> 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
