The result is rather ugly:
total used free shared buffers cached
Mem: 95804 94052 1752 46416 4456 18180
-/+ buffers: 71416 24388
Swap: 104416 21400 83016
As you can see, the number of buffers is much too low. The system isn't
caching enough directody blocks and averages about two Netnews articles per
second. Not nearly enough, I'm afraid. :-(
What to do? I'm playing around with various tuning parameters in
/proc/sys/vm/*, but no luck so far. Any help appreciated.
NB: Of the RAM in this machine, admittedly, half (RSS output of ps) is
taken up by squid and half of the rest is taken by INN. On a whim, I
SIGSTOPped the cache server. Five minutes later, squid still had a constant
RSS of 42 MBytes and the first annoyed users were calling in, so I had to
continue it. :-/ vmstat, too, shows almost no swap activity.