[squid-users] cache questions

Hi All,

Running Squid.2.5-STABLE1 and getting ready to switch to Squid.2.5-STABLE2.
System OS is RedHat Linux.

I've been checking archives for some general cache info. I'm thinking I
need to increase cache, but not sure. Currently,
cache_dir ufs /d1/squid_cache 2048 16 256

I have some disk that could be used for cache.
/dev/sdb1 17488652 7408048 9192212 45% /d1

System has 1gig of memory. Number of proxy users usually averages
between 250 to 300.

Generally, is it best to use as much disk for cache as possible?

system says /d1/squid_cache is using 1.9gig.
If cache is full (or soon to be full), then should I increase cache size?
How do you determine if cache_dir is filled? I only know to run disk
usage (du -sh /d1/squid_cache) to determine how
 much disk directory is using). Does Squid's cache mgr tell current
size of cache, available/remaining?

Looking at cache dirs, only first four dirs of the the 16 are filled.
Why aren't all 16 dirs being used? Is current 2 gig allocated to cache
not enough to fill all 16 dirs?

Enclosed is cache mgr runtime info.

Thanks !

Squid Object Cache: Version 2.5.STABLE1-20030102

Start Time: Wed, 05 Mar 2003 20:10:04 GMT
Current Time: Thu, 27 Mar 2003 16:01:06 GMT

Connection information for squid:
    Number of clients accessing cache: 342
    Number of HTTP requests received: 11201554
    Number of ICP messages received: 0
    Number of ICP messages sent: 0
    Number of queued ICP replies: 0
    Request failure ratio: 0.00%
    Average HTTP requests per minute since start: 356.4
    Average ICP messages per minute since start: 0.0
    Select loop called: 180343978 times, 10.457 ms avg
Cache information for squid:
    Request Hit Ratios: 5min: 31.8%, 60min: 37.5%
    Byte Hit Ratios: 5min: 21.3%, 60min: 15.0%
    Request Memory Hit Ratios: 5min: 7.9%, 60min: 2.6%
    Request Disk Hit Ratios: 5min: 37.2%, 60min: 37.7%
    Storage Swap size: 1887456 KB
    Storage Mem size: 8248 KB
    Mean Object Size: 10.35 KB
    Requests given to unlinkd: 2480416
Median Service Times (seconds) 5 min 60 min:
    HTTP Requests (All): 0.09736 0.09219
    Cache Misses: 0.15888 0.18699
    Cache Hits: 0.01164 0.00919
    Near Hits: 0.12783 0.11465
    Not-Modified Replies: 0.00379 0.00767
    DNS Lookups: 0.01535 0.01686
    ICP Queries: 0.00000 0.00000
Resource usage for squid:
    UP Time: 1885862.149 seconds
    CPU Time: 69315.550 seconds
    CPU Usage: 3.68%
    CPU Usage, 5 minute avg: 7.76%
    CPU Usage, 60 minute avg: 5.93%
    Maximum Resident Size: 0 KB
    Page faults with physical i/o: 2447
Memory usage for squid via mallinfo():
    Total space in arena: 64956 KB
    Ordinary blocks: 37133 KB 3958 blks
    Small blocks: 0 KB 0 blks
    Holding blocks: 192 KB 1 blks
    Free Small blocks: 0 KB
    Free Ordinary blocks: 27823 KB
    Total in use: 37325 KB 57%
    Total free: 27823 KB 43%
    Total size: 65148 KB
Memory accounted for:
    Total accounted: 30327 KB
    memPoolAlloc calls: 1588821210
    memPoolFree calls: 1588232248
File descriptor usage for squid:
    Maximum number of file descriptors: 1024
    Largest file desc currently in use: 265
    Number of file desc currently in use: 254
    Files queued for open: 0
    Available number of file descriptors: 770
    Reserved number of file descriptors: 100
    Store Disk files open: 1
Internal Data Structures:
    182373 StoreEntries
      1713 StoreEntries with MemObjects
      1700 Hot Object Cache Items
    182281 on-disk objects
Received on Fri Apr 04 2003 - 10:45:51 MST