Singapore has a superior geographical location and advanced network infrastructure, making it the preferred transit point for mainland enterprises to "go global to Southeast Asia". At the same time, there are a large number of service providers on the market that claim to offer "Singapore direct VPS", which has led many users to find that the latency is high and the packet loss is serious after renting, and the experience is far from what is described in the promotion. Therefore, before purchasing, be sure to conduct a comprehensive test of the line and performance.

　　When evaluating whether the VPS line meets the standard, you can conduct tests from the following five key dimensions:

　　Ping delay: The main purpose is to determine the network response time. Ping values ​​<80ms are good, and 100ms or more are cautious

　　Traceroute routing: The main purpose is to view the data packet path. A small number of hops and a transit point of Singapore indicate a direct connection

　　Packet loss rate: It is mainly used to measure transmission stability. 0% is good. >1% requires checking network quality

　　Bandwidth measurement: It is mainly used to determine the upstream and downstream rates. It is ideal if the actual download/upload is higher than 10Mbps

　　TCP handshake/webpage loading speed is a comprehensive access experience. Loading time is less than 2 seconds.

　　Next, we will explain how to perform the above tests in combination with tools.

　　1. Ping test: the most basic network delay determination

　　Ping is one of the most common testing methods and can be completed through Windows, Linux or online tools.

　　How to use (Windows example):

　　ping -n 10 [VPS IP address]

　　Observe the Average delay value in the results.

　　Below 60ms: high-quality direct connection;

　　60ms~90ms: good level;

　　Above 100ms: may be a detour route.

　　Suggestion: perform Ping tests in three network environments, namely China Telecom, China Unicom, and China Mobile, to determine the adaptability of the line to different operators.

　　II. Traceroute routing tracking: reveal whether the path is directly connected

　　The path of the data packet can be traced through the traceroute (Linux) or tracert (Windows) command.

　　Sample command (Windows):

　　tracert [VPS IP address]

　　Observe routing nodes:

　　If the first few hops are the exit of the Chinese operator, the last few hops are the Singapore backbone, and there is no multinational IP in the middle (such as Japan, the United States, etc.), it means that the line is directly connected or pseudo-directly connected (BGP);

　　If the United States, Japan and South Korea nodes appear, it means that there is a detour;

　　If there are many node jumps (more than 20 hops), the line is at risk of instability.

　　3. Packet loss rate test: an important reference for stability

　　You can use the mtr tool or third-party services such as Ping.pe and Cloudflare Radar to check packet loss.

　　Use mtr in Linux:

　　mtr -rwzbc100 [VPS IP]

　　Key observation points:

　　Loss% column: Normally it should be 0%;

　　If a certain jump starts to lose a lot of packets, it may be a problem with the network quality of that section.

　　Packet loss higher than 1% will seriously affect TCP transmission, especially HTTP/HTTPS and SSH services.

　　4. Bandwidth test: measure data transmission rate

　　Although bandwidth depends on the VPS package, it is also affected by the line quality. Testing the download/upload speed can intuitively judge its value.

　　Method 1: Speedtest CLI (Linux)

　　curl -s https://install.speedtest.net/app/cli/install.rpm.sh | sudo bash
　　speedtest

　　Observe the upload and download results:

　　Greater than 10Mbps: general sites are available;

　　Greater than 50Mbps: suitable for large bandwidth scenarios such as video and file transfer;

　　Less than 5Mbps: choose with caution.

　　Method 2: Upload/download large files to test speed

　　Put a test file on a Singapore VPS, and then download it with a domestic client to test the actual transmission rate. For example:

　　wget http://your-vps-ip/testfile.zip -O /dev/null

　　V. Web page access and TCP response test: experience level verification

　　For C-end user-oriented services, it is recommended to judge performance by simulating the end-user access experience.

　　Deploy a simple website (such as Nginx + HTML page) on the VPS, and test the access speed with a browser or curl command.

　　Use the web speed test platform of the webmaster tool to test the response time of accessing the VPS page from different nodes in China.

　　curl -o /dev/null -s -w "%{time_starttransfer}\n" http://your-vps-ip/

　　The result is preferably less than 1 second.

　　Avoidance guide: Beware of the following issues

　　Fake "Singapore IP", although some merchants call it a Singapore node, the IP belongs to Japan or India, and the IP geographical ownership needs to be verified.

　　"Fake CN2 line", some service providers claim to use CN2 line, but in fact it is only used for inbound, and the return trip still uses ordinary BGP or detour links.

　　Public network IP sharing/speed limit, some low-priced VPS shared bandwidth or QoS speed limit, the actual measured rate is far from the standard, and even FTP transmission is interrupted.

　　Free trial trap, the surface supports testing, but in fact the trial node is better than the actual deployment node, and it is "re-shelled" after renting.

　　Testing is not an option, but a necessary link. When choosing a Singapore direct-connect VPS, "try before you buy" and do a comprehensive network test are important preparatory steps to ensure the stable operation of online business. Do not just listen to the service provider's propaganda, and make reasonable use of these testing tools and methods to avoid pitfalls and accurately evaluate the cost-effectiveness of different VPS solutions.