Parsing GC log for Thread Stops
Sujit.Das at cognizant.com
Sujit.Das at cognizant.com
Tue Oct 27 09:49:10 PDT 2009
Hi,
We are using JDK jdk1.6.0_14 on Solaris 10 platform. I am having difficulty in associating timestamp to thread stop time. Please refer the log snippet below.
There are two occurence of thread stops. The first is at 18:06 with thread stop time value of 0.0336887 seconds. The second thread stop time, of value 3.4217414 seconds, has no associated timestamp. My question - what is the associated timestamp for second thread stop? Is it 18:06 or 18:09?
2009-10-26T18:06:19.008-0500: 3534.051: [GC Before GC:
Statistics for BinaryTreeDictionary:
------------------------------------
Total Free Space: 385976134
Max Chunk Size: 385976134
Number of Blocks: 1
Av. Block Size: 385976134
Tree Height: 1
Before GC:
Statistics for BinaryTreeDictionary:
------------------------------------
Total Free Space: 0
Max Chunk Size: 0
Number of Blocks: 0
Tree Height: 0
3534.051: [ParNew
Desired survivor size 218431488 bytes, new threshold 4 (max 4)
- age 1: 4747768 bytes, 4747768 total
- age 2: 8973152 bytes, 13720920 total
- age 3: 16305200 bytes, 30026120 total
- age 4: 1050896 bytes, 31077016 total
: 4300016K->43704K(4693376K), 0.0265603 secs] 5380449K->1124137K(8789376K)After GC:
Statistics for BinaryTreeDictionary:
------------------------------------
Total Free Space: 385976134
Max Chunk Size: 385976134
Number of Blocks: 1
Av. Block Size: 385976134
Tree Height: 1
After GC:
Statistics for BinaryTreeDictionary:
------------------------------------
Total Free Space: 0
Max Chunk Size: 0
Number of Blocks: 0
Tree Height: 0
, 0.0272833 secs] [Times: user=0.36 sys=0.01, real=0.03 secs]
Heap after GC invocations=213 (full 2):
par new generation total 4693376K, used 43704K [0xfffffd7dbf600000, 0xfffffd7ef7e00000, 0xfffffd7ef7e00000)
eden space 4266752K, 0% used [0xfffffd7dbf600000, 0xfffffd7dbf600000, 0xfffffd7ec3cc0000)
from space 426624K, 10% used [0xfffffd7ec3cc0000, 0xfffffd7ec676e090, 0xfffffd7eddd60000)
to space 426624K, 0% used [0xfffffd7eddd60000, 0xfffffd7eddd60000, 0xfffffd7ef7e00000)
concurrent mark-sweep generation total 4096000K, used 1080433K [0xfffffd7ef7e00000, 0xfffffd7ff1e00000, 0xfffffd7ff1e00000)
concurrent-mark-sweep perm gen total 131072K, used 62140K [0xfffffd7ff1e00000, 0xfffffd7ff9e00000, 0xfffffd7ff9e00000)
}
Total time for which application threads were stopped: 0.0336887 seconds
3878 ...class name-method name...
3879 ...class name-method name...
3880 ...class name-method name...
3881 ...class name-method name...
3882 ...class name-method name...
Application time: 163.9563827 seconds
3867 ...class name-method name...
3868 ...class name-method name...
Before GC:
Statistics for BinaryTreeDictionary:
------------------------------------
Total Free Space: 385976134
Max Chunk Size: 385976134
Number of Blocks: 1
Av. Block Size: 385976134
Tree Height: 1
Before GC:
Statistics for BinaryTreeDictionary:
------------------------------------
Total Free Space: 0
Max Chunk Size: 0
Number of Blocks: 0
Tree Height: 0
After GC:
Statistics for BinaryTreeDictionary:
------------------------------------
Total Free Space: 385976134
Max Chunk Size: 385976134
Number of Blocks: 1
Av. Block Size: 385976134
Tree Height: 1
After GC:
Statistics for BinaryTreeDictionary:
------------------------------------
Total Free Space: 0
Max Chunk Size: 0
Number of Blocks: 0
Tree Height: 0
Total time for which application threads were stopped: 3.4217414 seconds
Application time: 0.3801325 seconds
{Heap before GC invocations=213 (full 2):
par new generation total 4693376K, used 1247868K [0xfffffd7dbf600000, 0xfffffd7ef7e00000, 0xfffffd7ef7e00000)
eden space 4266752K, 28% used [0xfffffd7dbf600000, 0xfffffd7e08df1070, 0xfffffd7ec3cc0000)
from space 426624K, 10% used [0xfffffd7ec3cc0000, 0xfffffd7ec676e090, 0xfffffd7eddd60000)
to space 426624K, 0% used [0xfffffd7eddd60000, 0xfffffd7eddd60000, 0xfffffd7ef7e00000)
concurrent mark-sweep generation total 4096000K, used 1080433K [0xfffffd7ef7e00000, 0xfffffd7ff1e00000, 0xfffffd7ff1e00000)
concurrent-mark-sweep perm gen total 131072K, used 62142K [0xfffffd7ff1e00000, 0xfffffd7ff9e00000, 0xfffffd7ff9e00000)
2009-10-26T18:09:45.836-0500: 3740.882: [Full GC Before GC:
Statistics for BinaryTreeDictionary:
------------------------------------
...
...
Thanks,
Sujit
This e-mail and any files transmitted with it are for the sole use of the intended recipient(s) and may contain confidential and privileged information.
If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message.
Any unauthorized review, use, disclosure, dissemination, forwarding, printing or copying of this email or any action taken in reliance on this e-mail is strictly prohibited and may be unlawful.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mail.openjdk.java.net/pipermail/hotspot-gc-use/attachments/20091027/11ab6508/attachment.html
More information about the hotspot-gc-use
mailing list