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lgqss avatar lgqss commented on July 18, 2024

扩容,迁移,负载均衡功能都已具备,内部是在线上使用的。由于运维监控工具的缺乏,目前还不建议外部用户用在重要的生产环境。
做了sysbench,写性能与tidb相当,读性能比tidb差,大约是tidb的70%左右。当然也一直在优化。

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yongs207 avatar yongs207 commented on July 18, 2024

写性能由于braft相对tikv的优势,不是理论上有优势才对?tikv都是单线程处理的

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tigerzhang avatar tigerzhang commented on July 18, 2024

读性能比 tidb 差主要是什么原因

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lgqss avatar lgqss commented on July 18, 2024

影响性能的因素还是很多的,rocksdb的基于skiplist的memtable写入性能并不好,写入很多时候瓶颈在此。读取性能的一个只要原因是我们基于pb的存储格式解析耗时比较大,另外一些不必要的内存分配啥的也会影响性能。
@yongs207 tikv单线程处理是指写rocksdb那块单线程吗,抱歉我们并没有仔细研究过tikv内部实现。

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tullyliu avatar tullyliu commented on July 18, 2024

sysbench的测试是直接跟tidb官方测试数据对比的结果,但是tidb使用的服务器硬件跟我们内部线上服务器是有差异的,我们还没有在同样的硬件上运行tidb的sysbench测试集。同时基础测试并不能代表业务场景的性能,如果关注性能,请根据实际的业务sql进行性能测试,这样会有助于选型的决策。

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yongs207 avatar yongs207 commented on July 18, 2024

tikv 最新的版本才支持多线程的raft实现

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