What's wrong with my Squid?

I am seeing poor squid performance at times and very high memory usage.
Should the Pool for disk I/O be so high? The cache is set to grow to 5000
MB ... currently there is only 600 MB cached. OS is Linux 2.0.33 patched
to allow 3000 file descriptors. The system has 64 MB of RAM and 64 MB of
swap. Page faults are very high, what could be wrong? I have allocated
30 MB of RAM in squid.conf, I do plan to add RAM to the system but didn't
think I'd have to until it grows closer to the 5000 MB limit I have set.

Cache information for squid:
Squid Object Cache: Version 1.NOVM.20
        Storage Swap size: 606 MB
        Maximum Swap size: 5000 MB
        Number of TCP connections: 166797
        Page faults with physical i/o: 287434

Accounted Memory Usage:
        StoreEntry 69106 x 52 bytes = 3509 KB
        URL strings = 3324 KB
        IPCacheEntry 49 x 36 bytes = 1 KB
        FQDNCacheEntry 0 x 56 bytes = 0 KB
        Hash link 0 x 12 bytes = 0 KB
        Pool MemObject structures 4 x 80 bytes = 0 KB (0 free)
        Pool for Request structur 5 x 4408 bytes = 21 KB (0 free)
        Pool for in-memory object 0 x 4096 bytes = 0 KB (0 free)
        Pool for disk I/O 4084 x 8192 bytes = 32672 KB (0 free)
        NetDB Address Entries 0 x 76 bytes = 0 KB
        NetDB Host Entries 0 x 8 bytes = 0 KB
        NetDB Peer Entries 0 x 24 bytes = 0 KB
        ClientDB Entries 95 x 292 bytes = 27 KB
        Miscellaneous = 1506 KB
        Total Accounted = 41110 KB

Operating system memory:

             total used free shared buffers cached
Mem: 63384 61772 1612 16172 19248 11212
-/+ buffers: 31312 32072
Swap: 64508 212 64296

*****************************************************************
* Fraser M. Campbell, Hanover, Ontario, Canada N4N 3C4 *
* Email: fraser@greynet.net Phone: (519) 364-6115 *
* http://www.greynet.net/fraser/ *
*****************************************************************
Received on Sun Apr 26 1998 - 06:45:42 MDT