packet loss?

[kenny1999]

hi, i am concerned about packet loss over internet download, which couldn't be noticed by download manager (100% complete doesn't necessarily mean flawless). I've tried two different online java tests on packet loss, but their results are different.

one from the site.
http://www.pingtest.net
another one
http://addgadgets.com/speedtest/

The former one always returns with 0% packet loss but the latter one usually returns with 10-20% packet loss. It says that sending 100 packets out and I could only receive 80 something. I don't really know if it is.

Now
which one should I trust?
I am running on 100Mb broadband network, it's fast but not the fastest in my country. I like to download things overseas. Download manager of browsers or any other external downloaders never show me that i have failed to download any files. I don't know if there is really packet loss.

I look for integrity of files while their checksums are not available.

Thanks for any answers in advance.

 

[MyCattMaxx]

My advice is don't worry about it.
Millions of people download every day with no issue or worries about packet loss.
Your connection to the internet is not the only thing that comes into play, there is their connection, relay connections etc.

 

[kenny1999]

My advice is don't worry about it.
Millions of people download every day with no issue or worries about packet loss.
Your connection to the internet is not the only thing that comes into play, there is their connection, relay connections etc.

i also didn't worry about packet loss before i know that a 100% complete file may not be really complete.

1. do you mean my internet connection is so fast that it is unlikely to have packet loss ？
2. but why such term "packet loss" is there if we don't have to worry about packet loss

thanks

 

[MyCattMaxx]

I used to download on dial-up with no problems except time.
There can be packet loss from the source side, thru the internet relay servers etc.
You are just over thinking it.

If you are that concerned about packet loss you might try ordering the cd/dvd.

 

[kenny1999]

I used to download on dial-up with no problems except time.
There can be packet loss from the source side, thru the internet relay servers etc.
You are just over thinking it.

If you are that concerned about packet loss you might try ordering the cd/dvd.

While ordering CD/DVD internationally is not possible (at least for me) , i hope to continue the discussion on "preventing" or "reducing the chance" of packet loss.

I've just downloaded 150 ZIP files from a website, the downloading speed was fast and satisfactory. Multiple files were downloaded at the same time with rate at 500KB/s or more for each. There was no disconnection over the process, but then I extracted the 150 zip files, but one of the files in that 150 files were corrupted, which cannot be extracted, returning with CRC error. I've downloaded the file again and in the second time, the file is good. I've then compared MD5 checksum of both files (the first one and the second one), of course they are mis-matched.

Re-downloading is usually not a problem but the real big problem for me is , the browsers doesn't return with an incorrect or failed message! When I check the properties, both files (the corrupted one and the good one) has exactly the same number of bytes!

Zip files might not be a problem because you can notice. How about video files or other files, while checksum are not provided, how can I ensure the file downloaded is intact? No way?