Comments (9)
应该是在lycsb里读取记录所有workload的操作,然后对应操作目标数据库系统,最后算出时间等数据。原始YCSB是一个测试项目,可以用它的框架来进行数据库性能测试,其底层其实就是读取增删改查等操作,对应操作目标数据库系统,并测出时间等性能。但是由于嵌入新系统比较麻烦,并且是java开发,所以本次课程设计TA导出了操作的具体命令,你们只需在lycsb和ycsb里读取并操作LevelDB和FPTreeDB即可。
from 2019-dbms-project.
可是,在所给的workloads文件夹里,都只是包含数据的txt文件,所以我应该是读取自己下载下来的YCSB文件夹里的/workloads/workloada吗?
from 2019-dbms-project.
对啊,都是读取里面的数据文件。分为load和run阶段,有不同读写比以及数据量的数据文件。
from 2019-dbms-project.
学长,在lycsb.cpp中uint64_t 是怎么和char * 联系起来的?
from 2019-dbms-project.
UPDATE 1495948725458769726
学长,还有一个问题,在lycsb.ccp run操作的时候,update是怎么操作的,是把谁更新成这个数字
from 2019-dbms-project.
from 2019-dbms-project.
char*就是一个指针格式,方便语言按1字节寻址,指向uint64_t类型的变量没问题
from 2019-dbms-project.
学长,您说的前八个字节让我很迷糊啊。网上说如果这些数字是以字符串表示,那么数字多少为就是多少个字节,那么按理说取前面8个数不就好了吗?如果不是那又是为什么呢?还有比如说这个例子:1495948725458769726,那么他的前八个字节是什么呢?
from 2019-dbms-project.
from 2019-dbms-project.
Related Issues (20)
- pmem_map_file(path, len, flags, mode, mlenp, is_pmemp);这里的参数的path,mode,mlenp,flags是从哪里得到呢? HOT 1
- 关于ycsb的数据格式 HOT 3
- README可以在后续中进一步补充完善吗? HOT 3
- maxFileId HOT 1
- newLeafGroup HOT 2
- 关于系统说明书
- 关于测试文件run中的update 因为键和值是相同的,可以理解为是和插入数据等效吗 HOT 1
- LeafGroup与freeList HOT 1
- lycsb测试leveldb的编译问题 HOT 3
- 关于workloads
- fptree_test.cpp 错误 HOT 2
- 询问叶节点分裂的时机
- degree定义 HOT 5
- 节点的问题 HOT 1
- 关于叶分裂的处理问题 HOT 1
- 关于test HOT 2
- fptree的期望性能 HOT 5
- 关于叶子节点的默认的度大小 HOT 2
- 关于micro-log HOT 1
- 关于性能 HOT 1
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from 2019-dbms-project.