From: Eric Hodel <drbrain@...7.net>
Date: 2007-01-23T08:49:17+09:00
Subject: Re: resolv-replace problem

On Jan 22, 2007, at 14:44, Matt Lawrence wrote:
> After running through aproximately 512 ip to name resolutions, the  
> resolv-replace library seems to become very slow and starts  
> blocking threads.  Any ideas?
>
> Any good alternatives for doing ip address to name lookups on  
> thousands of systems?

I've experienced this problem and assumed it was due to resolv- 
replace waiting for the destination name servers to time out, but  
didn't verify.  Have you examined this possibility?

If you've got 1000 bogus host names, 100 threads and a 30 second  
timeout per thread you'll still wait at least 5 minutes for all of  
them to fail to resolve.

-- 
Eric Hodel - drbrain@segment7.net - http://blog.segment7.net

I LIT YOUR GEM ON FIRE!