Compression question / problem

Alex Tweedly alex at
Wed Jan 12 17:58:46 EST 2005

Chipp Walters wrote:

> It'll take only slightly longer to download 50 separate files than one 
> large file. I think I would make that design decision based on other 
> criteria than just time.

I have to disagree with that  -  it may take more than "slightly 
longer", depending on circumstances.

Multiple small files (assuming you don't parallelize them) will cost you 
at least one extra round-trip time per file (and possibly more depending 
on the server, firewall, proxy, nat box, etc.). So on a "typical" 
client, open a shell and "ping" the server. Take the average round-trip 
time reported, and multiply by 50 - that's the approx cost of multiple 
small files.

You have a base time of around 10 seconds in this case (50 x 10k over a 
512K DSL connection), so you can tell whether or not it would be a 
noticeable increase.

my house to my web server      
   round trip = 48ms, overhead = 2.4 secs.  10 sec vs 12 sec ? - not 
my house to
   round trip = 140 ms, overhead = 7 seconds.   10 sec vs 17 sec - worth 
worrying about.

-- Alex.

No virus found in this outgoing message.
Checked by AVG Anti-Virus.
Version: 7.0.300 / Virus Database: 265.6.10 - Release Date: 10/01/2005

More information about the Use-livecode mailing list