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Posted to commits@iotdb.apache.org by ha...@apache.org on 2022/12/02 09:25:55 UTC
[iotdb] branch add_deploy_recommend updated: update star
This is an automated email from the ASF dual-hosted git repository.
haonan pushed a commit to branch add_deploy_recommend
in repository https://gitbox.apache.org/repos/asf/iotdb.git
The following commit(s) were added to refs/heads/add_deploy_recommend by this push:
new d190646c03 update star
d190646c03 is described below
commit d190646c031f6772d83bfe67ac7bd5840496a63e
Author: HTHou <hh...@outlook.com>
AuthorDate: Fri Dec 2 17:25:45 2022 +0800
update star
---
docs/zh/UserGuide/Reference/Deployment-Recommendation.md | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/docs/zh/UserGuide/Reference/Deployment-Recommendation.md b/docs/zh/UserGuide/Reference/Deployment-Recommendation.md
index 05b37277f4..637d04713f 100644
--- a/docs/zh/UserGuide/Reference/Deployment-Recommendation.md
+++ b/docs/zh/UserGuide/Reference/Deployment-Recommendation.md
@@ -92,10 +92,10 @@
##### 根据总序列数估计内存
-集群 DataNode 总堆内内存 (B) = 20 *(180 + 2 * 序列的全路径的平均字符数)* 序列总量 * 元数据副本数
+集群 DataNode 总堆内内存 (B) = 20 * (180 + 2 * 序列的全路径的平均字符数)* 序列总量 * 元数据副本数
每个 DataNode 内存配置推荐:集群 DataNode 总堆内内存 / DataNode 数目
假设需要用3C3D管理100万条序列,元数据采用3副本,序列名形如序列名形如 root.sg_1.d_10.s_100(约20字符),则:
-- 集群 DataNode 总堆内内存:20 *(180 + 2 * 20)* 1,000,000 * 3 = 13.2 GB
+- 集群 DataNode 总堆内内存:20 * (180 + 2 * 20)* 1,000,000 * 3 = 13.2 GB
- 每台 DataNode 的堆内内存配置为:13.2 GB / 3 = 4.4 GB
#### 磁盘估计
@@ -115,8 +115,8 @@ IoTDB 存储空间=数据存储空间 + 元数据存储空间 + 临时存储空
> 示例:1000设备,每个设备100 测点,共 100000 序列。整型。采样频率1Hz(每秒一次),存储1年,3副本,压缩比按 10 算,则数据存储空间占用:
-> * 简版:1000*100*12*86400*365*3/10=11T
-> * 完整版:1000设备*100测点*12字节每数据点*86400秒每天*365天每年*3副本/10压缩比=11T
+> * 简版:1000 * 100 * 12 * 86400 * 365 * 3 / 10 = 11T
+> * 完整版:1000设备 * 100测点 * 12字节每数据点 * 86400秒每天 * 365天每年 * 3副本 / 10压缩比 = 11T
##### 元数据磁盘空间