| How to test the speed of a host | | | | 8 138 ms 149 ms 146 ms |
| Testing speed is not complicated, but it's not very | | | | 195.ATM2-0.TR1.SCL1.ALTER.NET [146.188.146.2] |
| simple either. I will talk about speed in the large sense | | | | 9 189 ms 170 ms 209 ms |
| of the word. Basically speed is a measure on how | | | | 107.ATM6-0.TR1.NYC1.ALTER.NET [146.188.137.165] |
| fast can the data be transmitted between the visitor | | | | 10 187 ms 180 ms 180 ms |
| and the host's server. | | | | 199.ATM7-0.XR1.BOS1.ALTER.NET [146.188.179.85] |
| You can test a first type of speed by pinging the | | | | 11 194 ms 177 ms 185 ms |
| server. That can be done at the MS-DOS prompt | | | | 191.ATM8-0-0.GW1.BOS1.ALTER.NET [146.188.176.225] |
| with a simple command: ping serverID, where server | | | | 12 196 ms 208 ms 179 ms NVC.customer.UU.NET |
| ID is either a domain name (e.g. C:>ping yahoo.com), | | | | [64.68.0.242] |
| either an IP (e.g. C:> ping 128.65.134.89). | | | | 13 197 ms 206 ms 207 ms [64.68.191.111] |
| The results should be similar to these: | | | | The numbers on the left are the so-called "hops". |
| Reply from 64.190.235.64: bytes=32 time=432ms | | | | The number of hops that it takes to transmit a |
| TTL=45 | | | | packet of data from computer A to computer B is |
| Reply from 64.190.235.64: bytes=32 time=180ms | | | | the number of routers. In our example there are 13 |
| TTL=45 | | | | hops. |
| Reply from 64.190.235.64: bytes=32 time=377ms | | | | As you can see, each response line gives you the |
| TTL=46 | | | | HOP #, the round trip times for the 3 packets that |
| Reply from 64.190.235.64: bytes=32 time=216ms | | | | were sent and host information (IP address and/or |
| TTL=45 | | | | host name). |
| Ping statistics for 64.190.235.64: | | | | The roundtrip times for each hop are representative |
| Packets: Sent=4 Received=4 Lost=0 (0% loss) | | | | of the time it takes to go from the source to the |
| Approximate round trip times in milli-seconds: | | | | host for that particular hop and back to the source. |
| Minimum = 180ms, Maximum = 432ms, Average = | | | | Short times are a good sign. Also, a small number of |
| 301 ms | | | | hops is usually a good sign. |
| To understand the figures, one must first understand | | | | Traceroute is a good way to determine path but, |
| how ping works. It's actually pretty basic. When you | | | | just as ping, it should not be used as the last word |
| ping a computer you're sending a message: "Hey! Are | | | | when it comes to speed evaluation. |
| you there?" Then comes the answer: "Yes, I'm here!". | | | | The ultimate test is the download speed test. To do |
| By measuring the time it took to receive your | | | | that you should ask the host for a test download file. |
| message plus the time it took it's message to get to | | | | That's about the best way to judge speed. The goal |
| you (and by repeating this process a few times) one | | | | is to find a host that has the capability of sending at |
| get a fair idea on how fast these computers can | | | | least a few hundred kBytes/second. If you're on a |
| communicate. | | | | dial-up connection you'll not be able to test this |
| It's all in the time measurement. A ping time of under | | | | yourself. Read on and you'll find a solution to this |
| 200ms is very good, 200 to 400ms is average and | | | | particular problem. |
| 400ms and above are poor ping times. However, | | | | Because the host might try to fool you by giving you |
| poor ping times do not always indicate a problem. If | | | | a test file located on a fast, almost empty server, it |
| you are pinging servers that are very far away | | | | might be even better if you'd contact a current |
| (pinging a server located in USA from a computer | | | | customer and ask him/her to post a test file on his |
| located in Australia), poor ping times are normal even | | | | account. |
| for a good connection. | | | | The file should be big enough to allow you to see the |
| The Loss % represents the percentage of packets | | | | speed stability over time. A 10-15 Mb file should be |
| (sent messages) that were "lost" (did not return | | | | enough. Another important aspect is the time of the |
| within 1 second). Lost packets are, obviously, not | | | | test. The best times are rush hours actually, when |
| good. | | | | the server are busy. These are are in the morning |
| Another way to measure speed is traceroute. | | | | when most people read their emails (8am on the |
| Obviously this traces the route between the | | | | east coast of the US) and dinner time. Take care to |
| computer and the server. As the information goes | | | | compensate for time differences as not all servers |
| from your computer to the server, it passes through | | | | host American websites. |
| a few so-called routers. A traceroute will tell you how | | | | Always keep in mind that all results depend on |
| many routers are involved and information about the | | | | location, ISP etc. This is why it's good to run a |
| routers. | | | | tracert from other computers located in other places |
| The MS-DOS command for traceroute is tracert | | | | of the world (where a significant part of your visitors |
| serverID. | | | | might come from). Good places where you can do |
| The results should be similar to these: | | | | that are and |
| C:WINDOWS>tracert | | | | I recommend you to ask the people at to help you |
| Tracing route to [64.68.191.111]over a maximum of 30 | | | | with your speed test. Usually there are people from |
| hops: | | | | all over the world there, so you will get to have the |
| 1 119 ms 121 ms 120 ms sym0103723m01.bctel.net | | | | host tested from various parts of the world, through |
| [207.102.1.251] | | | | different networks, etc. Don't forget to post the |
| 2 107 ms 114 ms 98 ms 207.102.34.249 | | | | URL of the test file! |
| 3 113 ms 117 ms 123 ms 192.197.174.118 | | | | For as much as I know the right place for this king of |
| 4 135 ms 122 ms 116 ms 166.48.13.245 | | | | test requests is the "Other reviews" forum located |
| 5 134 ms 145 ms 159 ms core7.SanFrancisco.cw.net | | | | at |
| [204.70.4.93] | | | | Do all these things I told you about and you'll get a |
| 6 144 ms 142 ms 136 ms Hssi2-1-0.BR1.SCL1.Alter.Net | | | | pretty good idea about the speed of the host you're |
| [206.157.77.74] | | | | investigating. Hmm... tough word... "investigating". It |
| 7 145 ms 152 ms 147 ms | | | | makes all these things sound soo... dangerous! |
| 105.ATM3-0.XR1.SCL1.ALTER.NET [146.188.145.158] | | | | |