[squid-users] top reports twice memory as much as Total in mgr:mem

Hello,

In a 3.1.6 squid installation on a CentOS 5.5 x86 host with customized
kernel, top reports

VERT 19.8g, and RES 14g

while mgr:mem reports
Total Allocated 7.25g (96.4% of which is mem_node) high 7.27g, In Use
7.25g %alloc 99.957

In squid.conf, the following is explicitly configured(mem_pool is default):
cache_mem 7168 MB
maximum_object_size 51200 KB
maximum_object_size_in_memory 1024 KB

Probably memory leak. However, it is not reliably reproducible.
Anyway, a restart will return memory to OS.

Additionally, mgr reports negative values:

Memory usage for squid via mallinfo():
        Total space in arena: -1672772 KB
        Ordinary blocks: 1252818 KB 22892799 blks
        Small blocks: 0 KB 0 blks
        Holding blocks: 14400 KB 8 blks
        Free Small blocks: 0 KB
        Free Ordinary blocks: 1268713 KB
        Total in use: 1267218 KB -75%
        Total free: 1268713 KB -76%
        Total size: -1658372 KB
Memory accounted for:
        Total accounted: -882139 KB 53%
        memPool accounted: -882139 KB 53%
        memPool unaccounted: -776234 KB 47%
        memPoolAlloc calls: 30300656492
        memPoolFree calls: 30382011325

Thanks
kc
Received on Tue Oct 19 2010 - 09:19:55 MDT