Slide 39
Slide 39 text
検証 (メモリの情報を取得)
$ /tmp/jattach $(basename $(ls -1 /tmp/hsperfdata_scalardb/*)) jcmd "GC.heap_info"
Connected to remote JVM
JVM response code = 0
def new generation total 122368K, used 78283K [0x0000000369e00000, 0x00000003722c0000, 0x00000004dbea0000)
eden space 108800K, 71% used [0x0000000369e00000, 0x000000036ea72ff0, 0x0000000370840000)
from space 13568K, 0% used [0x0000000370840000, 0x0000000370840000, 0x0000000371580000)
to space 13568K, 0% used [0x0000000371580000, 0x0000000371580000, 0x00000003722c0000)
tenured generation total 271744K, used 25951K [0x00000004dbea0000, 0x00000004ec800000, 0x00000007c0000000)
the space 271744K, 9% used [0x00000004dbea0000, 0x00000004dd7f7c48, 0x00000004dd7f7e00,
0x00000004ec800000)
Metaspace used 40442K, capacity 41092K, committed 41472K, reserved 1085440K
class space used 4642K, capacity 4828K, committed 4864K, reserved 1048576K