1 /* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.browser; 18 19 import android.net.WebAddress; 20 import android.os.Debug; 21 import android.os.Process; 22 import android.os.SystemClock; 23 import android.util.Log; 24 25 /** 26 * Performance analysis 27 */ 28 public class Performance { 29 30 private static final String LOGTAG = "browser"; 31 32 private final static boolean LOGD_ENABLED = 33 com.android.browser.Browser.LOGD_ENABLED; 34 35 private static boolean mInTrace; 36 37 // Performance probe 38 private static final int[] SYSTEM_CPU_FORMAT = new int[] { 39 Process.PROC_SPACE_TERM | Process.PROC_COMBINE, 40 Process.PROC_SPACE_TERM | Process.PROC_OUT_LONG, // 1: user time 41 Process.PROC_SPACE_TERM | Process.PROC_OUT_LONG, // 2: nice time 42 Process.PROC_SPACE_TERM | Process.PROC_OUT_LONG, // 3: sys time 43 Process.PROC_SPACE_TERM | Process.PROC_OUT_LONG, // 4: idle time 44 Process.PROC_SPACE_TERM | Process.PROC_OUT_LONG, // 5: iowait time 45 Process.PROC_SPACE_TERM | Process.PROC_OUT_LONG, // 6: irq time 46 Process.PROC_SPACE_TERM | Process.PROC_OUT_LONG // 7: softirq time 47 }; 48 49 private static long mStart; 50 private static long mProcessStart; 51 private static long mUserStart; 52 private static long mSystemStart; 53 private static long mIdleStart; 54 private static long mIrqStart; 55 56 private static long mUiStart; 57 tracePageStart(String url)58 static void tracePageStart(String url) { 59 if (BrowserSettings.getInstance().isTracing()) { 60 String host; 61 try { 62 WebAddress uri = new WebAddress(url); 63 host = uri.getHost(); 64 } catch (android.net.ParseException ex) { 65 host = "browser"; 66 } 67 host = host.replace('.', '_'); 68 host += ".trace"; 69 mInTrace = true; 70 Debug.startMethodTracing(host, 20 * 1024 * 1024); 71 } 72 } 73 tracePageFinished()74 static void tracePageFinished() { 75 if (mInTrace) { 76 mInTrace = false; 77 Debug.stopMethodTracing(); 78 } 79 } 80 onPageStarted()81 static void onPageStarted() { 82 mStart = SystemClock.uptimeMillis(); 83 mProcessStart = Process.getElapsedCpuTime(); 84 long[] sysCpu = new long[7]; 85 if (Process.readProcFile("/proc/stat", SYSTEM_CPU_FORMAT, null, sysCpu, null)) { 86 mUserStart = sysCpu[0] + sysCpu[1]; 87 mSystemStart = sysCpu[2]; 88 mIdleStart = sysCpu[3]; 89 mIrqStart = sysCpu[4] + sysCpu[5] + sysCpu[6]; 90 } 91 mUiStart = SystemClock.currentThreadTimeMillis(); 92 } 93 onPageFinished(String url)94 static void onPageFinished(String url) { 95 long[] sysCpu = new long[7]; 96 if (Process.readProcFile("/proc/stat", SYSTEM_CPU_FORMAT, null, sysCpu, null)) { 97 String uiInfo = 98 "UI thread used " + (SystemClock.currentThreadTimeMillis() - mUiStart) + " ms"; 99 if (LOGD_ENABLED) { 100 Log.d(LOGTAG, uiInfo); 101 } 102 // The string that gets written to the log 103 String performanceString = 104 "It took total " + (SystemClock.uptimeMillis() - mStart) 105 + " ms clock time to load the page." + "\nbrowser process used " 106 + (Process.getElapsedCpuTime() - mProcessStart) 107 + " ms, user processes used " + (sysCpu[0] + sysCpu[1] - mUserStart) 108 * 10 + " ms, kernel used " + (sysCpu[2] - mSystemStart) * 10 109 + " ms, idle took " + (sysCpu[3] - mIdleStart) * 10 110 + " ms and irq took " + (sysCpu[4] + sysCpu[5] + sysCpu[6] - mIrqStart) 111 * 10 + " ms, " + uiInfo; 112 if (LOGD_ENABLED) { 113 Log.d(LOGTAG, performanceString + "\nWebpage: " + url); 114 } 115 if (url != null) { 116 // strip the url to maintain consistency 117 String newUrl = new String(url); 118 if (newUrl.startsWith("http://www.")) { 119 newUrl = newUrl.substring(11); 120 } else if (newUrl.startsWith("http://")) { 121 newUrl = newUrl.substring(7); 122 } else if (newUrl.startsWith("https://www.")) { 123 newUrl = newUrl.substring(12); 124 } else if (newUrl.startsWith("https://")) { 125 newUrl = newUrl.substring(8); 126 } 127 if (LOGD_ENABLED) { 128 Log.d(LOGTAG, newUrl + " loaded"); 129 } 130 } 131 } 132 } 133 } 134