详情：ChicagoVPS：$3.5/月/1GB内存/35GB空间/1TB流量/KVM/洛杉矶
系统信息及带宽测试：
System Info
-----------
Processor : QEMU Virtual CPU version (cpu64-rhel6)
CPU Cores : 4
Frequency : 1999.999 MHz
Memory : 996 MB
Swap : 1023 MB
Uptime : 1:37,
OS : CentOS release 6.4 (Final)
Arch : x86_64 (64 Bit)
Kernel : 2.6.32-358.el6.x86_64
Hostname : zhujiwiki
Speedtest (IPv4 only)
---------------------
Your public IPv4 is 107.172.xxx.xxx
Location Provider Speed
CDN Cachefly 37.7MB/s
Atlanta, GA, US Coloat 22.7MB/s
Dallas, TX, US Softlayer 31.2MB/s
Seattle, WA, US Softlayer 31.2MB/s
San Jose, CA, US Softlayer 43.0MB/s
Washington, DC, US Softlayer 5.06MB/s
Tokyo, Japan Linode 8.64MB/s
Singapore Softlayer 7.18MB/s
Rotterdam, Netherlands id3.net 7.90MB/s
Haarlem, Netherlands Leaseweb 19.5MB/s
Disk Speed
----------
I/O (1st run) : 93.5 MB/s
I/O (2nd run) : 141 MB/s
I/O (3rd run) : 75.1 MB/s
Average I/O : 103.2 MB/s
服务器 I/O 性能：
dd if=/dev/zero of=test bs=64k count=4k oflag=dsync
4096+0 records in
4096+0 records out
268435456 bytes (268 MB) copied, 159.832 s, 1.7 MB/s
UnixBench跑分：
Benchmark Run: Thu Nov 03 2016 09:50:38 - 10:18:40
4 CPUs in system; running 1 parallel copy of tests
Dhrystone 2 using register variables 19790152.6 lps (10.0 s, 7 samples)
Double-Precision Whetstone 2243.9 MWIPS (9.9 s, 7 samples)
Execl Throughput 755.4 lps (29.9 s, 2 samples)
File Copy 1024 bufsize 2000 maxblocks 365031.9 KBps (30.0 s, 2 samples)
File Copy 256 bufsize 500 maxblocks 100210.8 KBps (30.0 s, 2 samples)
File Copy 4096 bufsize 8000 maxblocks 894063.2 KBps (30.0 s, 2 samples)
Pipe Throughput 842027.4 lps (10.0 s, 7 samples)
Pipe-based Context Switching 133787.5 lps (10.0 s, 7 samples)
Process Creation 1853.5 lps (30.0 s, 2 samples)
Shell Scripts (1 concurrent) 2043.8 lpm (60.0 s, 2 samples)
Shell Scripts (8 concurrent) 987.2 lpm (60.0 s, 2 samples)
System Call Overhead 1404819.5 lps (10.0 s, 7 samples)
System Benchmarks Index Values BASELINE RESULT INDEX
Dhrystone 2 using register variables 116700.0 19790152.6 1695.8
Double-Precision Whetstone 55.0 2243.9 408.0
Execl Throughput 43.0 755.4 175.7
File Copy 1024 bufsize 2000 maxblocks 3960.0 365031.9 921.8
File Copy 256 bufsize 500 maxblocks 1655.0 100210.8 605.5
File Copy 4096 bufsize 8000 maxblocks 5800.0 894063.2 1541.5
Pipe Throughput 12440.0 842027.4 676.9
Pipe-based Context Switching 4000.0 133787.5 334.5
Process Creation 126.0 1853.5 147.1
Shell Scripts (1 concurrent) 42.4 2043.8 482.0
Shell Scripts (8 concurrent) 6.0 987.2 1645.4
System Call Overhead 15000.0 1404819.5 936.5
========
System Benchmarks Index Score 608.7
------------------------------------------------------------------------
Benchmark Run: Thu Nov 03 2016 10:18:40 - 10:46:39
4 CPUs in system; running 4 parallel copies of tests
Dhrystone 2 using register variables 77957512.8 lps (10.0 s, 7 samples)
Double-Precision Whetstone 8971.6 MWIPS (9.9 s, 7 samples)
Execl Throughput 6888.7 lps (29.7 s, 2 samples)
File Copy 1024 bufsize 2000 maxblocks 232645.3 KBps (30.0 s, 2 samples)
File Copy 256 bufsize 500 maxblocks 61413.6 KBps (30.0 s, 2 samples)
File Copy 4096 bufsize 8000 maxblocks 731078.8 KBps (30.0 s, 2 samples)
Pipe Throughput 3291548.4 lps (10.0 s, 7 samples)
Pipe-based Context Switching 529105.8 lps (10.0 s, 7 samples)
Process Creation 19600.4 lps (30.0 s, 2 samples)
Shell Scripts (1 concurrent) 9363.5 lpm (60.0 s, 2 samples)
Shell Scripts (8 concurrent) 1267.0 lpm (60.1 s, 2 samples)
System Call Overhead 3192902.1 lps (10.0 s, 7 samples)
System Benchmarks Index Values BASELINE RESULT INDEX
Dhrystone 2 using register variables 116700.0 77957512.8 6680.2
Double-Precision Whetstone 55.0 8971.6 1631.2
Execl Throughput 43.0 6888.7 1602.0
File Copy 1024 bufsize 2000 maxblocks 3960.0 232645.3 587.5
File Copy 256 bufsize 500 maxblocks 1655.0 61413.6 371.1
File Copy 4096 bufsize 8000 maxblocks 5800.0 731078.8 1260.5
Pipe Throughput 12440.0 3291548.4 2645.9
Pipe-based Context Switching 4000.0 529105.8 1322.8
Process Creation 126.0 19600.4 1555.6
Shell Scripts (1 concurrent) 42.4 9363.5 2208.4
Shell Scripts (8 concurrent) 6.0 1267.0 2111.6
System Call Overhead 15000.0 3192902.1 2128.6
========
System Benchmarks Index Score 1589.1
国内ping：
丢包测试： 晚上9点半，未安装锐速
Ping from 192.168.1.102 to 107.172.xxx.xxx
==============================================================================
11/03 21:31:47.553 Ping to 107.172.xxx.xxx with 32 bytes of data and 32 of TTL:
11/03 21:31:48.188 超时 #1 *****(32 bytes) 请求超时。
11/03 21:31:49.188 超时 #2 *****(32 bytes) 请求超时。
11/03 21:31:50.029 PingMin #3 Reply 32 bytes from 107.172.xxx.xxx: time=475ms TTL=52, ave=475.00ms
11/03 21:31:50.973 PingMin #4 Reply 32 bytes from 107.172.xxx.xxx: time=422ms TTL=52, ave=448.50ms
11/03 21:31:52.056 PingMax #5 Reply 32 bytes from 107.172.xxx.xxx: time=505ms TTL=52, ave=467.33ms
11/03 21:31:55.188 超时 #8 *****(32 bytes) 请求超时。
11/03 21:31:57.968 PingMin #11 Reply 32 bytes from 107.172.xxx.xxx: time=417ms TTL=52, ave=456.88ms
11/03 21:32:07.016 === 20 有效发送, 17 接收, 15.00% 丢失, 455.00ms 平均值 ===
--- 结果 & 统计信息 ------------------------------------------------------
开始时间: 2016/11/03 21:31:47
经过时间: 000:00:19
结束时间: 2016/11/03 21:32:07
----------------
20 总计发送
0 无效接收 (除了超时的其它错误)
----------------
20 有效发送
17 有效接收
3 timed out (15.00% 丢失)
Ping 最小值 417ms, 最大值 505ms, 平均值 455.00ms
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