[squid-users] Memory Allocation Error

Anybody can explain this error in our squid server...Tnx!!!

2002/02/16 11:00:59| comm_poll: poll failure: (12) Cannot allocate memory
2002/02/16 11:00:59| Select loop Error. Retry 1
2002/02/16 11:00:59| comm_poll: poll failure: (12) Cannot allocate memory
2002/02/16 11:00:59| Select loop Error. Retry 2
2002/02/16 11:00:59| comm_poll: poll failure: (12) Cannot allocate memory
2002/02/16 11:00:59| Select loop Error. Retry 3
2002/02/16 11:00:59| comm_poll: poll failure: (12) Cannot allocate memory
2002/02/16 11:00:59| Select loop Error. Retry 4
2002/02/16 11:00:59| comm_poll: poll failure: (12) Cannot allocate memory
2002/02/16 11:00:59| Select loop Error. Retry 5
2002/02/16 11:00:59| comm_poll: poll failure: (12) Cannot allocate memory
2002/02/16 11:00:59| Select loop Error. Retry 6
2002/02/16 11:00:59| comm_poll: poll failure: (12) Cannot allocate memory
2002/02/16 11:00:59| Select loop Error. Retry 7
2002/02/16 11:01:00| comm_poll: poll failure: (12) Cannot allocate memory
2002/02/16 11:01:00| Select loop Error. Retry 8
2002/02/16 11:01:00| comm_poll: poll failure: (12) Cannot allocate memory
2002/02/16 11:01:00| Select loop Error. Retry 9
2002/02/16 11:01:00| comm_poll: poll failure: (12) Cannot allocate memory
2002/02/16 11:01:00| Select loop Error. Retry 10
FATAL: Select Loop failed!
Squid Cache (Version 2.3.STABLE4): Terminated abnormally.
CPU Usage: 4727.790 seconds = 1972.070 user + 2755.720 sys
Maximum Resident Size: 0 KB
Page faults with physical i/o: 249332
Memory usage for squid via mallinfo():
        total space in arena: 69545 KB
        Ordinary blocks: 67427 KB 2260 blks
        Small blocks: 0 KB 0 blks
        Holding blocks: 176 KB 1 blks
        Free Small blocks: 0 KB
        Free Ordinary blocks: 2118 KB
        Total in use: 67603 KB 97%
        Total free: 2118 KB 3%

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