Vultr.com最近几个月还是比较火的，在各个主机论坛和测评博客里都有这家。虽然宣传的有12处数据中心，但实际上并不是所有的数据中心都有货。比如今天就是 Frankfurt, DE 和 London, UK 没货。
这家有个好处就是，可以自定义ISO文件来安装系统（这里的潜台词是，又可以折腾 Windows 2003 了），安装过程全程通过 VNC 可以看到（坑爹的 CentOS 默认模板总是安装失败，让我足足折腾了 3 次，最后不得已换成自定义 ISO 才安装成功）。当然，其计费方式也基本上和 DigitalOcean 一致，按照小时计费，比较灵活。
这里以一款日本东京的最低套餐来简单测评一下（为什么选日本东京？因为离中国物理距离近，至少白天速度还是很快的）。
配置如下：
Guaranteed RAM：768MB
Swap：1503MB（自定义安装CentOS后自动生成的）
Disk Storage：15GB SSD
Monthly Transfer：100GB（此处略坑，日本东京的流量只有普通的十分之一）
CPU Cores：1
IPv4 addresses：1
Server Connection Speed：1Gbps
Location：Tokyo, Japan
Price:$5/month
评论：这个配置的性价比不错，至少要比 DigitalOcean 的同等价位配置要高。而且DigitalOcean 默认是没有 Swap，还要手动来创建。Linode 是最低 2G 内存，$20/月起步，折算一下，还是 Vultr.com 性价比高。
1、CPU信息
[root@v1 ~]# cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 60 model name : Vultr Virtual CPU 2 stepping : 1 cpu MHz : 3392.144 cache size : 4096 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 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 up rep_good unfair_spinlock pni pclmulqdq ssse3 fma cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx hypervisor lahf_lm xsaveopt fsgsbase bmi1 hle avx2 smep bmi2 erms invpcid rtm bogomips : 6784.28 clflush size : 64 cache_alignment : 64 address sizes : 40 bits physical, 48 bits virtual power management:
2、内存信息
[root@v1 ~]# cat /proc/meminfo MemTotal: 760304 kB MemFree: 242420 kB Buffers: 19348 kB Cached: 201852 kB SwapCached: 0 kB Active: 295372 kB Inactive: 165204 kB Active(anon): 124584 kB Inactive(anon): 124532 kB Active(file): 170788 kB Inactive(file): 40672 kB Unevictable: 0 kB Mlocked: 0 kB SwapTotal: 1540088 kB SwapFree: 1540088 kB Dirty: 28 kB Writeback: 0 kB AnonPages: 239444 kB Mapped: 28984 kB Shmem: 9740 kB Slab: 35352 kB SReclaimable: 14692 kB SUnreclaim: 20660 kB KernelStack: 864 kB PageTables: 7536 kB NFS_Unstable: 0 kB Bounce: 0 kB WritebackTmp: 0 kB CommitLimit: 1920240 kB Committed_AS: 907380 kB VmallocTotal: 34359738367 kB VmallocUsed: 7448 kB VmallocChunk: 34359726920 kB HardwareCorrupted: 0 kB AnonHugePages: 153600 kB HugePages_Total: 0 HugePages_Free: 0 HugePages_Rsvd: 0 HugePages_Surp: 0 Hugepagesize: 2048 kB DirectMap4k: 8184 kB DirectMap2M: 778240 kB
[root@v1 ~]# free -m
total used free shared buffers cached
Mem: 742 518 224 0 19 189
-/+ buffers/cache: 309 433
Swap: 1503 0 1503
3、硬盘信息
[root@v1 ~]# df -hal
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/vg_v1-lv_root
13G 3.0G 9.3G 25% /
proc 0 0 0 - /proc
sysfs 0 0 0 - /sys
devpts 0 0 0 - /dev/pts
tmpfs 372M 0 372M 0% /dev/shm
/dev/vda1 485M 54M 407M 12% /boot
none 0 0 0 - /proc/sys/fs/binfmt_misc
4、I/O性能
[root@v1 ~]# dd if=/dev/zero of=test bs=64k count=16k conv=fdatasync 16384+0 records in 16384+0 records out 1073741824 bytes (1.1 GB) copied, 2.40416 s, 447 MB/s
5、网络性能
[root@v1 ~]# wget freevps.us/downloads/bench.sh [root@v1 ~]# chmod +x bench.sh [root@v1 ~]# ./bench.sh CPU model : Vultr Virtual CPU 2 Number of cores : 1 CPU frequency : 3392.144 MHz Total amount of ram : 742 MB Total amount of swap : 1503 MB System uptime : 13:46, Download speed from CacheFly: 98.8MB/s Download speed from Coloat, Atlanta GA: 6.63MB/s Download speed from Softlayer, Dallas, TX: 10.5MB/s Download speed from Linode, Tokyo, JP: 52.9MB/s Download speed from i3d.net, Rotterdam, NL: 3.97MB/s Download speed from Leaseweb, Haarlem, NL: 10.1MB/s Download speed from Softlayer, Singapore: 15.7MB/s Download speed from Softlayer, Seattle, WA: 12.8MB/s Download speed from Softlayer, San Jose, CA: 14.1MB/s Download speed from Softlayer, Washington, DC: 8.95MB/s I/O speed : 461 MB/s
6、UnixBench性能测试
[root@v1 ~]# wget https://qiushuiyibing.com/wp-content/uploads/unixbench.sh
[root@v1 ~]# chmod +x unixbench.sh
[root@v1 ~]# ./unixbench.sh
========================================================================
BYTE UNIX Benchmarks (Version 5.1.3)
System: v1.teddyvpn.com: GNU/Linux
OS: GNU/Linux -- 2.6.32-431.11.2.el6.x86_64 -- #1 SMP Tue Mar 25 19:59:55 UTC 2014
Machine: x86_64 (x86_64)
Language: en_US.utf8 (charmap="UTF-8", collate="UTF-8")
CPU 0: Vultr Virtual CPU 2 (6784.3 bogomips)
Hyper-Threading, x86-64, MMX, Physical Address Ext, SYSENTER/SYSEXIT, SYSCALL/SYSRET
14:12:33 up 17:50, 1 user, load average: 0.03, 0.01, 0.00; runlevel 3
------------------------------------------------------------------------
Benchmark Run: Fri Apr 25 2014 14:12:33 - 14:40:44
1 CPU in system; running 1 parallel copy of tests
Dhrystone 2 using register variables 44737029.7 lps (10.0 s, 7 samples)
Double-Precision Whetstone 4340.8 MWIPS (10.9 s, 7 samples)
Execl Throughput 7923.3 lps (30.0 s, 2 samples)
File Copy 1024 bufsize 2000 maxblocks 1338595.8 KBps (30.0 s, 2 samples)
File Copy 256 bufsize 500 maxblocks 350938.9 KBps (30.0 s, 2 samples)
File Copy 4096 bufsize 8000 maxblocks 3479564.3 KBps (30.0 s, 2 samples)
Pipe Throughput 2625825.3 lps (10.0 s, 7 samples)
Pipe-based Context Switching 520782.1 lps (10.0 s, 7 samples)
Process Creation 27131.5 lps (30.0 s, 2 samples)
Shell Scripts (1 concurrent) 8877.8 lpm (60.0 s, 2 samples)
Shell Scripts (8 concurrent) 1198.0 lpm (60.0 s, 2 samples)
System Call Overhead 3684441.9 lps (10.0 s, 7 samples)
System Benchmarks Index Values BASELINE RESULT INDEX
Dhrystone 2 using register variables 116700.0 44737029.7 3833.5
Double-Precision Whetstone 55.0 4340.8 789.2
Execl Throughput 43.0 7923.3 1842.6
File Copy 1024 bufsize 2000 maxblocks 3960.0 1338595.8 3380.3
File Copy 256 bufsize 500 maxblocks 1655.0 350938.9 2120.5
File Copy 4096 bufsize 8000 maxblocks 5800.0 3479564.3 5999.2
Pipe Throughput 12440.0 2625825.3 2110.8
Pipe-based Context Switching 4000.0 520782.1 1302.0
Process Creation 126.0 27131.5 2153.3
Shell Scripts (1 concurrent) 42.4 8877.8 2093.8
Shell Scripts (8 concurrent) 6.0 1198.0 1996.6
System Call Overhead 15000.0 3684441.9 2456.3
========
System Benchmarks Index Score 2223.0
7、chinaz的ping数据
8、探针截图
写在最后：
Vultr.com 是 DigitalOcean 的有力竞争者，随着云技术以及硬件的发展，以后的 VPS 性价比只会越来越高。从测试数据来看，Vultr.com无论是从跑分，还是实际编译 LAMP 环境（全程只花了 21 分钟），性能都是优秀的。
这次选择的日本东京数据中心，无论是连接国内还是国外，速度也都是不错的。实际测试下来，服务器确实是G口。100G/月的流量，对于流量大户来说确实有点捉襟见肘。所以，还是略有遗憾。不过对于我来说，这流量是绰绰有余了。
对了，目前这家还在搞活动，客户第一次充值，是充多少送多少，上限为$100。
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