1 | var loki = require('../src/lokijs.js'),
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2 | db = new loki('perftest'),
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3 | samplecoll = null,
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4 | uniquecoll = null,
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5 | arraySize = 5000,
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6 | totalIterations = 20000,
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7 | results = [],
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8 | getIterations = 2000000;
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9 |
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10 | function genRandomVal() {
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11 | var text = "";
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12 | var possible = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
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13 |
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14 | for (var i = 0; i < 20; i++)
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15 | text += possible.charAt(Math.floor(Math.random() * possible.length));
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16 |
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17 | return text;
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18 | }
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19 |
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20 |
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21 |
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22 |
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23 |
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24 |
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25 | function initializeDB() {
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26 | db = new loki('perftest');
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27 |
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28 | var start, end, totalTime;
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29 | var totalTimes = [];
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30 | var totalMS = 0.0;
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31 |
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32 | samplecoll = db.addCollection('samplecoll');
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33 | |
34 |
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35 |
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36 |
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37 |
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38 |
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39 |
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40 |
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41 |
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42 |
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43 | for (var idx = 0; idx < arraySize; idx++) {
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44 | var v1 = genRandomVal();
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45 | var v2 = genRandomVal();
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46 |
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47 | start = process.hrtime();
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48 | samplecoll.insert({
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49 | customId: idx,
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50 | val: v1,
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51 | val2: v2,
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52 | val3: "more data 1234567890"
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53 | });
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54 | end = process.hrtime(start);
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55 | totalTimes.push(end);
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56 | }
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57 |
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58 | for (var idx = 0; idx < totalTimes.length; idx++) {
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59 | totalMS += totalTimes[idx][0] * 1e3 + totalTimes[idx][1] / 1e6;
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60 | }
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61 |
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62 |
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63 |
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64 | totalMS = totalMS.toFixed(2);
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65 | var rate = arraySize * 1000 / totalMS;
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66 | rate = rate.toFixed(2);
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67 | console.log("load (insert) : " + totalMS + "ms (" + rate + ") ops/s");
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68 | }
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69 |
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70 |
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71 |
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72 |
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73 |
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74 | function initializeUnique() {
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75 | uniquecoll = db.addCollection('uniquecoll', {
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76 | unique: ['customId']
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77 | });
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78 |
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79 | for (var idx = 0; idx < arraySize; idx++) {
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80 | var v1 = genRandomVal();
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81 | var v2 = genRandomVal();
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82 |
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83 | uniquecoll.insert({
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84 | customId: (arraySize - idx),
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85 | val: v1,
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86 | val2: v2,
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87 | val3: "more data 1234567890"
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88 | });
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89 | }
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90 | }
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91 |
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92 |
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93 |
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94 |
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95 |
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96 |
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97 | function initializeWithEval() {
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98 | var dbTest = new loki('perfInsertWithEval');
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99 |
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100 | var start, end, totalTime;
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101 | var totalTimes = [];
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102 | var totalMS = 0.0;
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103 |
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104 | var coll = dbTest.addCollection('samplecoll', {
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105 | indices: ['customId'],
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106 | asyncListeners: false,
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107 | disableChangesApi: true,
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108 | transactional: false,
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109 | clone: false
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110 | });
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111 |
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112 | var dv = coll.addDynamicView('test');
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113 | dv.applyFind({
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114 | 'customId': {
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115 | '$lt': arraySize / 4
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116 | }
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117 | });
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118 |
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119 | for (var idx = 0; idx < arraySize; idx++) {
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120 | var v1 = genRandomVal();
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121 | var v2 = genRandomVal();
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122 |
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123 | start = process.hrtime();
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124 | coll.insert({
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125 | customId: idx,
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126 | val: v1,
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127 | val2: v2,
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128 | val3: "more data 1234567890"
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129 | });
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130 | end = process.hrtime(start);
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131 | totalTimes.push(end);
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132 | }
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133 |
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134 | for (var idx = 0; idx < totalTimes.length; idx++) {
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135 | totalMS += totalTimes[idx][0] * 1e3 + totalTimes[idx][1] / 1e6;
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136 | }
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137 |
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138 | totalMS = totalMS.toFixed(2);
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139 | var rate = arraySize * 1000 / totalMS;
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140 | rate = rate.toFixed(2);
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141 | console.log("load (insert with dynamic view registered) : " + totalMS + "ms (" + rate + ") ops/s");
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142 | }
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143 |
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144 | function benchUniquePerf() {
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145 | var start, end;
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146 | var totalTimes = [];
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147 | var totalMS = 0.0;
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148 |
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149 | for (var idx = 0; idx < getIterations; idx++) {
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150 | var customidx = Math.floor(Math.random() * arraySize) + 1;
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151 |
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152 | start = process.hrtime();
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153 | var results = uniquecoll.by('customId', customidx);
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154 | end = process.hrtime(start);
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155 | totalTimes.push(end);
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156 | }
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157 |
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158 | for (var idx = 0; idx < totalTimes.length; idx++) {
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159 | totalMS += totalTimes[idx][0] * 1e3 + totalTimes[idx][1] / 1e6;
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160 | }
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161 |
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162 | totalMS = totalMS.toFixed(2);
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163 | var rate = getIterations * 1000 / totalMS;
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164 | rate = rate.toFixed(2);
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165 | console.log("coll.by() : " + totalMS + "ms (" + rate + ") ops/s");
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166 | };
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167 |
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168 | function testperfGet() {
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169 | var start, end;
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170 | var totalTimes = [];
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171 | var totalMS = 0.0;
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172 |
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173 | for (var idx = 0; idx < getIterations; idx++) {
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174 | var customidx = Math.floor(Math.random() * arraySize) + 1;
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175 |
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176 | start = process.hrtime();
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177 | var results = samplecoll.get(customidx);
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178 | end = process.hrtime(start);
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179 | totalTimes.push(end);
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180 | }
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181 |
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182 | for (var idx = 0; idx < totalTimes.length; idx++) {
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183 | totalMS += totalTimes[idx][0] * 1e3 + totalTimes[idx][1] / 1e6;
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184 | }
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185 |
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186 | totalMS = totalMS.toFixed(2);
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187 | var rate = getIterations * 1000 / totalMS;
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188 | rate = rate.toFixed(2);
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189 | console.log("coll.get() : " + totalMS + "ms (" + rate + ") ops/s");
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190 | }
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191 |
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192 | function testperfFind(multiplier) {
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193 | var start, end;
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194 | var totalTimes = [];
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195 | var totalMS = 0;
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196 |
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197 | var loopIterations = totalIterations;
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198 | if (typeof (multiplier) != "undefined") {
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199 | loopIterations = loopIterations * multiplier;
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200 | }
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201 |
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202 | for (var idx = 0; idx < loopIterations; idx++) {
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203 | var customidx = Math.floor(Math.random() * arraySize) + 1;
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204 |
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205 | start = process.hrtime();
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206 | var results = samplecoll.find({
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207 | 'customId': customidx
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208 | });
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209 | end = process.hrtime(start);
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210 | totalTimes.push(end);
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211 | }
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212 |
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213 | for (var idx = 0; idx < totalTimes.length; idx++) {
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214 | totalMS += totalTimes[idx][0] * 1e3 + totalTimes[idx][1] / 1e6;
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215 | }
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216 |
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217 | totalMS = totalMS.toFixed(2);
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218 | var rate = loopIterations * 1000 / totalMS;
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219 | rate = rate.toFixed(2);
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220 | console.log("coll.find() : " + totalMS + "ms (" + rate + " ops/s) " + loopIterations + " iterations");
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221 | }
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222 |
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223 | function testperfRS(multiplier) {
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224 | var start, end;
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225 | var totalTimes = [];
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226 | var totalMS = 0;
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227 |
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228 | var loopIterations = totalIterations;
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229 | if (typeof (multiplier) != "undefined") {
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230 | loopIterations = loopIterations * multiplier;
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231 | }
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232 |
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233 | for (var idx = 0; idx < loopIterations; idx++) {
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234 | var customidx = Math.floor(Math.random() * arraySize) + 1;
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235 |
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236 | start = process.hrtime();
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237 | var results = samplecoll.chain().find({
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238 | 'customId': customidx
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239 | }).data();
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240 | end = process.hrtime(start)
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241 | totalTimes.push(end);
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242 | }
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243 |
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244 | for (var idx = 0; idx < totalTimes.length; idx++) {
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245 | totalMS += totalTimes[idx][0] * 1e3 + totalTimes[idx][1] / 1e6;
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246 | }
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247 |
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248 | totalMS = totalMS.toFixed(2);
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249 | var rate = loopIterations * 1000 / totalMS;
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250 | rate = rate.toFixed(2);
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251 | console.log("resultset chained find() : " + totalMS + "ms (" + rate + " ops/s) " + loopIterations + " iterations");
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252 | }
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253 |
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254 | function testperfDV(multiplier) {
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255 | var start, end;
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256 | var start2, end2, totalTime2 = 0.0;
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257 | var totalTimes = [];
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258 | var totalTimes2 = [];
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259 | var totalMS = 0;
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260 | var totalMS2 = 0;
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261 |
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262 | var loopIterations = totalIterations;
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263 | if (typeof (multiplier) != "undefined") {
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264 | loopIterations = loopIterations * multiplier;
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265 | }
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266 |
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267 | for (var idx = 0; idx < loopIterations; idx++) {
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268 | var customidx = Math.floor(Math.random() * arraySize) + 1;
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269 |
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270 | start = process.hrtime();
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271 | var dv = samplecoll.addDynamicView("perfview");
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272 | dv.applyFind({
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273 | 'customId': customidx
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274 | });
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275 | var results = dv.data();
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276 | end = process.hrtime(start);
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277 | totalTimes.push(end);
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278 |
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279 |
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280 | start2 = process.hrtime();
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281 | var results = dv.data();
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282 | end2 = process.hrtime(start2);
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283 | totalTimes2.push(end2);
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284 |
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285 | samplecoll.removeDynamicView("perfview");
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286 | }
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287 |
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288 | for (var idx = 0; idx < totalTimes.length; idx++) {
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289 | totalMS += totalTimes[idx][0] * 1e3 + totalTimes[idx][1] / 1e6;
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290 | totalMS2 += totalTimes2[idx][0] * 1e3 + totalTimes2[idx][1] / 1e6;
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291 | }
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292 |
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293 | totalMS = totalMS.toFixed(2);
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294 | totalMS2 = totalMS2.toFixed(2);
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295 | var rate = loopIterations * 1000 / totalMS;
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296 | var rate2 = loopIterations * 1000 / totalMS2;
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297 | rate = rate.toFixed(2);
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298 | rate2 = rate2.toFixed(2);
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299 |
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300 | console.log("loki dynamic view first find : " + totalMS + "ms (" + rate + " ops/s) " + loopIterations + " iterations");
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301 | console.log("loki dynamic view subsequent finds : " + totalMS2 + "ms (" + rate2 + " ops/s) " + loopIterations + " iterations");
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302 | }
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303 |
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304 | initializeDB();
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305 |
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306 | initializeUnique();
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307 |
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308 | testperfGet();
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309 | benchUniquePerf();
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310 |
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311 | console.log("");
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312 | console.log("-- Benchmarking query on NON-INDEXED column --");
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313 | testperfFind();
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314 | testperfRS();
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315 | testperfDV();
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316 |
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317 | console.log("");
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318 | console.log("-- ADDING BINARY INDEX to query column and repeating benchmarks --");
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319 | samplecoll.ensureIndex("customId");
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320 | testperfFind(20);
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321 | testperfRS(15);
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322 | testperfDV(15);
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