查看Tomcat内存实际占用
ps -ef | grep port 使用ps查找出具体tomcat的pid，然后使用 jmap -heap pid就可以看出整个对内存的使用情况了：
[tomcat@hch_test_web_1_24 home]$ jmap -heap 23710
Attaching to process ID 23710, please wait...
Debugger attached successfully.
Server compiler detected.
JVM version is 24.55-b03
using thread-local object allocation.
Parallel GC with 18 thread(s)
Heap Configuration:
MinHeapFreeRatio = 40
MaxHeapFreeRatio = 70
MaxHeapSize = 2147483648 (2048.0MB)
NewSize = 1310720 (1.25MB)
MaxNewSize = 17592186044415 MB
OldSize = 5439488 (5.1875MB)
NewRatio = 2
SurvivorRatio = 8
PermSize = 536870912 (512.0MB)
MaxPermSize = 2147483648 (2048.0MB)
G1HeapRegionSize = 0 (0.0MB)
Heap Usage:
PS Young Generation
Eden Space:
capacity = 535298048 (510.5MB)
used = 309708648 (295.3611831665039MB)
free = 225589400 (215.1388168334961MB)
57.857234704506155% used
From Space:
capacity = 89128960 (85.0MB)
used = 19648888 (18.73863983154297MB)
free = 69480072 (66.26136016845703MB)
22.04545862534467% used
To Space:
capacity = 85458944 (81.5MB)
used = 0 (0.0MB)
free = 85458944 (81.5MB)
0.0% used
PS Old Generation
capacity = 1431830528 (1365.5MB)
used = 311125312 (296.71221923828125MB)
free = 1120705216 (1068.7877807617188MB)
21.729199504817373% used
PS Perm Generation
capacity = 536870912 (512.0MB)
used = 212898400 (203.03573608398438MB)
free = 323972512 (308.9642639160156MB)
39.6554172039032% used
34822 interned Strings occupying 3865248 bytes.
Tag标签:「内存 tomcat」更新时间:「2021-11-03 20:23:34」阅读次数:「831」