expire info in history when using CNFS

[Fabien Tassin]

According to Russ Allbery:
> 
> Fabien Tassin <fta at sofaraway.org> writes:
> 
> > I agree.. but it requires *a lot* of RAM to be fast. My expire process
> > usually takes between 350 and 500MB of RAM. As my innd takes around
> > 150MB and I have two innfeed (350MB + 50MB), it is easy to start
> > swaping,
> 
> You should be able to cut back on your innfeed memory usage quite a bit.
> Mine are 16MB, 6MB, and 6MB.  Break out binaries into a separate innfeed
> process and reduce it's max-queue-size; the default of 25 is way too long
> for large binaries.  Instead, set the queue size for that innfeed to about
> 5.  Also make sure you're using min-queue-connection.  (I wonder if
> min-queue-connection should even be an option, or if we should just always
> turn it on unconditionally.)

I'm already doing all of this except that my max-queue-size is much
higher than that. Making it lower limits my output rate and I'm then
no longer able to full-feed leaf (or slow) peers, even with 25 (the default).

-- 
Fabien Tassin -+- fta at sofaraway.org