实验环境中修改后的crushmap如下: # begin crush map
tunable choose_local_tries 0
tunable choose_local_fallback_tries 0
tunable choose_total_tries 50
tunable chooseleaf_descend_once 1
# devices
devi...
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其他好文 时间:
2014-08-13 19:37:57
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324
利用了随机数方法终于知道错在哪了,中间如果出现连乘还是会yi...
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其他好文 时间:
2014-08-12 13:34:54
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192
我觉得数学类的题目,每一道都有很好的解决方法,都很有保存的意义和价值。
这道题目里面,巧妙地运用了 唯一分解定理,辅以素数的eratosthenes筛法构造,很好地解决了题目。值得思考和深入的学习。
#include
#include
#include
#include
#include
using namespace std;
vector primes;
const int ma...
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其他好文 时间:
2014-08-11 17:57:02
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158
There are many websites that allow you to custom handbags at very affordable prices. Custom diaper bags are usually more expensive, because they tend ...
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其他好文 时间:
2014-08-11 14:30:02
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318
How to choose q() to sample theta? Usally gausian, for the parameter u and sigma, we can get from cross validation.Importance sampling can only work o...
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其他好文 时间:
2014-08-11 11:47:22
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171
最近学习EntityFramework,于是接触了LinqPad这款享誉已久的软件,深感相见恨晚。软件具体不多做介绍了,只简单介绍下使用方法。数据库操作添加数据库连接1,首先通过点击Add connection打开Choose Data Context窗口2,选择Defalt(LINQ to SQL...
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其他好文 时间:
2014-08-08 20:45:26
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371
101.Identify two situations in which you can use Data Recovery Advisor for recovery. (Choose two.)A. The user has dropped an important table that need...
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其他好文 时间:
2014-08-06 22:00:42
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721
200.Which operation requires that you create an auxiliary instance manually before executing theoperation? (Choose all that apply.)A. Backup-based dat...
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其他好文 时间:
2014-08-06 21:51:22
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2954
1.如何选择PHP版本?Which version do I choose?IISIf you are using PHP as FastCGI with IIS you should use the Non-Thread Safe (NTS) versions of PHP.ApachePleas...
String
Problem Description
You hava a non-empty string which consists of lowercase English letters and may contain at most one '?'. Let's choose non-empty substring G from S (it can be G = S...
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其他好文 时间:
2014-08-05 19:29:50
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240