Hi!
My question is very simple. How to increase load average Linux with programmer tools.
We need to check how increasing in load average cause for package drop on our system.
Thanks for quick answers.
Staas.

There's this tool called "stress": http://freshmeat.net/projects/stress/.

Thanks for quick answer, but I want to know how we can increase load for network cards.
Thanks Staas.

Shove several large files over the network simultaneously both ways?

I could be way off base here, but this is what I'd try ...

Take a big file (some video?) and transfer it from one PC to another (from a desktop to a server). Time how long it takes to do the transfer, just as a starting benchmark. Check for errors during the transfer as a starting benchmark, also.

Then, set up a batch file or script to auto transfer it, and have it execute in a loop - auto-overwriting the destination each time. That should provide the workload. If you can only transfer one file at a time, originating the batch/script from the server, then run it from several desktops (using different files, of course, so they're not stepping on each other). This should be scalable enough to get the kind of workload you want/need. I'd think you could have every desktop moving a big file to the server at the same time.

Then, when you know how well it works in one direction, reverse the movement at each desktop so that they are copying files from the server simultaneously. For even more variety, have half the desktops copying a file FROM the server, and the other half copying files TO the server. This should provide enough opportunities for collisions that you should be able to make an informed decision.

Monitoring the error counts is up to you - there's probably some utility to do that, if you don't have something built-in.

Umm, yeah. What he said!