How to relate the nid in Java Thread dump with pstack output?

Posted on 2008-06-25
Medium Priority
Last Modified: 2012-06-27
I'm confusing on How to relate the nid in Java thread dump with pstack putput.
I need to find which Thread consuming CPU much.so got information by executing command:prstat -L
but when i look at thread dump , each thread  has nid value. but output of prstat -L has lwp id(which is in decimal)
I heard we can get the nid information pstack. but i could not able to find out from pstack.

Please let if anybody have on this or any other alternative ways..

basically I need to figaure out what thread is doing..(which is consuming high COU usage)

"Thread-598" daemon prio=10 tid=0x01b48410 nid=0x3f2 runnable [0x7a581000..0x7a581988]
        at java.net.SocketInputStream.socketRead0(Native Method)
        at java.net.SocketInputStream.read(SocketInputStream.java:129)
        at java.io.BufferedInputStream.fill(BufferedInputStream.java:218)
        at java.io.BufferedInputStream.read(BufferedInputStream.java:235)
        - locked <0xc32f18a8> (a java.io.BufferedInputStream)
        at java.io.FilterInputStream.read(FilterInputStream.java:66)
        at java.io.PushbackInputStream.read(PushbackInputStream.java:120)
        at org.apache.commons.net.io.FromNetASCIIInputStream.__read(FromNetASCIIInputStream.java:114)
        at org.apache.commons.net.io.FromNetASCIIInputStream.read(FromNetASCIIInputStream.java:209)
        at java.io.BufferedInputStream.fill(BufferedInputStream.java:218)
        at java.io.BufferedInputStream.read(BufferedInputStream.java:235)
        - locked <0xc32fbff0> (a org.apache.commons.net.telnet.TelnetInputStream)
        at org.apache.commons.net.telnet.TelnetInputStream.__read(TelnetInputStream.java:140)
        at org.apache.commons.net.telnet.TelnetInputStream.run(TelnetInputStream.java:464)
        at java.lang.Thread.run(Thread.java:595)

-----------------  lwp# 12 / thread# 11  --------------------
 ff31f8bc lwp_sema_wait (8be81e60)
 ff3696f4 _park    (8be81e60, ff38c000, 0, 8be81d98, 19abba0, 0) + 114
 ff3690f0 _swtch   (8be81d98, ffffffff, ff38c000, 5, 1000, fe435d20) + 158
 ff36c888 sema_wait (fe4408e8, ff397864, 5000, 10000, 534d, 1) + bc
 fdf5f170 __1cVcheck_pending_signals6Fi_i_ (1, fe431098, fe430f80, 159da8, fe3dc000, a) + 254
 fdf56430 __1cTsignal_thread_entry6FpnKJavaThread_pnGThread__v_ (9c00, 159da8, 7c00, fe3dc000, 8be81a88, 8be81aac) + 2e4
 fdedb8c8 __1cKJavaThreadDrun6M_v_ (159da8, fe435020, 781c, 0, 7800, 9400) + 2b0
 fe27ced8 __1cG_start6Fpv_0_ (159da8, 5277, fe3dc000, 0, 5874, 5800) + 208
 ff37b11c _thread_start (159da8, 0, 0, 0, 0, 0) + 40
Question by:java_tes
  • 2
LVL 92

Expert Comment

ID: 21871569
don't think you can, that nid is just an address, not the actual id.


Author Comment

ID: 21878248
could you please tell me how to know which thread is consuming more CPU and what it is doing?
LVL 92

Accepted Solution

objects earned 2000 total points
ID: 21879805

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