FreeBSD & Memory Free

This has been bugging me for a while:

Squid 1.1.22 on FreeBSD 2.2.6 with 256MB RAM and 3 GIG cache_swap

After machine is rebooted and squid starts it takes aproximately 2 hours to
get the Free Memory go below 1 MB. It just keeps decreasing as squid takes
requests.

Then memory stays at aproximately 784K and squid keeps running. It can run
for 3 days without any problems. Any ideas?

My kernel is compiled with:

maxusers 256
options "DFLDSIZ=(128*1024*1024)"
options "SOMAXCONN=128"
options "MAXDSIZ=(256*1024*1024)"
options "NMBCLUSTERS=10240"

----
TOP:
last pid:  5697;  load averages:  0.09,  0.12,  0.08
08:39:39
25 processes:  1 running, 24 sleeping
CPU states:  1.9% user,  0.0% nice,  1.9% system,  6.6% interrupt, 89.5%
idle
Mem: 179M Active, 604K Inact, 31M Wired, 39M Cache, 8348K Buf, 784K Free
Swap: 256M Total, 64K Used, 256M Free
VMSTAT:
 procs      memory     page                         faults      cpu
 r b w     avm   fre  flt  re  pi  po  fr  sr s0   in   sy  cs us sy id
 1 1 0  180868 40764    2   0   0   0   4   0 24  549 1584  59 11 14 75
VMSTAT -m:
Memory statistics by bucket size
Size   In Use   Free   Requests  HighWater  Couldfree
  16       33    735       3545    1280          0
  32      170   1494     404597     640        302
  64    22265    647    6142285     320      13157
 128    44417    991    8703320     160         58
 256    21989   2379   12364257      80        408
 512       41     31       5783      40          0
  1K        9    419    3582881      20    3094992
  2K      216      4     706913      10      78212
  4K        6      2        128       5          0
 16K        2      0          2       5          0
 32K        1      0          1       5          0
 64K        6      0         21       5          0
Memory usage type by bucket size
Size  Type(s)
  16  devbuf, pcb, routetbl, vnodes, proc, temp, sysctl
  32  devbuf, pcb, routetbl, pgrp, session, subproc, temp
  64  devbuf, routetbl, ifaddr, namecache, VM mapent, file, lockf,
          in_multi, temp
 128  pcb, routetbl, zombie, ifaddr, cred, vnodes, VM map, VM object,
          file desc, temp, ttys
 256  devbuf, socket, pcb, routetbl, ioctlops, vnodes, VM map, file desc,
          subproc, FFS node, NFS srvsock, NFS daemon, temp, isa_devlist,
          select
 512  devbuf, pcb, ioctlops, mount, UFS mount, file desc, proc, temp,
          isa_devlist, BIO buffer, select
  1K  devbuf, namei, UFS mount, file desc, proc, NQNFS Lease, temp,
          BIO buffer, select
  2K  devbuf, UFS mount, file desc, ttys, BIO buffer
  4K  devbuf, file desc, proc, temp
 16K  mbuf, devbuf
 32K  MSDOSFS mount
 64K  NFS node, namecache, UFS quota, UFS mount, VM pgdata
Memory statistics by type                          Type  Kern
        Type  InUse MemUse HighUse  Limit Requests Limit Limit Size(s)
         mbuf     1    16K     16K 19661K        1    0     0  16K
       devbuf    30    36K     36K 19661K       63    0     0
16,32,64,256,512,1K,2K,4K,16K
       socket   272    68K    348K 19661K  4590314    0     0  256
          pcb   536   101K    518K 19661K  9105929    0     0
16,32,128,256,512
     routetbl   238    32K    441K 19661K   792472    0     0
16,32,64,128,256
       zombie     0     0K      1K 19661K     5674    0     0  128
       ifaddr     9     2K      2K 19661K        9    0     0  64,128
        namei     0     0K      6K 19661K  3566789    0     0  1K
     ioctlops     0     0K      1K 19661K        5    0     0  256,512
         cred    23     3K      4K 19661K     2521    0     0  128
         pgrp    13     1K      1K 19661K     1356    0     0  32
      session    11     1K      1K 19661K     1320    0     0  32
        mount     4     2K      2K 19661K        4    0     0  512
     NFS node     1    64K     64K 19661K        1    0     0  64K
       vnodes 21296  2662K   2671K 19661K    24804    0     0  16,128,256
    namecache 21267  1394K   1394K 19661K    21267    0     0  64,64K
    UFS quota     1    64K     64K 19661K        1    0     0  64K
    UFS mount    10    76K     76K 19661K       10    0     0  512,1K,2K,64K
       VM map    35     8K     11K 19661K     5709    0     0  128,256
    VM mapent   872    55K     55K 19661K      872    0     0  64
    VM object 16180  2023K   2035K 19661K  1266240    0     0  128
    VM pgdata     2   128K    256K 19661K       17    0     0  64K
         file    99     7K     46K 19661K  6119738    0     0  64
    file desc    31    10K     12K 19661K     5712    0     0
128,256,512,1K,2K,4K
        lockf     1     1K      1K 19661K      153    0     0  64
         proc    35    24K     28K 19661K     5711    0     0  16,512,1K,4K
      subproc    34     3K      4K 19661K    11382    0     0  32,256
     FFS node 21258  5315K   5317K 19661K  2842803    0     0  256
  NQNFS Lease     1     1K      1K 19661K        1    0     0  1K
  NFS srvsock     2     1K      1K 19661K        2    0     0  256
   NFS daemon     1     1K      1K 19661K        1    0     0  256
     in_multi     2     1K      1K 19661K        2    0     0  64
MSDOSFS mount     1    32K     32K 19661K        1    0     0  32K
         temp  6495   815K    842K 19661K  2818893    0     0
16,32,64,128,256,512,1K,4K
         ttys   169    25K     30K 19661K      871    0     0  128,2K
  isa_devlist     1     1K      1K 19661K        2    0     0  256,512
       sysctl     0     0K      1K 19661K        1    0     0  16
   BIO buffer   210   417K    419K 19661K   723014    0     0  512,1K,2K
       select    14     5K      5K 19661K       69    0     0  256,512,1K
Memory Totals:  In Use    Free    Requests
                13381K   1268K    31913734
This ^^ system was up for 3 days:
8:41AM  up 3 days, 21:40, 2 users, load averages: 0.21, 0.14, 0.09
******** * * * *  *  *   *    *     *
* Mark Dabrowski - Systems Engineer
*     ICA Canada On-Line Inc.
*  Tel. (416) 324-2663 ext. 5067
*          ICQ# 6583668
******** * * * *  *  *   *    *     *