命令可用选项
➜ ~ jstat -options
-class
-compiler
-gc
-gccapacity
-gccause
-gcmetacapacity
-gcnew
-gcnewcapacity
-gcold
-gcoldcapacity
-gcutil
-printcompilation
查看
➜ ~ jstat -gcutil 65007 500 7
S0 S1 E O M CCS YGC YGCT FGC FGCT GCT
0.00 81.25 59.60 89.21 93.54 87.75 97 0.369 4 0.257 0.626
0.00 81.25 64.72 89.21 93.54 87.75 97 0.369 4 0.257 0.626
0.00 81.25 64.94 89.21 93.54 87.75 97 0.369 4 0.257 0.626
0.00 81.25 66.43 89.21 93.54 87.75 97 0.369 4 0.257 0.626
0.00 81.25 66.65 89.21 93.54 87.75 97 0.369 4 0.257 0.626
0.00 81.25 68.67 89.21 93.54 87.75 97 0.369 4 0.257 0.626
0.00 81.25 69.26 89.21 93.54 87.75 97 0.369 4 0.257 0.626
帮助信息
➜ jstat -help
Usage: jstat -help|-options
jstat -<option> [-t] [-h<lines>] <vmid> [<interval> [<count>]]
Definitions:
<option> An option reported by the -options option
<vmid> Virtual Machine Identifier. A vmid takes the following form:
<lvmid>[@<hostname>[:<port>]]
Where <lvmid> is the local vm identifier for the target
Java virtual machine, typically a process id; <hostname> is
the name of the host running the target Java virtual machine;
and <port> is the port number for the rmiregistry on the
target host. See the jvmstat documentation for a more complete
description of the Virtual Machine Identifier.
<lines> Number of samples between header lines.
<interval> Sampling interval. The following forms are allowed:
<n>["ms"|"s"]
Where <n> is an integer and the suffix specifies the units as
milliseconds("ms") or seconds("s"). The default units are "ms".
<count> Number of samples to take before terminating.
-J<flag> Pass <flag> directly to the runtime system.
