Page faults with physical i/o

Running 2.2.STABLE5 in test as a proxy server on a Sun Netra J
(UltraSparc), Solaris 2.6 with latest patch cluster and 608MB memory.
Cache is 4GB across three drives controlled by Sun Disksuite. Squid
compiled with --enable-dlmalloc, --enable-cache-digests,
--disable-ident-lookups. cache_mem is set at 32MB. Currently 165 MB free
memory. System is set with priority paging enabled. My question is why
do I have so many Page faults with physical i/o: 7145? This seems like a
lot for so few requests.

Squid Object Cache: Version 2.2.STABLE5

 Start Time:
          Mon, 25 Oct 1999 16:02:24 GMT
 Current Time:
          Wed, 27 Oct 1999 14:37:48 GMT

Connection information for squid:
        Number of clients accessing cache: 15
        Number of HTTP requests received: 7069
        Number of ICP messages received: 2303
        Number of ICP messages sent: 2303
        Number of queued ICP replies: 0
        Request failure ratio: 0.00%
        HTTP requests per minute: 2.5
        ICP messages per minute: 1.6
        Select loop called: 356793 times, 470.088 ms avg
Cache information for squid:
        Request Hit Ratios: 5min: 54.2%, 60min: 52.9%
        Byte Hit Ratios: 5min: 33.1%, 60min: 21.6%
        Storage Swap size: 246625 KB
        Storage Mem size: 7564 KB
        Storage LRU Expiration Age: 365.00 days
        Mean Object Size: 9.07 KB
        Requests given to unlinkd: 312
Median Service Times (seconds) 5 min 60 min:
        HTTP Requests (All): 1.00114 0.52331
        Cache Misses: 1.46131 1.24267
        Cache Hits: 0.00815 0.01745
        Near Hits: 1.17732 1.17732
        Not-Modified Replies: 0.01309 0.01235
        DNS Lookups: 0.02809 0.03079
        ICP Queries: 0.00000 0.00000
Resource usage for squid:
        UP Time: 167723.987 seconds
        CPU Time: 103.700 seconds
        CPU Usage: 0.06%
        CPU Usage, 5 minute avg: 0.40%
        CPU Usage, 60 minute avg: 0.07%
        Maximum Resident Size: 0 KB
        Page faults with physical i/o: 7145
Memory usage for squid via mallinfo():
        Total space in arena: 15988 KB
        Ordinary blocks: 15957 KB 39 blks
        Small blocks: 0 KB 0 blks
        Holding blocks: 11832 KB 4 blks
        Free Small blocks: 0 KB
        Free Ordinary blocks: 30 KB
        Total in use: 27789 KB 174%
        Total free: 30 KB 0%
Memory accounted for:
        Total accounted: 11266 KB
File descriptor usage for squid:
        Maximum number of file descriptors: 4096
        Largest file desc currently in use: 61
        Number of file desc currently in use: 39
        Files queued for open: 0
        Available number of file descriptors: 4057
        Reserved number of file descriptors: 100
        Store Disk files open: 0
Internal Data Structures:
         27230 StoreEntries
          1637 StoreEntries with MemObjects
          1636 Hot Object Cache Items
         27187 Filemap bits set
         27187 on-disk objects

-- 
Jim Richey
jrichey@highmark.com
Highmark, Inc.
http://www.highmark.com