FWIW, our permvars.file is 2.6 MB.  Here's the most recent entry from
our logs (at 12:32 today) about the FIO cache:

*** FIO file cache now totals 29372k. A list of cached files follows.  ***

File size  Usage  Flags  File name
---------  -----  -----  ---------
    2409k      1   U     ******
     747k      1   U     ******
    2176k      1   U     ******
    1967k      1   U     ******
   10491k      1         ******
   11585k      1   U     ******

We do shut down LISTSERV once a week to rotate the log file.

On Wed, 12 Jan 2005, Paul Russell wrote:

> On 1/12/2005 10:06 AM, Bill Verity wrote:
> >>12 Jan 2005 07:03:18 Processing mail from ...
> >>
> >>*** FIO file cache now totals 5122k. A list of cached files follows. ***
> >>
> >>File size  Usage  Flags  File name
> >>---------  -----  -----  ---------
> >>   5122k      1   U     /home/listserv/home/permvars.file
> >>
> >>12 Jan 2005 07:40:12 LISTSERV(R) for unix version 1.8e starting...
>
> Interesting.
>
> Our permvars.file is now 2893 KB. What, if anything, can be done to reduce
> the size of this file?
>
> --
> Paul Russell
> Senior Systems Administrator
> OIT Messaging Services Team
> University of Notre Dame
>
>

   ====================================================================
 James Morrill  office: HL 11, 785-532-4909   www-personal.ksu.edu/~james
  And yet the same revolutionary beliefs for which our forebears fought
    are still at issue around the globe -- the belief that the rights
      of man come not from the generosity of the state but from the
     hand of God. -  John F. Kennedy Inaugural Address, Jan 20, 1961