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e0a04ac1 JA |
1 | # Sample job file demonstrating how to use zoned random distributionss |

2 | # to have skewed random accesses. This example has 50% of the accesses | |

3 | # to the first 5% of the file (50/5), 30% to the next 15% (30/15), and | |

4 | # finally 20% of the IO will end up in the remaining 80%. | |

5 | [zones] | |

6 | size=2g | |

7 | direct=1 | |

8 | bs=4k | |

9 | rw=randread | |

10 | norandommap | |

11 | random_distribution=zoned:50/5:30/15:20/ | |

12 | ||

057bc4a6 JA |
13 | # It's also possible to use zoned_abs to specify absolute sizes. For |

14 | # instance, if you do: | |

15 | # | |

16 | # random_distribution=zoned_abs:50/10G:30/100G:20/500G | |

17 | # | |

18 | # Then 50% of the access will be to the first 10G of the drive, 30% | |

19 | # will be to the next 100G, and 20% will be to the next 500G. | |

20 | ||

e0a04ac1 JA |
21 | # The above applies to all of reads/writes/trims. If we wanted to do |

22 | # something differently for writes, let's say 50% for the first 10% | |

23 | # and 50% for the remaining 90%, we could do it by adding a new section | |

24 | # after a a comma. | |

25 | ||

26 | # random_distribution=zoned:50/5:30/15:20/,50/10:50/90 |