> > i.e. to around 5% of physical memory.  To verify that this is the case,
> > could you do
> >
> > 	`sysctl -w vm.bufcache=5'
> >
> > and see if that makes the symptoms go away?
>
> Yes. Many thanks.
>
> So with the default I got on boot 30, and 5 demonstrating a marked improvement,
> whats a rational choice? I'm tempted to try binary chop on the space between for
> a while. 30 must have been predicated on some belief about 'more is better' but
> it clashed head-on with interactive response on laptops (at least).
>
can't it be changed to be like filemin/filemax - so minimum and maximum
value can be entered, it have highest priority when goes below min, normal
when below max and exceeds max only if memory is unused?

then something like min=2% max=5% will work nice