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https://issues.apache.org/jira/browse/THRIFT-1815?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jens Geyer closed THRIFT-1815.
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> Code generators line buffer output
> ----------------------------------
>
> Key: THRIFT-1815
> URL: https://issues.apache.org/jira/browse/THRIFT-1815
> Project: Thrift
> Issue Type: Improvement
> Components: Compiler (General)
> Affects Versions: 0.9
> Reporter: Andrew Gaul
> Labels: performance
> Fix For: 0.9.1, 0.9.2
>
> Attachments: THRIFT-1815-endl-patch-for-go-v2.patch,
> thrift-1815-compiler-line-buffering.patch
>
>
> This results in slow performance on FUSE- and network-based filesystems,
> e.g., eCryptfs. std::ostream << std::endl emits a newline and flushes
> buffers to the kernel[1], yielding excessive system calls. Instead, emit
> "\n" which does the equivalent without the flush[2]. The attached patch
> accomplishes this while minimizing code churn by removing "using namespace
> std" and introducing a static variable endl.
> [1] http://www.cplusplus.com/reference/ios/endl/
> [2]
> http://stackoverflow.com/questions/5492380/what-is-the-c-iostream-endl-fiasco
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