[hobbit] HTTP Test Timeout & Delays -- More Info

[James Wade]

I found a work-around to my problem.

I was monitoring some pages where the security certificate
was internally generated. If I went to those pages manually,
via a browser window, it would give me a security alert
pop-up window saying the security certificate name is invalid
and doesn't match the site. (Which it doesn't because they
are just using a self-generated one in development for testing)

Anyways, I had about 10 boxes that had this problem, and all
10 were getting timeouts at 10 seconds. This resulted in all
the other http tests starting to get random timeouts as well.
Almost as though all the other http tests were waiting on these
10 machines.

After I removed the 10 machines from bb-hosts, everything started
working just fine, and my graphs went down to 0.XX seconds.

Any suggestions on how I can get past this delay caused by the
security alert? What about the reason that a delay in a few boxes
causes all http tests to delay on all other machines?

Thanks....James

-----Original Message-----
From: Henrik Stoerner [mailto:henrik at hswn.dk] 
Sent: Friday, November 17, 2006 2:14 AM
To: hobbit at hswn.dk
Subject: Re: [hobbit] HTTP Test Timeout & Delays

On Thu, Nov 16, 2006 at 09:31:53AM -0600, James Wade wrote:

> After adding the additional URL's, I started getting Timeouts
> across the board. If I look at the graph for old URL's, it
> shows the graph increasing at the same time I implemented
> all the new URL's yesterday.
> ie. I went from about 30 to 60 URL's.

By default, Hobbit runs lots of network tests in parallel. It has been
seen that this can overwhelm either a server or some of your network
infrastructure; or just generate enough traffic that packets are dropped
on their way to the Hobbit server.

60 URL's aren't a whole lot, though.

Still, you can try lowering the number of concurrent tests that Hobbit
performs. The "--concurrency=N" option for bbtest-net does that (goes in
hobbitlaunch.cfg). See the bbtest-net(1) man-page.


Henrik


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