linux 内存分析 java 堆外内存

imconnector@linux:~/im_connector/imconnector> free -m
             total       used       free     shared    buffers     cached
Mem:         48213      34798      13414          0        199       1659
-/+ buffers/cache:      32939      15274
Swap:        32773          0      32773
imconnector@linux:~/im_connector/imconnector> cat /proc/meminfo
MemTotal:     49370468 kB
MemFree:      13740904 kB
Buffers:        204388 kB
Cached:        1699468 kB
SwapCached:          0 kB
Active:       14522300 kB
Inactive:      1360796 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     49370468 kB
LowFree:      13740904 kB
SwapTotal:    33559744 kB
SwapFree:     33559744 kB
Dirty:             244 kB
Writeback:           0 kB
AnonPages:    13977080 kB
Mapped:          28972 kB
Slab:          6409820 kB
CommitLimit:  58244976 kB
Committed_AS: 14219420 kB
PageTables:      29408 kB
VmallocTotal: 34359738367 kB
VmallocUsed:    290636 kB
VmallocChunk: 34359447695 kB
HugePages_Total:     0
HugePages_Free:      0
HugePages_Rsvd:      0
Hugepagesize:     2048 kB
imconnector@linux:~/im_connector/imconnector>