[root@aliyun ~]# jps
    1476 WrapperSimpleApp
    27788 halo-latest.jar
    25245 Jps
    [root@aliyun ~]#
    [root@aliyun ~]# jmap -heap 27788
    Attaching to process ID 27788, please wait…
    Debugger attached successfully.
    Server compiler detected.
    JVM version is 25.181-b13

    using thread-local object allocation.
    Mark Sweep Compact GC

    Heap Configuration:
    MinHeapFreeRatio = 40
    MaxHeapFreeRatio = 70
    MaxHeapSize = 268435456 (256.0MB)
    NewSize = 89456640 (85.3125MB)
    MaxNewSize = 89456640 (85.3125MB)
    OldSize = 178978816 (170.6875MB)
    NewRatio = 2
    SurvivorRatio = 8
    MetaspaceSize = 21807104 (20.796875MB)
    CompressedClassSpaceSize = 1073741824 (1024.0MB)
    MaxMetaspaceSize = 17592186044415 MB
    G1HeapRegionSize = 0 (0.0MB)

    Heap Usage:
    New Generation (Eden + 1 Survivor Space):
    capacity = 80543744 (76.8125MB)
    used = 43017784 (41.02495574951172MB)
    free = 37525960 (35.78754425048828MB)
    53.40921822556448% used
    Eden Space:
    capacity = 71630848 (68.3125MB)
    used = 38657384 (36.866554260253906MB)
    free = 32973464 (31.445945739746094MB)
    53.967508523701966% used
    From Space:
    capacity = 8912896 (8.5MB)
    used = 4360400 (4.1584014892578125MB)
    free = 4552496 (4.3415985107421875MB)
    48.922370461856616% used
    To Space:
    capacity = 8912896 (8.5MB)
    used = 0 (0.0MB)
    free = 8912896 (8.5MB)
    0.0% used
    tenured generation:
    capacity = 178978816 (170.6875MB)
    used = 48757456 (46.49873352050781MB)
    free = 130221360 (124.18876647949219MB)
    27.242026229517577% used

    32843 interned Strings occupying 3294488 bytes.