"hobbitd status-board not available" from bbgen on solaris 10

[Colin Spargo]

If anyone has been having issues with bbgen logging this error mesage on 
Solaris 10 and intermittently  failing, resulting in blank status pages, 
then I think I have found a workaround. 

If you disable TCP fusion be adding the following kernel parameter to 
/etc/system and reboot, hopefully you will find that the problem goes 
away.

set ip:do_tcp_fusion = 0

Apparently this can be done on a live system as well (without rebooting), 
but will require hobbit to be restarted. To do this:

echo do_tcp_fusion/W0 | mdb -kw


TCP fusion is only used on local loopback connections to speed them up by 
bypassing the normal TCP stack. I found that the problem only occured when 
connecting to hobbitd locally. I tried running "bb localhost hobbitdboard" 
once a second, and found it would often return no data, but if I ran the 
same command from another host to the hobbit server, it always returned 
correct data. This made me suspect TCP fusion, as I have run into issues 
with it before. It it is best left disabled in my opinion.
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