TragicServers，小而优的主机商，KVM VPS其实不错，OpenVZ的超售较多，不建议购买。
详情：TragicServers：$2.99/月/1GB内存/20GB SSD空间/1TB流量/KVM/洛杉矶
节点：Node kvm-e5la2
系统信息及带宽测试：
System Info
-----------
Processor : QEMU Virtual CPU version (cpu64-rhel6)
CPU Cores : 2
Frequency : 2400.084 MHz
Memory : 996 MB
Swap : 127 MB
Uptime : 18 min,
OS : CentOS release 6.8 (Final)
Arch : x86_64 (64 Bit)
Kernel : 2.6.32-504.23.4.el6.x86_64
Hostname : localhost.localdomain
Speedtest (IPv4 only)
---------------------
Your public IPv4 is 107.161.xxx.xxx
Location Provider Speed
CDN Cachefly 28.7MB/s
Atlanta, GA, US Coloat 1.95MB/s
Dallas, TX, US Softlayer 4.41MB/s
Seattle, WA, US Softlayer 5.42MB/s
San Jose, CA, US Softlayer 10.7MB/s
Washington, DC, US Softlayer 3.87MB/s
Tokyo, Japan Linode 2.27MB/s
Singapore Softlayer 2.18MB/s
Rotterdam, Netherlands id3.net 1.60MB/s
Haarlem, Netherlands Leaseweb 6.10MB/s
Disk Speed
----------
I/O (1st run) : 221 MB/s
I/O (2nd run) : 231 MB/s
I/O (3rd run) : 240 MB/s
Average I/O : 230.667 MB/s
硬盘 I/O 性能：
hdparm -t /dev/vda1
/dev/vda1:
Timing buffered disk reads: 716 MB in 3.01 seconds = 238.13 MB/sec
UnixBench跑分：
Benchmark Run: Wed Nov 30 2016 04:25:25 - 04:53:38
2 CPUs in system; running 1 parallel copy of tests
Dhrystone 2 using register variables 22885347.5 lps (10.0 s, 7 samples)
Double-Precision Whetstone 2869.3 MWIPS (9.9 s, 7 samples)
Execl Throughput 1438.3 lps (29.9 s, 2 samples)
File Copy 1024 bufsize 2000 maxblocks 414113.5 KBps (30.0 s, 2 samples)
File Copy 256 bufsize 500 maxblocks 116705.0 KBps (30.0 s, 2 samples)
File Copy 4096 bufsize 8000 maxblocks 1015928.5 KBps (30.0 s, 2 samples)
Pipe Throughput 1004428.3 lps (10.0 s, 7 samples)
Pipe-based Context Switching 170219.4 lps (10.0 s, 7 samples)
Process Creation 3345.0 lps (30.0 s, 2 samples)
Shell Scripts (1 concurrent) 3073.0 lpm (60.0 s, 2 samples)
Shell Scripts (8 concurrent) 706.3 lpm (60.1 s, 2 samples)
System Call Overhead 1553467.2 lps (10.0 s, 7 samples)
System Benchmarks Index Values BASELINE RESULT INDEX
Dhrystone 2 using register variables 116700.0 22885347.5 1961.0
Double-Precision Whetstone 55.0 2869.3 521.7
Execl Throughput 43.0 1438.3 334.5
File Copy 1024 bufsize 2000 maxblocks 3960.0 414113.5 1045.7
File Copy 256 bufsize 500 maxblocks 1655.0 116705.0 705.2
File Copy 4096 bufsize 8000 maxblocks 5800.0 1015928.5 1751.6
Pipe Throughput 12440.0 1004428.3 807.4
Pipe-based Context Switching 4000.0 170219.4 425.5
Process Creation 126.0 3345.0 265.5
Shell Scripts (1 concurrent) 42.4 3073.0 724.8
Shell Scripts (8 concurrent) 6.0 706.3 1177.2
System Call Overhead 15000.0 1553467.2 1035.6
========
System Benchmarks Index Score 757.4
------------------------------------------------------------------------
Benchmark Run: Wed Nov 30 2016 04:53:38 - 05:21:49
2 CPUs in system; running 2 parallel copies of tests
Dhrystone 2 using register variables 43515822.3 lps (10.0 s, 7 samples)
Double-Precision Whetstone 5737.8 MWIPS (10.0 s, 7 samples)
Execl Throughput 4308.1 lps (30.0 s, 2 samples)
File Copy 1024 bufsize 2000 maxblocks 551586.6 KBps (30.0 s, 2 samples)
File Copy 256 bufsize 500 maxblocks 166746.1 KBps (30.0 s, 2 samples)
File Copy 4096 bufsize 8000 maxblocks 1537485.6 KBps (30.0 s, 2 samples)
Pipe Throughput 1990248.7 lps (10.0 s, 7 samples)
Pipe-based Context Switching 331458.6 lps (10.0 s, 7 samples)
Process Creation 11676.2 lps (30.0 s, 2 samples)
Shell Scripts (1 concurrent) 6191.1 lpm (60.0 s, 2 samples)
Shell Scripts (8 concurrent) 820.5 lpm (60.1 s, 2 samples)
System Call Overhead 2660421.7 lps (10.0 s, 7 samples)
System Benchmarks Index Values BASELINE RESULT INDEX
Dhrystone 2 using register variables 116700.0 43515822.3 3728.9
Double-Precision Whetstone 55.0 5737.8 1043.2
Execl Throughput 43.0 4308.1 1001.9
File Copy 1024 bufsize 2000 maxblocks 3960.0 551586.6 1392.9
File Copy 256 bufsize 500 maxblocks 1655.0 166746.1 1007.5
File Copy 4096 bufsize 8000 maxblocks 5800.0 1537485.6 2650.8
Pipe Throughput 12440.0 1990248.7 1599.9
Pipe-based Context Switching 4000.0 331458.6 828.6
Process Creation 126.0 11676.2 926.7
Shell Scripts (1 concurrent) 42.4 6191.1 1460.2
Shell Scripts (8 concurrent) 6.0 820.5 1367.5
System Call Overhead 15000.0 2660421.7 1773.6
========
System Benchmarks Index Score 1412.5
国内ping：
路由追踪：
丢包测试：
Ping from 192.168.1.102 to 107.161.xxx.xxx
==============================================================================
11/30 17:20:10.841 Ping to 107.161.xxx.xxx with 32 bytes of data and 32 of TTL:
11/30 17:20:11.067 PingMin #1 Reply 32 bytes from 107.161.xxx.xxx: time=222ms TTL=51, ave=222.00ms
11/30 17:20:16.072 PingMax #6 Reply 32 bytes from 107.161.xxx.xxx: time=223ms TTL=51, ave=222.17ms
11/30 17:20:21.066 PingMin #11 Reply 32 bytes from 107.161.xxx.xxx: time=221ms TTL=51, ave=222.00ms
11/30 17:20:24.065 PingMax #14 Reply 32 bytes from 107.161.xxx.xxx: time=224ms TTL=51, ave=222.07ms
11/30 17:20:26.069 PingMax #16 Reply 32 bytes from 107.161.xxx.xxx: time=225ms TTL=51, ave=222.25ms
11/30 17:20:28.078 PingMax #18 Reply 32 bytes from 107.161.xxx.xxx: time=229ms TTL=51, ave=222.61ms
11/30 17:20:30.072 === 20 有效发送, 20 接收, 0.00% 丢失, 222.50ms 平均值 ===
--- 结果 & 统计信息 ------------------------------------------------------
开始时间: 2016/11/30 17:20:10
经过时间: 000:00:19
结束时间: 2016/11/30 17:20:30
----------------
20 总计发送
0 无效接收 (除了超时的其它错误)
----------------
20 有效发送
20 有效接收
0 timed out (0.00% 丢失)
Ping 最小值 221ms, 最大值 229ms, 平均值 222.50ms
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