Question

在我的Google Compute服务器上使用3.75 GB的RAM运行rspec模型测试时，我经常会遇到内存分配错误，而在使用2 GB内存的普通计算机上运行相同的测试时，我无法获得这些错误。我使用的命令是＆rs; rspec spec / models＆＃39;以便所有测试都运行。当我运行任何其他类型的rspec测试时，这不会发生。

在我的普通机器上，584个测试中只有2个失败（目前这是预期的行为）。但是，当我使用Google Compute服务器时会出现148次失败，这是我从顶部获得的输出示例：

Run options: include {:focus=>true}

All examples were filtered out; ignoring {:focus=>true}
....................F.FF.......................................................................................................................FFF.FF.F.............................................................................................................................F..F.F.F..FF.F...F.FF..F..F..F....F.FFF..FF.F.FF.FFFF.F.FFFFF.FF..F.FF.FFF...F.FFF...FFFF.FFFF.F.F.FF...............................................FF..F.F.FF.FF.FF.F...F.F.F..F.F.F.F......F.F...F.F.F.FF..FF.F.FFF..FF.FF.F..F..........FFFFFFFFFFFFFFFFFFFF
An error occurred in an after(:all) hook.
  Errno::ENOMEM: Cannot allocate memory - rm -rf /home/patrick/terrabase/imperial/files/test
  occurred at /home/patrick/.rvm/gems/ruby-1.9.3-p194@imperialhorizons/gems/activesupport-3.2.22/lib/active_support/core_ext/kernel/agnostics.rb:7:in ``'

.
An error occurred in an after(:all) hook.
  Errno::ENOMEM: Cannot allocate memory - rm -rf /home/patrick/terrabase/imperial/files/test
  occurred at /home/patrick/.rvm/gems/ruby-1.9.3-p194@imperialhorizons/gems/activesupport-3.2.22/lib/active_support/core_ext/kernel/agnostics.rb:7:in ``'

....
An error occurred in an after(:all) hook.
  Errno::ENOMEM: Cannot allocate memory - rm -rf /home/patrick/terrabase/imperial/files/test
  occurred at /home/patrick/.rvm/gems/ruby-1.9.3-p194@imperialhorizons/gems/activesupport-3.2.22/lib/active_support/core_ext/kernel/agnostics.rb:7:in ``'

.
An error occurred in an after(:all) hook.
  Errno::ENOMEM: Cannot allocate memory - rm -rf /home/patrick/terrabase/imperial/files/test
  occurred at /home/patrick/.rvm/gems/ruby-1.9.3-p194@imperialhorizons/gems/activesupport-3.2.22/lib/active_support/core_ext/kernel/agnostics.rb:7:in ``'

.

...继续这样做直到失败＆＃39;底部的部分：

142) LibraryBarcodeImport#process_row update existing student if the cid matches should set the imported count to 1
     Failure/Error: let(:library_barcode_import) { FactoryGirl.build(:library_barcode_import, log_text: "", imported_count: 0) }
     Errno::ENOMEM:
       Cannot allocate memory - file -b --mime '/home/patrick/terrabase/imperial/spec/testfiles/barcodes.xlsx'
     # ./spec/models/library_barcode_import_spec.rb:57:in `block (3 levels) in <top (required)>'
     # ./spec/models/library_barcode_import_spec.rb:103:in `block (4 levels) in <top (required)>'

我注意到有些测试在运行之前就失败了。例如，library_barcode_import_spec.rb中的第57行是：

let(:library_barcode_import) { FactoryGirl.build(:library_barcode_import, log_text: "", imported_count: 0) }

...而第103行是在＆＃39;之前的＆＃39;语句：

before do
    library_barcode_import.process_row(spreadsheet_row, 1, checking )
end

软件：

Ruby 1.9.3-p194
Rails 3.2.22
Rspec 2.13.1

虚拟机规格：

n1-standard-1（1个vCPU，3.75 GB内存）
CPU平台：Intel Sandy Bridge
操作系统：Ubuntu 14.04 64位，内核：3.19.0-43-generic
硬盘：10 GB

物理机器规格：

东芝Satellite Pro A300
CPU：Intel Pentium Dual CPU T2390 @ 1.86 GHz
操作系统：Linux Mint 17.3 64位

虚拟机上没有可用的RAM，正如您可以从＆＃39; free -m＆＃39;

的输出中看到的那样。

             total       used       free     shared    buffers     cached
Mem:          3700        947       2753         14         80        531
-/+ buffers/cache:        336       3364
Swap:            0          0          0

来自＆＃39; dmesg |的输出grep -i virtual＆＃39;表明服务器依赖于KVM：

[    0.000000] Booting paravirtualized kernel on KVM

我在Google上搜索时找不到任何有助于解决问题的方法。有谁知道可能导致这种情况的原因？

Rspec模型测试由于Google Compute VM上的ENOMEM而失败，但在物理机上则没有

0 个答案: