RE: [squid-users] Memory keeps on decreasing

-----Original Message-----
From: Zabrina Mohamad
Sent: Monday, April 17, 2006 2:30 PM
To: 'Henrik Nordstrom'
Subject: RE: [squid-users] Memory keeps on decreasing

Hi Henrik,
Since we have 2GB of memory, so thinking it will be a waste, that;s why we put the cache_mem to 512MB. Do you see any implication to this?
By the way, with the 2 X 25GB cache dir and 512 for cache_mem , is it correct to say that memory reserved for squid alone is already 1GB? Please correct if it's a wrong assumption. and if you don't you mind, could you please explain on how should I read the cache mgr output below. My concern is on the memory and cache. Which value should I monitor the most, and what are the threshold that I should be aware of, before any problem arise.

Thank you so much for your help.

Cache information for squid:
        Request Hit Ratios: 5min: 48.2%, 60min: 37.0%
        Byte Hit Ratios: 5min: 20.6%, 60min: 3.6%
        Request Memory Hit Ratios: 5min: 46.3%, 60min: 7.9%
        Request Disk Hit Ratios: 5min: 50.4%, 60min: 21.3%
        Storage Swap size: 1747992 KB
        Storage Mem size: 4904 KB
        Mean Object Size: 29.06 KB
Memory usage for squid via mallinfo():
        Total space in arena: 14004 KB
        Ordinary blocks: 13732 KB 242 blks
        Small blocks: 0 KB 0 blks
        Holding blocks: 1228 KB 2 blks
        Free Small blocks: 0 KB
        Free Ordinary blocks: 271 KB
        Total in use: 14960 KB 98%
        Total free: 271 KB 2%
        Total size: 15232 KB
Memory accounted for:
        Total accounted: 10330 KB
        memPoolAlloc calls: 3322760
        memPoolFree calls: 3116790

***************************************************************************************
The total output of cache manager:
Connection information for squid:
        Number of clients accessing cache: 18
        Number of HTTP requests received: 17120
        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: 45.5
        Average ICP messages per minute since start: 0.0
        Select loop called: 922342 times, 24.480 ms avg
Cache information for squid:
        Request Hit Ratios: 5min: 48.2%, 60min: 37.0%
        Byte Hit Ratios: 5min: 20.6%, 60min: 3.6%
        Request Memory Hit Ratios: 5min: 46.3%, 60min: 7.9%
        Request Disk Hit Ratios: 5min: 50.4%, 60min: 21.3%
        Storage Swap size: 1747992 KB
        Storage Mem size: 4904 KB
        Mean Object Size: 29.06 KB
        Requests given to unlinkd: 296
Median Service Times (seconds) 5 min 60 min:
        HTTP Requests (All): 0.25890 1.24267
        Cache Misses: 8.22659 4.54239
        Cache Hits: 0.00379 0.00463
        Near Hits: 7.79421 4.30363
        Not-Modified Replies: 0.00000 0.00091
        DNS Lookups: 0.00000 0.00000
        ICP Queries: 0.00000 0.00000
Resource usage for squid:
        UP Time: 22579.102 seconds
        CPU Time: 30.487 seconds
        CPU Usage: 0.14%
        CPU Usage, 5 minute avg: 0.08%
        CPU Usage, 60 minute avg: 0.16%
        Process Data Segment Size via sbrk(): 14004 KB
        Maximum Resident Size: 0 KB
        Page faults with physical i/o: 0
Memory usage for squid via mallinfo():
        Total space in arena: 14004 KB
        Ordinary blocks: 13732 KB 242 blks
        Small blocks: 0 KB 0 blks
        Holding blocks: 1228 KB 2 blks
        Free Small blocks: 0 KB
        Free Ordinary blocks: 271 KB
        Total in use: 14960 KB 98%
        Total free: 271 KB 2%
        Total size: 15232 KB
Memory accounted for:
        Total accounted: 10330 KB
        memPoolAlloc calls: 3322760
        memPoolFree calls: 3116790
File descriptor usage for squid:
        Maximum number of file descriptors: 1024
        Largest file desc currently in use: 21
        Number of file desc currently in use: 18
        Files queued for open: 0
        Available number of file descriptors: 1006
        Reserved number of file descriptors: 100
        Store Disk files open: 0
Internal Data Structures:
         60218 StoreEntries
          1051 StoreEntries with MemObjects
          1049 Hot Object Cache Items
         60159 on-disk objects

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Received on Mon Apr 17 2006 - 02:06:34 MDT