OrientDB/Can I 运行 在 EC2 micro 上的内存要求是什么？
What are memory requirments for OrientDB/Can I run on EC2 micro?
我想 运行 在 EC2 微型（免费层）实例上使用 OrientDB。我找不到提供内存要求的 OrientDB 官方文档，但是我 found this question that says 512MB 应该没问题。我正在 运行 安装一个 EC2 微型实例，它有 1GB 内存。但是，当我尝试 运行 OrientDB 时，出现如下所示的 JRE 错误。我最初的想法是我需要使用 -xmx 来增加 jre 内存，但我想这将是 shell 脚本来执行此操作。有没有人在 EC2 微型实例中成功 运行 OrientDB 或运行陷入这个问题？
OpenJDK 64-Bit Server VM warning: INFO: os::commit_memory(0x00000007a04a0000, 1431699456, 0) failed; error='Cannot allocate memory' (errno=12)
There is insufficient memory for the Java Runtime Environment to continue.
Native memory allocation (malloc) failed to allocate 1431699456 bytes for committing reserved memory.
An error report file with more information is saved as:
/tmp/jvm-14728/hs_error.log
错误日志的内容如下：
OS:Linux
uname:Linux 4.14.47-56.37.amzn1.x86_64 #1 SMP Wed Jun 6 18:49:01 UTC 2018 x86_64
libc:glibc 2.17 NPTL 2.17
rlimit: STACK 8192k, CORE 0k, NPROC 3867, NOFILE 4096, AS infinity
load average:0.00 0.00 0.00
/proc/meminfo:
MemTotal: 1011168 kB
MemFree: 322852 kB
MemAvailable: 822144 kB
Buffers: 83188 kB
Cached: 523056 kB
SwapCached: 0 kB
Active: 254680 kB
Inactive: 369952 kB
Active(anon): 18404 kB
Inactive(anon): 48 kB
Active(file): 236276 kB
Inactive(file): 369904 kB
Unevictable: 0 kB
Mlocked: 0 kB
SwapTotal: 0 kB
SwapFree: 0 kB
Dirty: 36 kB
Writeback: 0 kB
AnonPages: 18376 kB
Mapped: 31660 kB
Shmem: 56 kB
Slab: 51040 kB
SReclaimable: 41600 kB
SUnreclaim: 9440 kB
KernelStack: 1564 kB
PageTables: 2592 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 505584 kB
Committed_AS: 834340 kB
VmallocTotal: 34359738367 kB
VmallocUsed: 0 kB
VmallocChunk: 0 kB
AnonHugePages: 0 kB
ShmemHugePages: 0 kB
ShmemPmdMapped: 0 kB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
HugePages_Surp: 0
Hugepagesize: 2048 kB
DirectMap4k: 49152 kB
DirectMap2M: 999424 kB
CPU:total 1 (initial active 1) (1 cores per cpu, 1 threads per core) family 6 model 63 stepping 2, cmov, cx8, fxsr, mmx, sse, sse2, sse3, ssse3, sse4.1, sse4.2, popcnt, avx, avx2, aes, erms, tsc
/proc/cpuinfo:
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 63
model name : Intel(R) Xeon(R) CPU E5-2676 v3 @ 2.40GHz
stepping : 2
microcode : 0x3c
cpu MHz : 2400.043
cache size : 30720 KB
physical id : 0
siblings : 1
core id : 0
cpu cores : 1
apicid : 0
initial apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx rdtscp lm constant_tsc rep_good nopl xtopology cpuid pni pclmulqdq ssse3 fma cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand hypervisor lahf_lm abm cpuid_fault invpcid_single pti fsgsbase bmi1 avx2 smep bmi2 erms invpcid xsaveopt
bugs : cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass
bogomips : 4800.05
clflush size : 64
cache_alignment : 64
address sizes : 46 bits physical, 48 bits virtual
power management:
Memory: 4k page, physical 1011168k(322728k free), swap 0k(0k free)
vm_info: OpenJDK 64-Bit Server VM (24.181-b00) for linux-amd64 JRE (1.7.0_181-b00), built on Jun 5 2018 20:36:03 by "mockbuild" with gcc 4.8.5 20150623 (Red Hat 4.8.5-28)
time: Mon Aug 20 20:51:08 2018
elapsed time: 0 seconds
Orient 可以轻松 运行 512MB，但您的性能和吞吐量不会那么高。在OrientDB 3.0.x中可以使用环境变量ORIENTDB_OPTS_MEMORY来设置。在命令行我可以，例如 运行:
cd $ORIENTDB_HOME/bin
export ORIENTDB_OPTS_MEMORY="-Xmx512m"
./server.sh
（其中 $ORIENTDB_HOME 是您安装 OrientDB 的位置）我是 运行 512MB 内存。
顺便说一句，如果您查看 $ORIENTDB_HOME/bin/server.sh，您会发现甚至有代码可以检查服务器是否 运行ning 在 Raspberry Pi 上，范围从256MB 到 1GB，所以 t2.micro 运行 就好了。
我想 运行 在 EC2 微型（免费层）实例上使用 OrientDB。我找不到提供内存要求的 OrientDB 官方文档，但是我 found this question that says 512MB 应该没问题。我正在 运行 安装一个 EC2 微型实例，它有 1GB 内存。但是，当我尝试 运行 OrientDB 时，出现如下所示的 JRE 错误。我最初的想法是我需要使用 -xmx 来增加 jre 内存，但我想这将是 shell 脚本来执行此操作。有没有人在 EC2 微型实例中成功 运行 OrientDB 或运行陷入这个问题？
OpenJDK 64-Bit Server VM warning: INFO: os::commit_memory(0x00000007a04a0000, 1431699456, 0) failed; error='Cannot allocate memory' (errno=12)
There is insufficient memory for the Java Runtime Environment to continue.
Native memory allocation (malloc) failed to allocate 1431699456 bytes for committing reserved memory.
An error report file with more information is saved as:
/tmp/jvm-14728/hs_error.log
错误日志的内容如下：
OS:Linux
uname:Linux 4.14.47-56.37.amzn1.x86_64 #1 SMP Wed Jun 6 18:49:01 UTC 2018 x86_64
libc:glibc 2.17 NPTL 2.17
rlimit: STACK 8192k, CORE 0k, NPROC 3867, NOFILE 4096, AS infinity
load average:0.00 0.00 0.00
/proc/meminfo:
MemTotal: 1011168 kB
MemFree: 322852 kB
MemAvailable: 822144 kB
Buffers: 83188 kB
Cached: 523056 kB
SwapCached: 0 kB
Active: 254680 kB
Inactive: 369952 kB
Active(anon): 18404 kB
Inactive(anon): 48 kB
Active(file): 236276 kB
Inactive(file): 369904 kB
Unevictable: 0 kB
Mlocked: 0 kB
SwapTotal: 0 kB
SwapFree: 0 kB
Dirty: 36 kB
Writeback: 0 kB
AnonPages: 18376 kB
Mapped: 31660 kB
Shmem: 56 kB
Slab: 51040 kB
SReclaimable: 41600 kB
SUnreclaim: 9440 kB
KernelStack: 1564 kB
PageTables: 2592 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 505584 kB
Committed_AS: 834340 kB
VmallocTotal: 34359738367 kB
VmallocUsed: 0 kB
VmallocChunk: 0 kB
AnonHugePages: 0 kB
ShmemHugePages: 0 kB
ShmemPmdMapped: 0 kB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
HugePages_Surp: 0
Hugepagesize: 2048 kB
DirectMap4k: 49152 kB
DirectMap2M: 999424 kB
CPU:total 1 (initial active 1) (1 cores per cpu, 1 threads per core) family 6 model 63 stepping 2, cmov, cx8, fxsr, mmx, sse, sse2, sse3, ssse3, sse4.1, sse4.2, popcnt, avx, avx2, aes, erms, tsc
/proc/cpuinfo:
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 63
model name : Intel(R) Xeon(R) CPU E5-2676 v3 @ 2.40GHz
stepping : 2
microcode : 0x3c
cpu MHz : 2400.043
cache size : 30720 KB
physical id : 0
siblings : 1
core id : 0
cpu cores : 1
apicid : 0
initial apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx rdtscp lm constant_tsc rep_good nopl xtopology cpuid pni pclmulqdq ssse3 fma cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand hypervisor lahf_lm abm cpuid_fault invpcid_single pti fsgsbase bmi1 avx2 smep bmi2 erms invpcid xsaveopt
bugs : cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass
bogomips : 4800.05
clflush size : 64
cache_alignment : 64
address sizes : 46 bits physical, 48 bits virtual
power management:
Memory: 4k page, physical 1011168k(322728k free), swap 0k(0k free)
vm_info: OpenJDK 64-Bit Server VM (24.181-b00) for linux-amd64 JRE (1.7.0_181-b00), built on Jun 5 2018 20:36:03 by "mockbuild" with gcc 4.8.5 20150623 (Red Hat 4.8.5-28)
time: Mon Aug 20 20:51:08 2018
elapsed time: 0 seconds
Orient 可以轻松 运行 512MB，但您的性能和吞吐量不会那么高。在OrientDB 3.0.x中可以使用环境变量ORIENTDB_OPTS_MEMORY来设置。在命令行我可以，例如 运行:
cd $ORIENTDB_HOME/bin
export ORIENTDB_OPTS_MEMORY="-Xmx512m"
./server.sh
（其中 $ORIENTDB_HOME 是您安装 OrientDB 的位置）我是 运行 512MB 内存。
顺便说一句，如果您查看 $ORIENTDB_HOME/bin/server.sh，您会发现甚至有代码可以检查服务器是否 运行ning 在 Raspberry Pi 上，范围从256MB 到 1GB，所以 t2.micro 运行 就好了。