a BSD-style license that can be
- # found in the LICENSE file.
- PERF_DATA_DIR="."
- PERF_DATA_PREFIX="chrome_renderer"
- RENDERER_ID="0"
- PERF_RECORD_FREQ="max"
- for i in "$@"; do
- case $i in
- --help)
- cat <<EOM
- Usage: path/to/chrome --renderer-cmd-prefix='${0} [OPTION]' [CHROME OPTIONS]
- This script is used to run linux-perf for each renderer process.
- It generates perf.data files that can be read by pprof or linux-perf.
- Output: \$OUT_DIR/\$PREFIX_\$PPID_\$RENDERER_ID.perf.data
- Options:
- --perf-data-dir=OUT_DIR Change the location where perf.data is written.
- Default: '${PERF_DATA_DIR}'
- --perf-data-prefix=PREFIX Set a custom prefix for all generated perf.data
- files.
- Default: '${PERF_DATA_PREFIX}'
- --perf-freq=FREQ Sets the sampling frequency:
- 'perf record --freq=FREQ'
- Default: '${PERF_RECORD_FREQ}'
- EOM
- exit
- ;;
- --perf-data-dir=*)
- PERF_DATA_DIR="${i#*=}"
- shift
- ;;
- --perf-data-prefix=*)
- PERF_DATA_PREFIX="${i#*=}"
- shift
- ;;
- --perf-freq=*)
- PERF_RECORD_FREQ="${i#*=}"
- shift
- ;;
- --renderer-client-id=*)
- # Don't shift this option since it is passed in (and used by) chrome.
- RENDERER_ID="${i#*=}"
- ;;
- *)
- ;;
- esac
- done
- PERF_OUTPUT="$PERF_DATA_DIR/${PERF_DATA_PREFIX}_${PPID}_${RENDERER_ID}.perf.data"
- perf record \
- --call-graph=fp --clockid=mono --freq="${PERF_RECORD_FREQ}" \
- --output="${PERF_OUTPUT}" \
- -- $@
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