RE: GC allocation failure

[Sanka, Ambica]

Thank you for letting me know. Will post it there.




-Original Message-
From: Coty Sutherland [mailto:csuth...@apache.org] 
Sent: Thursday, January 04, 2018 11:14 AM
To: Tomcat Developers List 
Subject: Re: GC allocation failure

This is a question for the users list, not the developers list. From
https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Ftomcat.apache.org%2Flists.html%23tomcat-dev&data=02%7C01%7CASanka%40atpco.net%7C00fa95a791ad4eb5f6b708d5538e4199%7C25a0fe74b1cb46ee81f58cbb7b5ca144%7C1%7C0%7C636506792808426936&sdata=WIAoswgW2wPKAJsG6sFUygbNPdv%2BzgPG5UUnfPwmheM%3D&reserved=0:

"This development list is only for discussion of changes to the Apache Tomcat 
source code and related issues. Other questions will be ignored."

On Thu, Jan 4, 2018 at 11:05 AM, Sanka, Ambica  wrote:
> I am seeing below highlighted errors in native_err logs in all my tomcat 
> applications. I also increased memory for the VM from 4GB to 8GB. Still 
> seeing those. When do we get that errors?
> I am reading online that when program asks for memory and java cannot give, 
> that's when we see them. Please suggest.
> Java HotSpot(TM) 64-Bit Server VM (25.20-b23) for linux-amd64 JRE 
> (1.8.0_20-b26), built on Jul 30 2014 13:13:52 by "java_re" with gcc 
> 4.3.0 20080428 (Red Hat 4.3.0-8)
> Memory: 4k page, physical 8061572k(2564740k free), swap 
> 4063228k(4063228k free) CommandLine flags: 
> -XX:+HeapDumpOnOutOfMemoryError 
> -XX:HeapDumpPath=/opt/apache/ancillariesmonitoring/logs/ 
> -XX:InitialHeapSize=128985152 -XX:MaxHeapSize=268435456 -XX:+PrintGC 
> -XX:+PrintGCTimeStamps -XX:+UseCompressedClassPointers 
> -XX:+UseCompressedOops -XX:+UseParallelGC
> 3.203: [GC (Allocation Failure)  31744K->6311K(121856K), 0.0097261 
> secs]
> 3.578: [GC (Allocation Failure)  38055K->12368K(121856K), 0.0089875 
> secs]
> 3.756: [GC (Allocation Failure)  44112K->19589K(121856K), 0.0100339 
> secs]
> 3.897: [GC (Allocation Failure)  51333K->25872K(153600K), 0.0092326 
> secs]
> 4.172: [GC (Allocation Failure)  89360K->38878K(153600K), 0.0152940 
> secs]
> 4.417: [GC (Allocation Failure)  102366K->50311K(148480K), 0.0148816 
> secs]
> 4.594: [GC (Allocation Failure)  95367K->49903K(151040K), 0.0197327 
> secs]
> 4.765: [GC (Allocation Failure)  94959K->50213K(148992K), 0.0149008 
> secs]
> 4.946: [GC (Allocation Failure)  96293K->52257K(150528K), 0.0172634 
> secs]
> 5.129: [GC (Allocation Failure)  98337K->53118K(151040K), 0.0139426 
> secs]
> 5.313: [GC (Allocation Failure)  102270K->53234K(152064K), 0.0122307 
> secs]
> 5.498: [GC (Allocation Failure)  102386K->53579K(153088K), 0.0166336 
> secs]
> 5.655: [GC (Allocation Failure)  104779K->54486K(153600K), 0.0161735 
> secs]
> 6.885: [GC (Allocation Failure)  105686K->51523K(153600K), 0.0123126 
> secs]

In the spirit of helpfulness, see the first result for googling "GC (Allocation 
Failure)",
https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fstackoverflow.com%2Fquestions%2F28342736%2Fjava-gc-allocation-failure&data=02%7C01%7CASanka%40atpco.net%7C00fa95a791ad4eb5f6b708d5538e4199%7C25a0fe74b1cb46ee81f58cbb7b5ca144%7C1%7C0%7C636506792808426936&sdata=SWT4Q0CbrmnU%2Fzd6Q9gGpOm%2FiqLMi5l2DQSMTveq9PU%3D&reserved=0
;)

If you have further questions, direct them to the users list please.

>
> Thanks
> Ambica.

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Re: GC allocation failure

[Coty Sutherland]

This is a question for the users list, not the developers list. From
http://tomcat.apache.org/lists.html#tomcat-dev:

"This development list is only for discussion of changes to the Apache
Tomcat source code and related issues. Other questions will be
ignored."

On Thu, Jan 4, 2018 at 11:05 AM, Sanka, Ambica  wrote:
> I am seeing below highlighted errors in native_err logs in all my tomcat 
> applications. I also increased memory for the VM from 4GB to 8GB. Still 
> seeing those. When do we get that errors?
> I am reading online that when program asks for memory and java cannot give, 
> that's when we see them. Please suggest.
> Java HotSpot(TM) 64-Bit Server VM (25.20-b23) for linux-amd64 JRE 
> (1.8.0_20-b26), built on Jul 30 2014 13:13:52 by "java_re" with gcc 4.3.0 
> 20080428 (Red Hat 4.3.0-8)
> Memory: 4k page, physical 8061572k(2564740k free), swap 4063228k(4063228k 
> free)
> CommandLine flags: -XX:+HeapDumpOnOutOfMemoryError 
> -XX:HeapDumpPath=/opt/apache/ancillariesmonitoring/logs/ 
> -XX:InitialHeapSize=128985152 -XX:MaxHeapSize=268435456 -XX:+PrintGC 
> -XX:+PrintGCTimeStamps -XX:+UseCompressedClassPointers -XX:+UseCompressedOops 
> -XX:+UseParallelGC
> 3.203: [GC (Allocation Failure)  31744K->6311K(121856K), 0.0097261 secs]
> 3.578: [GC (Allocation Failure)  38055K->12368K(121856K), 0.0089875 secs]
> 3.756: [GC (Allocation Failure)  44112K->19589K(121856K), 0.0100339 secs]
> 3.897: [GC (Allocation Failure)  51333K->25872K(153600K), 0.0092326 secs]
> 4.172: [GC (Allocation Failure)  89360K->38878K(153600K), 0.0152940 secs]
> 4.417: [GC (Allocation Failure)  102366K->50311K(148480K), 0.0148816 secs]
> 4.594: [GC (Allocation Failure)  95367K->49903K(151040K), 0.0197327 secs]
> 4.765: [GC (Allocation Failure)  94959K->50213K(148992K), 0.0149008 secs]
> 4.946: [GC (Allocation Failure)  96293K->52257K(150528K), 0.0172634 secs]
> 5.129: [GC (Allocation Failure)  98337K->53118K(151040K), 0.0139426 secs]
> 5.313: [GC (Allocation Failure)  102270K->53234K(152064K), 0.0122307 secs]
> 5.498: [GC (Allocation Failure)  102386K->53579K(153088K), 0.0166336 secs]
> 5.655: [GC (Allocation Failure)  104779K->54486K(153600K), 0.0161735 secs]
> 6.885: [GC (Allocation Failure)  105686K->51523K(153600K), 0.0123126 secs]

In the spirit of helpfulness, see the first result for googling "GC
(Allocation Failure)",
https://stackoverflow.com/questions/28342736/java-gc-allocation-failure
;)

If you have further questions, direct them to the users list please.

>
> Thanks
> Ambica.

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