Linux view the method of a particular thread or program with a higher CPU consumption of a process

At present our monitoring can find the process that consumes the higher CPU (the threshold is 3 CPU), through monitoring we can find the process number that consumes the higher CPU;

With the process number PID, we can display the CPU resource consumption of each thread in the process via the Top–h–p <pid> command on Linux.

Then, through the Threadump command, you can print out the invocation of a thread at some point in the application JVM, and with the thread number we can find the program called by the threads.

Other:

The Jrcmd command can also be used to view threadump and process execution threads, but the command is a new command for JRockit 5.0, and under WLS81 users we do not have permission to execute, but can contact the middleware to help execute.

1. Go to the Jrockit/bin directory
2. Hit./jrcmd enter to see the PID number of all currently executing Java processes
3./jrcmd [PID] help Enter, you will see the operation supported by the specified Java process
4./jrcmd [PID] print_threads > Xxxfile, can print all thread stack tracks in the current Java process to the specified file

Example:

[email protected] wls]$ Top

PID USER PR NI VIRT RES SHR S%cpu%MEM time+ COMMAND

228961 wls81 0 714m 637m 1804 S 755.7 0.2 383:24.53 java

[[email protected] wls]$ top-h-P 228961

top-13:37:01 up 156 days, 16:11, 8 users, load average:14.24, 13.82, 12.88

tasks:140 Total, running, 117 sleeping, 0 stopped, 0 zombie

Cpu (s): 25.6%us, 1.6%sy, 0.0%ni, 72.6%id, 0.0%wa, 0.0%hi, 0.2%si, 0.0%st

mem:264120292k Total, 217896772k used, 46223520k free, 4547804k buffers

swap:3145720k Total, 464k used, 3145256k free, 153619224k cached

   PID user      pr  ni  virt  res  SHR S%cpu%mem     time+  command                                                                      

229077 wls81 0 714m 637m 1804 R 32.6 0.2 7:11.79 executethread:

229093 wls81 0 714m 637m 1804 R 32.6 0.2 23:41.47 executethread:

229073 wls81     15   0  714m 637m 1804 R 32.2  0.2   2:24.30 Execut ethread:                                                               

229076 wls81     15   0  714m 637m 1804 R 32.2  0.2   2:22.75 Execut ethread:                                                                

229078 wls81 0 714m 637m 1804 R 32.2 0.2 7:21.38 executethread:

229082 wls81 0 714m 637m 1804 R 32.2 0.2 10:14.74 executethread:

229084 wls81 0 714m 637m 1804 R 32.2 0.2 8:43.72 executethread:

229085 wls81 0 714m 637m 1804 R 32.2 0.2 12:45.62 executethread:

229087 wls81 0 714m 637m 1804 R 32.2 0.2 19:11.79 executethread:

229089 wls81 0 714m 637m 1804 R 32.2 0.2 23:22.67 executethread:

229075 wls81 0 714m 637m 1804 R 31.9 0.2 5:06.52 executethread:

229088 wls81 0 714m 637m 1804 R 31.9 0.2 13:19.55 executethread:

229090 wls81 0 714m 637m 1804 R 31.9 0.2 23:53.55 executethread:

229092 wls81 0 714m 637m 1804 R 31.9 0.2 24:20.10 executethread:

229094 wls81 0 714m 637m 1804 R 31.9 0.2 33:25.41 executethread:

229095 wls81 0 714m 637m 1804 R 31.9 0.2 33:41.20 executethread:

229096 wls81 0 714m 637m 1804 R 31.9 0.2 36:22.72 executethread:

229081 wls81 0 714m 637m 1804 R 31.6 0.2 7:28.80 executethread:

229083 wls81 0 714m 637m 1804 R 31.6 0.2 11:05.48 executethread:

229086 wls81 0 714m 637m 1804 R 31.6 0.2 11:40.36 executethread:

229091 wls81 0 714m 637m 1804 R 31.6 0.2 17:53.92 executethread:

229097 wls81 0 714m 637m 1804 R 31.6 0.2 32:41.28 executethread:

229079 wls81     15   0  714m 637m 1804 R 31.2  0.2   7:33.44 Execut ethread:                                                                

229080 wls81     15   0  714m 637m 1804 s  1.3  0.2   0:14.13 E xecutethread:                                                               

228963 wls81     15   0  714m 637m 1804 s  0.7  0.2   0:13.44 ( GC Main thread                                                              

229070 wls81 0 714m 637m 1804 S 0.7 0.2 0:05.97 executethread:

229664 wls81 0 714m 637m 1804 S 0.7 0.2 0:08.69 pool-1-thread-7

Threadump Information Fragment:

229083:

"Executethread: ' for queue: ' Weblogic.kernel.Default '" id=44 idx=0xd4 tid=229083 prio=5 alive, daemon

At Java/util/hashmap.get (hashmap.java:319)

At Com/paic/abbs/biz/service/common/impl/hardcodeserviceimpl.getstring (hardcodeserviceimpl.java:115)

At com/paic/abbs/biz/service/util/impl/utilservicesimpl.isexpected (utilservicesimpl.java:45)

At Com/paic/abbs/biz/service/common/impl/abbsinternetserviceimpl.policyissuing (AbbsInternetServiceImpl.java : 3156)

At Com/paic/abbs/biz/service/common/impl/abbsinternetserviceimpl.procrequest (abbsinternetserviceimpl.java:218)

At Com/paic/abbs/biz/service/common/impl/abbsinternetserviceimpl.handlerequest (AbbsInternetServiceImpl.java:122 )

At Com/paic/abbs/biz/service/common/impl/abbsinternetservice_gwxgqo_eoimpl.handlerequest (AbbsInternetService_ gwxgqo_eoimpl.java:262)

At Sun/reflect/generatedmethodaccessor287.invoke (ljava/lang/object;[ Ljava/lang/object;) ljava/lang/object; (Unknown Source)

At Sun/reflect/delegatingmethodaccessorimpl.invoke (Delegatingmethoda

Linux view the method of a particular thread or program with a higher CPU consumption of a process