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SystemTap 笔记 (12)—— Associate array和foreach

Posted by nanxiao on 十一月 26, 2015 in SystemTap 笔记 |

SystemTap也提供associate array,并且必须是global变量: global array […]

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Haskell笔记 (2)—— if语句

Posted by nanxiao on 十一月 26, 2015 in Haskell笔记 |

(1) The difference between Haskell’s if statement […]

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Haskell笔记 (1)—— 函数

Posted by nanxiao on 十一月 26, 2015 in Haskell笔记 |

(1) In Haskell, functions are called by writing the fun […]

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SLES12版本上Xen的一些变化

Posted by nanxiao on 十一月 25, 2015 in 技术 |

今天在网上找到一篇文档,描述了SLES12版本上Xen的一些变化: (1)grub2 SLES12上使用gru […]

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“Memory order”分析笔记

Posted by nanxiao on 十一月 25, 2015 in 技术 |

以下图片摘自Memory Reordering Caught in the Act,它描述了memory re […]

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Linux kernel 笔记 (53)——为什么“interrupt handler”不能被抢占?

Posted by nanxiao on 十一月 24, 2015 in Linux kernel 笔记 |

Interrupt handler会复用当前被中断task的kernel stack,它并不是一个真正的tas […]

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Linux kernel 笔记 (52)——使用“spinlock”的进程不能被抢占

Posted by nanxiao on 十一月 24, 2015 in Linux kernel 笔记 |

以下摘自这封邮件: A process cannot be preempted nor sleep while […]

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Linux kernel 笔记 (51)——”atomic context”

Posted by nanxiao on 十一月 24, 2015 in Linux kernel 笔记 |

以下摘自这篇文章: Kernel code generally runs in one of two fund […]

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Linux kernel 笔记 (50)——”context switch”和”mode switch”

Posted by nanxiao on 十一月 24, 2015 in Linux kernel 笔记 |

以下内容摘自stackoverflow上的这个帖子: At a high level, there are t […]

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SystemTap 笔记 (11)—— 命令行参数

Posted by nanxiao on 十一月 23, 2015 in SystemTap 笔记 |

SystemTap使用$或@传递命令行参数:$传递整数参数,@传递字符串参数。举例如下: # cat test […]

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