sendfile() and Varnish2.0.2

[Paras Fadte]

Hi ,

Are there issues associated with using sendfile() in varnish2.0.2 ?
Does varnish 2.0.2 use sendfile() by default ? I have read that
currently it supports sendfile() only on FreeBSD  or does it support
OS like SUSE LINUX 10.1 (X86-64) and Kernel  2.6.16.13-4-smp ?

I also tend to see increase in "overflowed work requests" over a
period of time . How can they be controlled ?

Thank you.

-Paras