DMIT 发布了圣诞促销新Offer，洛杉矶sPro套餐开售。该套餐去程会走Cloudflare Magic Transit，回程走GIA CN2，既能提供高速低延迟，也同时带来CF的高防服务（5T防御）。sPro套餐默认配置为2核，2G内存，20G SSD硬盘，1T流量@100M带宽。使用优惠码后，月付$11.92美元。
本人觉得该套餐性价比不错，因此购买了一款，本文是对该产品的简评。
DMIT圣诞新品sPro套餐测评
首先是基本信息：
---------------------------------------------------------------------- CPU Model : AMD EPYC 7402P 24-Core Processor CPU Cores : 2 CPU Frequency : 2794.704 MHz CPU Cache : 512 KB Total Disk : 20.0 GB (2.0 GB Used) Total Mem : 1997 MB (65 MB Used) Total Swap : 0 MB (0 MB Used) System uptime : 0 days, 0 hour 8 min Load average : 0.00, 0.11, 0.08 OS : CentOS 7.9.2009 Arch : x86_64 (64 Bit) Kernel : 4.9.215-36.el7.x86_64 TCP CC : bbr Virtualization : KVM Organization : AS54574 DMIT Cloud Services Location : Los Angeles / US Region : California ---------------------------------------------------------------------- I/O Speed(1st run) : 860 MB/s I/O Speed(2nd run) : 882 MB/s I/O Speed(3rd run) : 817 MB/s Average I/O speed : 853.0 MB/s ---------------------------------------------------------------------- Node Name Upload Speed Download Speed Latency Speedtest.net 100.86 Mbps 101.37 Mbps 157.10 ms Beijing CU 4.79 Mbps 97.86 Mbps 338.83 ms Shanghai CT 102.06 Mbps 103.53 Mbps 127.52 ms Shanghai CU 58.08 Mbps 103.96 Mbps 245.13 ms Guangzhou CT 35.93 Mbps 86.35 Mbps 170.05 ms Guangzhou CU 1.20 Mbps 92.29 Mbps 349.77 ms Shenzhen CU 19.49 Mbps 101.12 Mbps 237.88 ms Hongkong CN 104.31 Mbps 100.30 Mbps 165.94 ms Singapore SG 101.78 Mbps 105.22 Mbps 173.36 ms Tokyo JP 104.98 Mbps 8.46 Mbps 115.86 ms ----------------------------------------------------------------------
套餐使用AMD的CPU，可能是现在邻居较少，硬盘IO很不错。下载和上行数据来看，移动电信都不错，联通比较拉胯。
接着看全国ping数据，全国平均延迟174ms，比他家其他GIA产品要低点。需要注意的是ipip.net的ip库未更新，ip会被定位到香港。
再来看回程路由：
北京电信 traceroute to 220.181.22.1 (220.181.22.1), 30 hops max, 60 byte packets 1 premium-routing.irb.100.gw0.lax.DMIT.io (154.17.0.1) 11.74 ms AS174,AS54574 United States California Los Angeles cogentco.com 2 premium-routing.ae10.1000.re0.lax.DMIT.io (193.41.248.225) 0.45 ms AS54574 United States California Los Angeles dmit.io 3 china-telecom-gia.re0.lax.DMIT.io (193.41.248.130) 0.94 ms AS54574 United States California Los Angeles dmit.io 4 59.43.189.37 126.55 ms * China Shanghai ChinaTelecom 5 59.43.247.141 155.17 ms * China Beijing ChinaTelecom 6 59.43.188.73 148.74 ms * China Beijing ChinaTelecom 7 59.43.131.253 150.03 ms * China Beijing ChinaTelecom 8 bj141-152-146.bjtelecom.net (219.141.152.146) 152.57 ms AS4847 China Beijing ChinaTelecom 9 * 10 * 11 220.181.22.1 179.62 ms AS23724 China Beijing ChinaTelecom ---------------------------------------------------------------------- 北京移动 traceroute to 221.130.33.1 (221.130.33.1), 30 hops max, 60 byte packets 1 premium-routing.irb.100.gw0.lax.DMIT.io (154.17.0.1) 13.81 ms AS174,AS54574 United States California Los Angeles cogentco.com 2 premium-routing.ae10.1000.re0.lax.DMIT.io (193.41.248.225) 2.65 ms AS54574 United States California Los Angeles dmit.io 3 china-telecom-gia.re0.lax.DMIT.io (193.41.248.130) 0.72 ms AS54574 United States California Los Angeles dmit.io 4 59.43.181.145 125.94 ms * China Shanghai ChinaTelecom 5 * 6 * 7 59.43.80.102 128.99 ms * China Shanghai ChinaTelecom 8 * 9 * 10 221.183.30.49 206.24 ms AS9808 China Beijing ChinaMobile 11 221.183.9.197 169.65 ms AS9808 China Beijing ChinaMobile 12 111.24.2.97 170.17 ms AS9808 China Beijing ChinaMobile 13 111.24.14.46 169.34 ms AS9808 China Beijing ChinaMobile 14 * 15 211.136.66.129 167.84 ms AS56048 China Beijing ChinaMobile 16 221.179.159.238 171.30 ms AS56048 China Beijing ChinaMobile 17 221.130.33.1 168.46 ms AS56048 China Beijing ChinaMobile ---------------------------------------------------------------------- 宁波联通 traceroute to 60.12.17.1 (60.12.17.1), 30 hops max, 60 byte packets 1 premium-routing.irb.100.gw0.lax.DMIT.io (154.17.0.1) 82.93 ms AS174,AS54574 United States California Los Angeles cogentco.com 2 premium-routing.ae10.1000.re0.lax.DMIT.io (193.41.248.225) 0.32 ms AS54574 United States California Los Angeles dmit.io 3 china-telecom-gia.re0.lax.DMIT.io (193.41.248.130) 0.92 ms AS54574 United States California Los Angeles dmit.io 4 59.43.184.153 126.01 ms * China Shanghai ChinaTelecom 5 * 6 59.43.138.49 134.04 ms * China Shanghai ChinaTelecom 7 * 8 219.158.113.197 160.40 ms AS4837 China Shanghai ChinaUnicom 9 219.158.106.94 168.68 ms AS4837 China Zhejiang Hangzhou ChinaUnicom 10 221.12.35.126 161.55 ms AS4837 China Zhejiang Ningbo ChinaUnicom 11 * 12 60.12.17.1 161.01 ms AS4837 China Zhejiang Ningbo ChinaUnicom ---------------------------------------------------------------------- 杭州移动 traceroute to 211.140.0.2 (211.140.0.2), 30 hops max, 60 byte packets 1 premium-routing.irb.100.gw0.lax.DMIT.io (154.17.0.1) 18.51 ms AS174,AS54574 United States California Los Angeles cogentco.com 2 premium-routing.ae10.1000.re0.lax.DMIT.io (193.41.248.225) 0.34 ms AS54574 United States California Los Angeles dmit.io 3 china-telecom-gia.re0.lax.DMIT.io (193.41.248.130) 1.01 ms AS54574 United States California Los Angeles dmit.io 4 59.43.189.37 126.64 ms * China Shanghai ChinaTelecom 5 59.43.187.65 135.08 ms * China Shanghai ChinaTelecom 6 59.43.138.49 134.32 ms * China Shanghai ChinaTelecom 7 59.43.80.138 131.50 ms * China Shanghai ChinaTelecom 8 202.97.68.138 132.48 ms AS13030 China Zhejiang Hangzhou ChinaTelecom 9 * 10 221.183.54.37 199.87 ms AS9808 China Zhejiang Hangzhou ChinaMobile 11 221.183.25.145 173.14 ms AS9808 China Zhejiang Hangzhou ChinaMobile 12 211.140.0.2 174.07 ms AS56041 China Zhejiang Hangzhou ChinaMobile ---------------------------------------------------------------------- 广州电信 traceroute to 14.215.116.1 (14.215.116.1), 30 hops max, 60 byte packets 1 premium-routing.irb.100.gw0.lax.DMIT.io (154.17.0.1) 17.33 ms AS174,AS54574 United States California Los Angeles cogentco.com 2 premium-routing.ae10.1000.re0.lax.DMIT.io (193.41.248.225) 0.32 ms AS54574 United States California Los Angeles dmit.io 3 china-telecom-gia.re0.lax.DMIT.io (193.41.248.130) 0.78 ms AS54574 United States California Los Angeles dmit.io 4 59.43.182.106 160.07 ms * China Guangdong Guangzhou ChinaTelecom 5 * 6 59.43.130.121 162.70 ms * China Guangdong Guangzhou ChinaTelecom 7 202.97.82.38 162.82 ms AS4134 China Guangdong Guangzhou ChinaTelecom 8 113.108.208.26 162.78 ms AS58466 China Guangdong Guangzhou ChinaTelecom 9 183.2.167.229 163.51 ms AS58466 China Guangdong Guangzhou ChinaTelecom 10 183.56.128.10 157.88 ms AS58466 China Guangdong Guangzhou ChinaTelecom 11 14.215.116.1 162.80 ms AS58466 China Guangdong Guangzhou ChinaTelecom ---------------------------------------------------------------------- 深圳联通 traceroute to 58.250.0.1 (58.250.0.1), 30 hops max, 60 byte packets 1 premium-routing.irb.100.gw0.lax.DMIT.io (154.17.0.1) 12.97 ms AS174,AS54574 United States California Los Angeles cogentco.com 2 premium-routing.ae10.1000.re0.lax.DMIT.io (193.41.248.225) 0.33 ms AS54574 United States California Los Angeles dmit.io 3 china-telecom-gia.re0.lax.DMIT.io (193.41.248.130) 0.78 ms AS54574 United States California Los Angeles dmit.io 4 59.43.182.106 160.04 ms * China Guangdong Guangzhou ChinaTelecom 5 * 6 59.43.130.149 165.51 ms * China Guangdong Guangzhou ChinaTelecom 7 * 8 219.158.9.73 161.05 ms AS4837 China Guangdong Guangzhou ChinaUnicom 9 221.4.0.126 167.50 ms AS17816 China Guangdong Shenzhen ChinaUnicom 10 58.250.0.1 166.85 ms AS17623 China Guangdong Shenzhen ChinaUnicom ----------------------------------------------------------------------
回程追踪三网都走了cn2 GIA线路，晚高峰表现有保障。
最后看UnixBench跑分：
========================================================================
BYTE UNIX Benchmarks (Version 5.1.3)
System: localhost.localhost: GNU/Linux
OS: GNU/Linux -- 4.9.215-36.el7.x86_64 -- #1 SMP Mon Mar 2 11:42:52 UTC 2020
Machine: x86_64 (x86_64)
Language: en_US.utf8 (charmap="UTF-8", collate="UTF-8")
CPU 0: AMD EPYC 7402P 24-Core Processor (5589.4 bogomips)
Hyper-Threading, x86-64, MMX, AMD MMX, Physical Address Ext, SYSENTER/SYSEXIT, AMD virtualization, SYSCALL/SYSRET
CPU 1: AMD EPYC 7402P 24-Core Processor (5589.4 bogomips)
Hyper-Threading, x86-64, MMX, AMD MMX, Physical Address Ext, SYSENTER/SYSEXIT, AMD virtualization, SYSCALL/SYSRET
07:31:28 up 7 min, 1 user, load average: 0.13, 0.16, 0.09; runlevel 3
------------------------------------------------------------------------
Benchmark Run: Sat Dec 26 2020 07:31:28 - 08:00:48
2 CPUs in system; running 1 parallel copy of tests
Dhrystone 2 using register variables 35872868.8 lps (10.0 s, 7 samples)
Double-Precision Whetstone 3136.8 MWIPS (17.8 s, 7 samples)
Execl Throughput 3602.6 lps (30.0 s, 2 samples)
File Copy 1024 bufsize 2000 maxblocks 794637.4 KBps (30.0 s, 2 samples)
File Copy 256 bufsize 500 maxblocks 227902.1 KBps (30.0 s, 2 samples)
File Copy 4096 bufsize 8000 maxblocks 2046130.5 KBps (30.0 s, 2 samples)
Pipe Throughput 1649601.2 lps (10.0 s, 7 samples)
Pipe-based Context Switching 52289.2 lps (10.0 s, 7 samples)
Process Creation 8560.3 lps (30.0 s, 2 samples)
Shell Scripts (1 concurrent) 7217.3 lpm (60.0 s, 2 samples)
Shell Scripts (8 concurrent) 1471.4 lpm (60.0 s, 2 samples)
System Call Overhead 1788028.2 lps (10.0 s, 7 samples)
System Benchmarks Index Values BASELINE RESULT INDEX
Dhrystone 2 using register variables 116700.0 35872868.8 3073.9
Double-Precision Whetstone 55.0 3136.8 570.3
Execl Throughput 43.0 3602.6 837.8
File Copy 1024 bufsize 2000 maxblocks 3960.0 794637.4 2006.7
File Copy 256 bufsize 500 maxblocks 1655.0 227902.1 1377.1
File Copy 4096 bufsize 8000 maxblocks 5800.0 2046130.5 3527.8
Pipe Throughput 12440.0 1649601.2 1326.0
Pipe-based Context Switching 4000.0 52289.2 130.7
Process Creation 126.0 8560.3 679.4
Shell Scripts (1 concurrent) 42.4 7217.3 1702.2
Shell Scripts (8 concurrent) 6.0 1471.4 2452.4
System Call Overhead 15000.0 1788028.2 1192.0
========
System Benchmarks Index Score 1193.9
------------------------------------------------------------------------
Benchmark Run: Sat Dec 26 2020 08:00:48 - 08:30:10
2 CPUs in system; running 2 parallel copies of tests
Dhrystone 2 using register variables 70893585.2 lps (10.0 s, 7 samples)
Double-Precision Whetstone 6323.3 MWIPS (17.5 s, 7 samples)
Execl Throughput 7197.6 lps (29.9 s, 2 samples)
File Copy 1024 bufsize 2000 maxblocks 586011.6 KBps (30.0 s, 2 samples)
File Copy 256 bufsize 500 maxblocks 161224.3 KBps (30.0 s, 2 samples)
File Copy 4096 bufsize 8000 maxblocks 1849878.0 KBps (30.0 s, 2 samples)
Pipe Throughput 3258777.3 lps (10.0 s, 7 samples)
Pipe-based Context Switching 413909.6 lps (10.0 s, 7 samples)
Process Creation 17324.3 lps (30.0 s, 2 samples)
Shell Scripts (1 concurrent) 9969.8 lpm (60.0 s, 2 samples)
Shell Scripts (8 concurrent) 1330.3 lpm (60.1 s, 2 samples)
System Call Overhead 2733523.8 lps (10.0 s, 7 samples)
System Benchmarks Index Values BASELINE RESULT INDEX
Dhrystone 2 using register variables 116700.0 70893585.2 6074.9
Double-Precision Whetstone 55.0 6323.3 1149.7
Execl Throughput 43.0 7197.6 1673.9
File Copy 1024 bufsize 2000 maxblocks 3960.0 586011.6 1479.8
File Copy 256 bufsize 500 maxblocks 1655.0 161224.3 974.2
File Copy 4096 bufsize 8000 maxblocks 5800.0 1849878.0 3189.4
Pipe Throughput 12440.0 3258777.3 2619.6
Pipe-based Context Switching 4000.0 413909.6 1034.8
Process Creation 126.0 17324.3 1374.9
Shell Scripts (1 concurrent) 42.4 9969.8 2351.4
Shell Scripts (8 concurrent) 6.0 1330.3 2217.1
System Call Overhead 15000.0 2733523.8 1822.3
========
System Benchmarks Index Score 1876.3单核跑分1200，两核跑分接近1900，还是不错的。
总结
该款套餐性价比不错，适合建站，也推荐购买。但是目前许多人在进行测速，可能速度不是很理想。