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我租了一台 Joyent SmartOS 机器来为我的项目托管 Neo4j 服务器。

该机器是超小型 0.5 GB (1 vCPU)，这意味着它具有 512 兆字节的 RAM。

您会推荐什么而不是以下默认的Neostore。设置？

neostore.nodestore.db.mapped_memory=25M
neostore.relationshipstore.db.mapped_memory=50M
neostore.propertystore.db.mapped_memory=90M
neostore.propertystore.db.strings.mapped_memory=130M
neostore.propertystore.db.arrays.mapped_memory=130M

如果需要，一些 CPU 信息：

# psrinfo -pv
The physical processor has 6 cores and 12 virtual processors (1 3 5 7 9 11 13 15 17 19 21 23)
  The core has 2 virtual processors (1 13)
  The core has 2 virtual processors (3 15)
  The core has 2 virtual processors (5 17)
  The core has 2 virtual processors (7 19)
  The core has 2 virtual processors (9 21)
  The core has 2 virtual processors (11 23)
    x86 (GenuineIntel 206C2 family 6 model 44 step 2 clock 2400 MHz)
      Intel(r) Xeon(r) CPU           E5645  @ 2.40GHz
The physical processor has 6 cores and 12 virtual processors (0 2 4 6 8 10 12 14 16 18 20 22)
  The core has 2 virtual processors (0 12)
  The core has 2 virtual processors (2 14)
  The core has 2 virtual processors (4 16)
  The core has 2 virtual processors (6 18)
  The core has 2 virtual processors (8 20)
  The core has 2 virtual processors (10 22)
    x86 (GenuineIntel 206C2 family 6 model 44 step 2 clock 2400 MHz)
      Intel(r) Xeon(r) CPU           E5645  @ 2.40GHz
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1 回答 1

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您的配置中的neostore.xxxx.mapped_memory设置应该理想地匹配您的 graph.db 目录中相应文件的大小。

假设您有 512 MB RAM 可用并且您的图表约为 250 MB，则为 OS和JVM 堆提供了约 250 MB，我认为这太小了。

如果你的盒子有 2G，我会计算：

  • 250 MB 映射内存
  • 1 GB Java 堆（又名 -Xmx1g -Xms1g）
  • 750 MB 操作系统（其余）
于 2013-02-03T11:53:23.023 回答