English 中文(简体)
Cassandra 1.x and appropriate JNA setup
原标题:Cassandra 1.x and proper JNA setup
  • 时间:2011-11-02 12:31:25
  •  标签:
  • cassandra

是否有适当的日本国家组合的文件?

I do not understand few things:

(1) JNA是否使用过千兆克疗法。

2) 我是否在使用日本宇宙开发公司时需要缩小最大差距?

3) How do I limit RAM allocated by JNA?

4) Where can I see / monitor row cache size?

5) I ve configured JNA just for test on my dev computer and so far I ve noticed serious performance issues (high cpu usage on heavy write load), so I must be doing something wrong.... I ve just copied JNA jars into Cassandra/lib, without installing any native libs. Thanks, Maciej

最佳回答

就像你再次专门谈论基于日本的行道。

1) No

2) Yes, other things being equal

3) 适当配置浏览量

4) 哥伦Family斯店的JMX

5) the off-heap cache uses less CPU under writes than the in-heap one (it just invalidates updated rows, instead of updating them in a write-through fashion) so I d say something else is wrong. Be sure to rule out swapping because of (2).

问题回答

暂无回答




相关问题
How does Voldemort compare to Cassandra?

How does Voldemort compare to Cassandra? I m not talking about size of community and only want to hear from people who have actually used both. Especially I m interested in: How they dynamically ...

How does Cassandra rebalance when nodes go down?

Does anyone have experience with Cassandra when nodes go down or are unavailable? I am mostly interested in whether the cluster rebalances and what happens when the nodes come online, or are replaced ...

Cassandra time series data

We are looking at using Cassandra to store a stream of information coming from various sources. One issue we are facing is the best way to query between two dates. For example we will need to ...

Picking a database technology

We re setting out to build an online platform (API, Servers, Data, Wahoo!). For context, imagine that we need to build something like twitter, but with the comments (tweets) organized around a live ...

Row count of a column family in Cassandra

Is there a way to get a row count (key count) of a single column family in Cassandra? get_count can only be used to get the column count. For instance, if I have a column family containing users and ...

Update an existing column value

What happens when a new value for an existing column is added? Will the older value be overwritten by the new value? Or the older value will also retain and can be retrieved (similar to simpleDB)?

Cassandra Vs Amazon SimpleDB

I m working on an application where data size and SQL queries are going to be heavy. I am thinking between Cassandra or Amazon SimpleDB. Can you please suggest which is more suitable in this kind of ...

Cassandra load balancing with an ordered partitioner?

So I see here that Cassandra does not have automatic load balancing, which comes into view when using the ordered partitioner (a certain common range of values of a group of rows would be stored on a ...

热门标签