[squid-users] Squid crashed on Redhat 9.0

Hi,
Squid stops on Redhat Linux 9.0 server.
Here is the message I found in cache.log.
Could not find any error message on system logs.
System have 1G RAM and Half G Swap Space.
Cahce_mem was set to 128M
Do you think minimizing cache_mem will avoid squid crashing or
Do I need to increase my swap space.
What does "page faults with physical i/o" here means?

Regards,
nooshin
  
CPU Usage: 696510.750 seconds = 281864.620 user + 414646.130 sys
Maximum Resident Size: 0 KB
Page faults with physical i/o: 7898823
Memory usage for squid via mallinfo():
        total space in arena: 577044 KB
        Ordinary blocks: 567230 KB 17013 blks
        Small blocks: 0 KB 6 blks
        Holding blocks: 10996 KB 6 blks
        Free Small blocks: 0 KB
        Free Ordinary blocks: 9814 KB
        Total in use: 578226 KB 100%
        Total free: 9814 KB 2%
Received on Fri Sep 26 2003 - 17:42:50 MDT