re: squid performance VERY poor under load----help

Folks,

  At 2000-> 3000 req/min., my SQUID tanks!!!! Im running on Solaris 2.6
 with 2 x 250mz CPUs, 256mb memory, lots of swap, hme 10/100 interface,
 my T1 to the Internet is at >70% utilization...been tuning TCP
 parms....can't find the problem.......

thanx for any suggestions,
Mike

Cache Manager menu

Squid Object Cache: Version 2.3.STABLE4

 Start Time:
                Mon, 25 Sep 2000 20:07:16 GMT
 Current Time:
                Mon, 25 Sep 2000 20:24:59 GMT

Connection information for squid:
        Number of clients accessing cache: 1555
        Number of HTTP requests received: 54769
        Number of ICP messages received: 0
        Number of ICP messages sent: 0
        Number of queued ICP replies: 0
        Request failure ratio: 0.00%
        HTTP requests per minute: 3092.3
        ICP messages per minute: 0.0
        Select loop called: 1667 times, 637.491 ms avg
Cache information for squid:
        Request Hit Ratios: 5min: 11.1%, 60min: 6.9%
        Byte Hit Ratios: 5min: 1.7%, 60min: 0.3%
        Storage Swap size: 96871 KB
        Storage Mem size: 8312 KB
        Storage LRU Expiration Age: 0.00 days
        Mean Object Size: 5.03 KB
        Requests given to unlinkd: 4529
Median Service Times (seconds) 5 min 60 min:
        HTTP Requests (All): 10.77596 4.54239
        Cache Misses: 10.77596 5.34113
        Cache Hits: 2.79397 2.02066
        Near Hits: 9.67302 8.22659
        Not-Modified Replies: 2.50793 2.02066
        DNS Lookups: 4.36653 0.96589
        ICP Queries: 0.00000 0.00000
Resource usage for squid:
        UP Time: 1062.698 seconds
        CPU Time: 816.730 seconds
        CPU Usage: 76.85%
        CPU Usage, 5 minute avg: 63.40%
        CPU Usage, 60 minute avg: 76.88%
        Maximum Resident Size: 0 KB
        Page faults with physical i/o: 1821
Memory accounted for:
        Total accounted: 15982 KB
File descriptor usage for squid:
        Maximum number of file descriptors: 4096
        Largest file desc currently in use: 1997
        Number of file desc currently in use: 1865
        Files queued for open: 0
        Available number of file descriptors: 2231
        Reserved number of file descriptors: 100
        Store Disk files open: 11
Internal Data Structures:
         19781 StoreEntries
          1783 StoreEntries with MemObjects
          1249 Hot Object Cache Items
         19249 Filemap bits set
         19244 on-disk objects

Generated Mon, 25 Sep 2000 20:24:58 GMT, by cachemgr.cgi/2.3.STABLE4

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