Old SUN NFS performance papers.

Eric Anderson anderson at centtech.com
Mon Jan 19 12:39:06 PST 2004

Steve Francis wrote:

> Eric Anderson wrote:
>> I wasn't even sure where to start or stop snipping on this mail, 
>> since it is all good stuff - so I didn't. :)  Thanks for the great 
>> info, and good explanations..  NFS+TCP is very nice, but I do believe 
>> the UDP transport was faster on a handful of tests (however I 
>> typically force use of TCP when I can)..
>> One question - what does net.inet.ip.check_interface=0  do?
> makes FreeBSD not care if the interface a response comes in on is the 
> same as the one a request did. Helps only if network topology is funky. 

That's handy for a network like I have.  What would also be handy, is a 
sysctl like that for the client side - that tells FreeBSD to ignore the 
fact that a response is coming from a different IP than what it sent the 
request to.  Yes, I know this is a security issue, and yes I understand 
the ramifications.  Nevertheless, I need it - unless there is a way to 
tell redhat and solaris to always answer on the same interface the 
request came in on..


Eric Anderson	   Systems Administrator      Centaur Technology
All generalizations are false, including this one.

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