[ic] Testing maximal connects

Dan Browning interchange-users@interchange.redhat.com
Fri Nov 30 18:00:01 2001


> On Fri, 30 Nov 2001, Thomas Dan Otto wrote:
> 
> TDO>>I want to know, how much people can use the shop in the 
> same time 
> TDO>>and then how the performance is.
> 
> An unlimited number of people (almost) can use the store at 
> the same time.
> 
> Performance is dependent on the speed of the computer(s) you 
> are using and the bandwidth of your connection.
> 
> TDO>>But I got a problem:
> TDO>>When i.e. 15 people work on the shop, the basket is 
> empty, when I 
> TDO>>want to pay - why?
> 
> I don't see what this has to do with performance, but 
> possibly you don't have cookies enabled.
> 
> TDO>>(To simulate the test, I write a perl script, that reads out the 
> TDO>>first page, sleep two seconds, and then reread the first 
> page and 
> TDO>>that 15 scripts parallel)
> 
> That's not a fair test!
> 
> The users are going to download a page. Sometimes they click 
> on to the next page, but many times they are going to pause 
> to read the page that they are on. And sometimes that page 
> sits there while they go to get a beer, or get rid of a beer.
> 
> It's also going to depend on the speed of their connection to 
> your store. A dozen people connected via 56k modems will get 
> served in a shared mode. Feed a little to user A until his 
> stream is full, feed to user B until his stream is full, user 
> C, user D, etc, and then go back to see who is ready for some 
> more. This is also going to depend on the lag time across the 
> internet between each user and your store.
> 
> I monitor such things with MRTG to keep track of loading.
> 
> -= Jim =-

Webalizer and Ntop are also good for network monitoring.  OpenNMS is
also quite wonderful I've heard as well. 

Dan Browning
Kavod Technologies