[squid-users] Impressions of 3.2.1

> On 7/09/2012 2:54 a.m., Daniel Beschorner wrote:
> > The shared memory cache is harder to follow in its memory use than in 3.1,
> > am I right that the "cached" value of the "free" output is somehow related
> > due to shared mem?
> Where are you spotting this?

I'm trying to get the feel of tuning/monitoring the cache_mem parameter in 3.2 SMP.
Little real mem used, don't know exactly where to look right.

config: linux 64bit, workers 2, no disk cache, 3GB shared mem cache:

Cache information for squid:
        Hits as % of all requests: 5min: 11.3%, 60min: 13.0%
        Hits as % of bytes sent: 5min: 2.1%, 60min: 1.4%
        Memory hits as % of hit requests: 5min: 55.3%, 60min: 52.8%
        Disk hits as % of hit requests: 5min: 25.2%, 60min: 12.7% (?without disk cache?)
        Storage Swap size: 0 KB
        Storage Swap capacity: 0.0% used, 0.0% free
        Storage Mem size: 2997120 KB
        Storage Mem capacity: 95.3% used, 4.7% free
        Mean Object Size: 0.00 KB
        Requests given to unlinkd: 0
Resource usage for squid:
        UP Time: 63270.597 seconds
        CPU Time: 2165.255 seconds
        CPU Usage: 3.42%
        CPU Usage, 5 minute avg: 12.62%
        CPU Usage, 60 minute avg: 11.93%
        Process Data Segment Size via sbrk(): 117432 KB
        Maximum Resident Size: 6111728 KB
        Page faults with physical i/o: 0
Memory usage for squid via mallinfo():
        Total space in arena: 117696 KB
        Ordinary blocks: 105553 KB 3734 blks
        Small blocks: 0 KB 0 blks
        Holding blocks: 2816 KB 8 blks
        Free Small blocks: 0 KB
        Free Ordinary blocks: 12143 KB
        Total in use: 12143 KB 10%
        Total free: 12143 KB 10%
        Total size: 120512 KB
Memory accounted for:
        Total accounted: 61336 KB 51%
        memPool accounted: 61336 KB 51%
        memPool unaccounted: 59176 KB 49%
        memPoolAlloc calls: 495209534
        memPoolFree calls: 497771963
Internal Data Structures:
          5509 StoreEntries
          5509 StoreEntries with MemObjects
         93660 Hot Object Cache Items
             0 on-disk objects

free output: (only 300M "normal" mem used? but also only 1,4GB in "cached", if shared mem is accounted there?)

             total used free shared buffers cached
Mem: 3926544 1841484 2085060 0 103584 1434028
-/+ buffers/cache: 303872 3622672
Swap: 2095100 0 2095100

top output:

  PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
 8118 nobody 20 0 3167m 724m 676m S 7 18.9 18:02.57 squid
 8119 nobody 20 0 3189m 783m 713m S 5 20.4 18:44.31 squid

Thank you!
Daniel
Received on Fri Sep 07 2012 - 08:50:23 MDT