详情：ChangeIP：$2.49/月/512MB内存/20GB SSD空间/不限流量/KVM/洛杉矶/DDOS防护
网络不错，系统I/O，换了节点后，很不错。换后的节点在 LA VPS Node 3。
从现在的测试看，系统I/O高、不限流量，性能不错，而且空间大，5折优惠后，性价比很高！建议年付！因为优惠码会失效，特别是这种永久性5折优惠，一般都是一次性优惠。
1、系统信息、带宽、I/O测试
CPU model : QEMU Virtual CPU version (cpu64-rhel6)
Number of cores : 1
CPU frequency : 2599.998 MHz
Total size of Disk : 30.0 GB (0.8 GB Used)
Total amount of Mem : 996 MB (172 MB Used)
Total amount of Swap : 511 MB (0 MB Used)
System uptime : 0 days, 0 hour 10 min
Load average : 0.67, 0.52, 0.20
OS : CentOS 6.5
Arch : x86_64 (64 Bit)
Kernel : 2.6.32-431.1.2.0.1.el6.x86_64
----------------------------------------------------------------------
I/O speed(1st run) : 47.5 MB/s
I/O speed(2nd run) : 87.9 MB/s
I/O speed(3rd run) : 62.5 MB/s
Average I/O speed : 66.0 MB/s
----------------------------------------------------------------------
Node Name IPv4 address Download Speed
CacheFly 205.234.175.175 7.35MB/s
Linode, Tokyo, JP 106.187.96.148 2.83MB/s
Linode, Singapore, SG 139.162.23.4 2.60MB/s
Linode, London, UK 176.58.107.39 2.08MB/s
Linode, Frankfurt, DE 139.162.130.8 3.27MB/s
Linode, Fremont, CA 50.116.14.9 6.47MB/s
Softlayer, Dallas, TX 173.192.68.18 4.07MB/s
Softlayer, Seattle, WA 67.228.112.250 5.31MB/s
Softlayer, Frankfurt, DE 159.122.69.4 2.44MB/s
Softlayer, Singapore, SG 119.81.28.170 2.67MB/s
Softlayer, HongKong, CN 119.81.130.170 1.78MB/s
换节点后的测试：
CPU model : QEMU Virtual CPU version (cpu64-rhel6)
Number of cores : 1
CPU frequency : 2899.998 MHz
Total size of Disk : 30.0 GB (2.8 GB Used)
Total amount of Mem : 996 MB (211 MB Used)
Total amount of Swap : 511 MB (0 MB Used)
System uptime : 1 days, 5 hour 8 min
Load average : 0.04, 0.03, 0.05
OS : CentOS 6.9
Arch : x86_64 (64 Bit)
Kernel : 2.6.32-642.el6.x86_64
----------------------------------------------------------------------
I/O speed(1st run) : 647 MB/s
I/O speed(2nd run) : 712 MB/s
I/O speed(3rd run) : 872 MB/s
Average I/O speed : 743.7 MB/s
----------------------------------------------------------------------
Node Name IPv4 address Download Speed
CacheFly 205.234.175.175 12.9MB/s
Linode, Tokyo, JP 106.187.96.148 11.5MB/s
Linode, Singapore, SG 139.162.23.4 8.49MB/s
Linode, London, UK 176.58.107.39 8.20MB/s
Linode, Frankfurt, DE 139.162.130.8 8.05MB/s
Linode, Fremont, CA 50.116.14.9 10.2MB/s
Softlayer, Dallas, TX 173.192.68.18 12.8MB/s
Softlayer, Seattle, WA 67.228.112.250 12.8MB/s
Softlayer, Frankfurt, DE 159.122.69.4 4.76MB/s
Softlayer, Singapore, SG 119.81.28.170 6.43MB/s
Softlayer, HongKong, CN 119.81.130.170 5.80MB/s
2、上传/下载带宽测试
Retrieving speedtest.net server list...
Selecting best server based on ping...
Hosted by Speedtest.net (Los Angeles, CA) [2.74 km]: 6.518 ms
Testing download speed................................................................................
Download: 51.03 Mbit/s
Testing upload speed................................................................................................
Upload: 35.67 Mbit/s
换节点后的测试：
Retrieving speedtest.net server list...
Selecting best server based on ping...
Hosted by Atlantic Metro (Los Angeles, CA) [2.74 km]: 1.66 ms
Testing download speed................................................................................
Download: 108.79 Mbit/s
Testing upload speed................................................................................................
Upload: 35.44 Mbit/s
3、国内访问速度
4、硬盘 I/O 性能测试
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, 164.636 s, 1.6 MB/s
换节点后的测试：
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, 2.89743 s, 92.6 MB/s
5、UnixBench跑分
Benchmark Run: Tue Aug 15 2017 09:24:28 - 09:52:50
1 CPU in system; running 1 parallel copy of tests
Dhrystone 2 using register variables 23779977.1 lps (10.0 s, 7 samples)
Double-Precision Whetstone 2899.2 MWIPS (10.1 s, 7 samples)
Execl Throughput 2990.7 lps (29.6 s, 2 samples)
File Copy 1024 bufsize 2000 maxblocks 566098.0 KBps (30.1 s, 2 samples)
File Copy 256 bufsize 500 maxblocks 170200.3 KBps (30.0 s, 2 samples)
File Copy 4096 bufsize 8000 maxblocks 1408704.9 KBps (30.0 s, 2 samples)
Pipe Throughput 1186396.7 lps (10.0 s, 7 samples)
Pipe-based Context Switching 241598.4 lps (10.0 s, 7 samples)
Process Creation 10690.2 lps (30.0 s, 2 samples)
Shell Scripts (1 concurrent) 3753.9 lpm (60.0 s, 2 samples)
Shell Scripts (8 concurrent) 491.6 lpm (60.1 s, 2 samples)
System Call Overhead 1807537.2 lps (10.0 s, 7 samples)
System Benchmarks Index Values BASELINE RESULT INDEX
Dhrystone 2 using register variables 116700.0 23779977.1 2037.7
Double-Precision Whetstone 55.0 2899.2 527.1
Execl Throughput 43.0 2990.7 695.5
File Copy 1024 bufsize 2000 maxblocks 3960.0 566098.0 1429.5
File Copy 256 bufsize 500 maxblocks 1655.0 170200.3 1028.4
File Copy 4096 bufsize 8000 maxblocks 5800.0 1408704.9 2428.8
Pipe Throughput 12440.0 1186396.7 953.7
Pipe-based Context Switching 4000.0 241598.4 604.0
Process Creation 126.0 10690.2 848.4
Shell Scripts (1 concurrent) 42.4 3753.9 885.3
Shell Scripts (8 concurrent) 6.0 491.6 819.4
System Call Overhead 15000.0 1807537.2 1205.0
========
System Benchmarks Index Score 1011.0
换节点后的测试：
Benchmark Run: Sun Sep 03 2017 01:33:12 - 02:01:21
1 CPU in system; running 1 parallel copy of tests
Dhrystone 2 using register variables 32304268.6 lps (10.0 s, 7 samples)
Double-Precision Whetstone 4030.0 MWIPS (9.5 s, 7 samples)
Execl Throughput 3927.8 lps (30.0 s, 2 samples)
File Copy 1024 bufsize 2000 maxblocks 972140.8 KBps (30.0 s, 2 samples)
File Copy 256 bufsize 500 maxblocks 274319.5 KBps (30.0 s, 2 samples)
File Copy 4096 bufsize 8000 maxblocks 2342694.4 KBps (30.0 s, 2 samples)
Pipe Throughput 1637572.7 lps (10.0 s, 7 samples)
Pipe-based Context Switching 332839.6 lps (10.0 s, 7 samples)
Process Creation 13926.3 lps (30.0 s, 2 samples)
Shell Scripts (1 concurrent) 5570.1 lpm (60.0 s, 2 samples)
Shell Scripts (8 concurrent) 717.0 lpm (60.0 s, 2 samples)
System Call Overhead 2404514.2 lps (10.0 s, 7 samples)
System Benchmarks Index Values BASELINE RESULT INDEX
Dhrystone 2 using register variables 116700.0 32304268.6 2768.1
Double-Precision Whetstone 55.0 4030.0 732.7
Execl Throughput 43.0 3927.8 913.4
File Copy 1024 bufsize 2000 maxblocks 3960.0 972140.8 2454.9
File Copy 256 bufsize 500 maxblocks 1655.0 274319.5 1657.5
File Copy 4096 bufsize 8000 maxblocks 5800.0 2342694.4 4039.1
Pipe Throughput 12440.0 1637572.7 1316.4
Pipe-based Context Switching 4000.0 332839.6 832.1
Process Creation 126.0 13926.3 1105.3
Shell Scripts (1 concurrent) 42.4 5570.1 1313.7
Shell Scripts (8 concurrent) 6.0 717.0 1195.0
System Call Overhead 15000.0 2404514.2 1603.0
========
System Benchmarks Index Score 1458.7
6、丢包测试
Ping from 192.168.1.29 to 67.21.81.201
==============================================================================
08/15 21:16:07.404 Ping to 67.21.81.201 with 32 bytes of data and 32 of TTL:
08/15 21:16:07.684 PingMin #1 Reply 32 bytes from 67.21.81.201: time=210ms TTL=49, ave=210.00ms
08/15 21:16:08.620 PingMin #2 Reply 32 bytes from 67.21.81.201: time=208ms TTL=49, ave=209.00ms
08/15 21:16:09.620 PingMax #3 Reply 32 bytes from 67.21.81.201: time=212ms TTL=49, ave=210.00ms
08/15 21:16:12.621 PingMax #6 Reply 32 bytes from 67.21.81.201: time=213ms TTL=49, ave=209.83ms
08/15 21:16:17.619 PingMin #11 Reply 32 bytes from 67.21.81.201: time=207ms TTL=49, ave=209.00ms
08/15 21:16:22.648 PingMax #16 Reply 32 bytes from 67.21.81.201: time=234ms TTL=49, ave=210.38ms
08/15 21:16:26.621 === 20 有效发送, 20 接收, 0.00% 丢失, 210.10ms 平均值 ===
--- 结果 & 统计信息 ------------------------------------------------------
开始时间: 2017/08/15 21:16:07
经过时间: 000:00:19
结束时间: 2017/08/15 21:16:26
----------------
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 207ms, 最大值 234ms, 平均值 210.10ms
7、路由追踪
电信
联通
移动
支持系统较少：
Youtube测速：
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