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使用groovy和gbench对文件操作的两种方式(append和writer)进行基准测试(来自：https://stackoverflow.com/questions/23552282/groovy-file-append-vs-file-newwriter)
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| @Grab(group='org.gperfutils', module='gbench', version='0.4.2-groovy-2.1') | |
| def b = benchmark { | |
| 'append' { | |
| def f = File.createTempFile('file', 'append') | |
| (1..1000).each { | |
| f.append(it.toString()) | |
| } | |
| } | |
| 'writer' { | |
| def f = File.createTempFile('file', 'writer') | |
| def w = f.withWriter{w-> | |
| (1..1000).each { | |
| w.write(it.toString()) | |
| } | |
| } | |
| } | |
| } | |
| b.prettyPrint( |
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| Environment | |
| =========== | |
| * Groovy: 2.2.1 | |
| * JVM: Java HotSpot(TM) 64-Bit Server VM (24.45-b08, Oracle Corporation) | |
| * JRE: 1.7.0_45 | |
| * Total Memory: 103.5 MB | |
| * Maximum Memory: 114 MB | |
| * OS: Windows 8 (6.2, amd64) | |
| Options | |
| ======= | |
| * Warm Up: Auto (- 60 sec) | |
| * CPU Time Measurement: On | |
| user system cpu real | |
| append 26028989 343758049 369787038 398199984 | |
| writer 395846 1425295 1821141 1960860 |
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