Crystal Lang编译器速度

时间:2017-06-18 10:23:10

标签: crystal-lang

我只是想知道Crystal编程语言的编译速度。感觉相对缓慢:

➜ ~/Code/crystal/crystal_scheduler (master ✘)✹✭ ᐅ time crystal build --release src/crystal_scheduler.cr
34.64s user 1.10s system 93% cpu 38.174 total
➜ ~/Code/crystal/crystal_scheduler (master ✘)✹✭ ᐅ time crystal build --release src/crystal_scheduler.cr
36.11s user 0.83s system 93% cpu 39.465 total
➜ ~/Code/crystal/crystal_scheduler (master ✘)✹✭ ᐅ time crystal build src/crystal_scheduler.cr
8.09s user 0.89s system 181% cpu 4.956 total

代码相对较小,有两个分片,两个类。与我从Java中了解的其他编译时间相比,这感觉很长。

我得到的版本编译速度很慢,但git书中说明:

  

原因是没有完全优化的性能是   仍然很好,并提供快速编译时间,所以你可以使用   水晶命令几乎就像是翻译一样。

但8s声称你可以使用它“感觉有点慢”“几乎就像是翻译一样。”

我只是想知道是否   - a)我的编译速度特别慢/编译时间正常   - b)与您体验中的其他语言相比如何?

汇编统计:

Parse:                             00:00:00.0007470 (   0.25MB)
Semantic (top level):              00:00:00.3968920 (  36.08MB)
Semantic (new):                    00:00:00.0019210 (  44.08MB)
Semantic (type declarations):      00:00:00.0355760 (  44.08MB)
Semantic (abstract def check):     00:00:00.0012690 (  44.08MB)
Semantic (ivars initializers):     00:00:00.0094640 (  44.08MB)
Semantic (cvars initializers):     00:00:00.0394420 (  44.08MB)
Semantic (main):                   00:00:00.6025030 ( 108.14MB)
Semantic (cleanup):                00:00:00.0012750 ( 108.14MB)
Semantic (recursive struct check): 00:00:00.0018930 ( 108.14MB)
Codegen (crystal):                 00:00:00.7354530 ( 140.27MB)
Codegen (bc+obj):                  00:00:33.2533520 ( 140.27MB)
Codegen (linking):                 00:00:00.3647440 ( 140.27MB)

我的系统:

➜ crystal -v
Crystal 0.22.0 (2017-04-20) LLVM 4.0.0

硬件概述:

 Model Name:    MacBook Pro
 Model Identifier:  MacBookPro11,1
 Processor Name:    Intel Core i5
 Processor Speed:   2,8 GHz
 Number of Processors:  1
 Total Number of Cores: 2
 L2 Cache (per Core):   256 KB
 L3 Cache:  3 MB
 Memory:    16 GB

1 个答案:

答案 0 :(得分:8)

使用crystal build --no-debug my_code.cr来提高编译速度。

请参阅:Why Crystal use too much memory?Crystal for large scale programs

另外,我建议你添加--progress标志。

进度标志添加了有关编译过程的更多信息,显示了在codegen阶段生成的每个文件的统计信息。

>>> crystal build -s --no-debug -p my_code.cr
Parse:                             00:00:00.0008560 (   0.34MB)
Semantic (top level):              00:00:00.2588280 (  27.91MB)
Semantic (new):                    00:00:00.0018450 (  35.91MB)
Semantic (type declarations):      00:00:00.0263890 (  35.91MB)
Semantic (abstract def check):     00:00:00.0015270 (  35.91MB)
Semantic (ivars initializers):     00:00:00.0018980 (  35.91MB)
Semantic (cvars initializers):     00:00:00.0158470 (  35.91MB)
Semantic (main):                   00:00:00.4168150 (  60.10MB)
Semantic (cleanup):                00:00:00.0010650 (  60.10MB)
Semantic (recursive struct check): 00:00:00.0008110 (  60.10MB)
Codegen (crystal):                 00:00:00.3381910 (  68.10MB)
[12/13] [67/215] Codegen (bc+obj)
        ~~~~~~~~
          (1)

(1)处理的文件数量,可以在Crystal缓存目录中看到这些文件。

顺便说一句,我在一台旧的英特尔赛扬PC上用不到30秒的时间编制了一个完整的Amber项目,并有10个分片。不要在开发阶段使用--release标志,而是在生产阶段使用>>> cat /proc/cpuinfo | grep "model name" model name : Intel(R) Celeron(R) 2957U @ 1.40GHz >>> shards list Shards installed: * amber (0.1.3) * radix (0.3.8) * kilt (0.1.0) * slang (1.6.1) * redis (1.8.0) * quartz-mailer (0.1.0) * kilt (0.1.0) * smtp (0.1.0) * granite_orm (0.6.2) * kemalyst-validators (0.2.0) * db (0.4.2) * sqlite3 (0.8.2) * db (0.4.2) >>> time crystal build -p src/app.cr -o app --no-debug real 0m24.320s user 0m26.700s sys 0m1.437s >>> time crystal build -p src/app.cr -o app --no-debug real 0m6.225s user 0m5.727s sys 0m0.970s 标志。 (LLVM需要花费大量时间进行优化)

<?xml version="1.0" encoding="UTF-8"?>
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      <parameter name="transport.vfs.ContentType">text/xml</parameter>
      <parameter name="transport.vfs.FileNamePattern">.*\.xml</parameter>
      <parameter name="transport.vfs.Locking">enable</parameter>
      <parameter name="transport.vfs.ActionAfterProcess">MOVE</parameter>
      <parameter name="transport.vfs.MoveAfterProcess">file:///home/sashika/Desktop/VFS/process</parameter>
      <parameter name="transport.vfs.ActionAfterFailure">MOVE</parameter>
      <parameter name="transport.vfs.MoveAfterFailure">file:///home/sashika/Desktop/VFS/fail</parameter>
      <parameter name="transport.vfs.AutoLockRelease">false</parameter>
      <parameter name="transport.vfs.LockReleaseSameNode">false</parameter>
      <parameter name="transport.vfs.DistributedLock">false</parameter>
      <parameter name="transport.vfs.FileSortAttribute">NONE</parameter>
      <parameter name="transport.vfs.FileSortAscending">true</parameter>
      <parameter name="transport.vfs.CreateFolder">true</parameter>
      <parameter name="transport.vfs.Streaming">false</parameter>
      <parameter name="transport.vfs.Build">false</parameter>
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</inboundEndpoint>