Discussion:
precompile JSPs failure issue - Tomcat community
Rathore, Rajendra
2018-11-01 09:21:09 UTC
Permalink
Hi Team,

We have precompileJSPs tests that include compilation of around 4000 jsp files. After upgrading to Tomcat 8.5.34 from Tomcat 8.5.32 we are facing an Error: java.lang.OutOfMemoryError: unable to create new native thread

The machines on which tests were executed have 16GB of RAM, out of which around 13GB was free.
The precompileJSPs tests were executed on Tomcat 8.5.34 by setting ANT_OPTS from -Xmx4096m to -Xmx10240m, But Still the result was OutOfMemoryError.

However, We successfully tested precompileJSPs tests for Tomcat 8.5.32 with ANT_OPTS as -Xmx384m

Can someone please have a look into this issue?


Thanks and Regards,
Rajendra Rathore
9922701491
Mark Thomas
2018-11-01 09:33:40 UTC
Permalink
Post by Rathore, Rajendra
Hi Team,
 
We have precompileJSPs tests that include compilation of around 4000 jsp
files. After upgrading to Tomcat *8.5.34* from Tomcat *8.5.32* we are
facing an *Error:*/java.lang.OutOfMemoryError: unable to create new
native thread /
 
The machines on which tests were executed have *16GB* of RAM, out of
which around *13GB* was free.
The precompileJSPs tests were executed on Tomcat *8.5.34* by setting
ANT_OPTS from -Xmx4096m to -Xmx10240m, But Still the result was
/OutOfMemoryError./
/ /
However, We successfully tested precompileJSPs tests for Tomcat *8.5.32
*with ANT_OPTS as -Xmx384m
 
Can someone please have a look into this issue?
Have you looked at the change log for the changes between 8.5.32 and
8.5.34 that might be relevant?

Have you tried testing with 8.5.33 to narrow down the version in which
the issue first appears?

Mark

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Guang Chao
2018-11-01 10:10:43 UTC
Permalink
Post by Mark Thomas
Post by Rathore, Rajendra
Hi Team,
We have precompileJSPs tests that include compilation of around 4000 jsp
files. After upgrading to Tomcat *8.5.34* from Tomcat *8.5.32* we are
facing an *Error:*/java.lang.OutOfMemoryError: unable to create new
native thread /
The machines on which tests were executed have *16GB* of RAM, out of
which around *13GB* was free.
The precompileJSPs tests were executed on Tomcat *8.5.34* by setting
ANT_OPTS from -Xmx4096m to -Xmx10240m, But Still the result was
/OutOfMemoryError./
/ /
However, We successfully tested precompileJSPs tests for Tomcat *8.5.32
*with ANT_OPTS as -Xmx384m
Can someone please have a look into this issue?
Have you looked at the change log for the changes between 8.5.32 and
8.5.34 that might be relevant?
It could be changelog in 8.5.33
https://bz.apache.org/bugzilla/show_bug.cgi?id=53011
https://bz.apache.org/bugzilla/show_bug.cgi?id=53492
Post by Mark Thomas
Have you tried testing with 8.5.33 to narrow down the version in which
the issue first appears?
Mark
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Rathore, Rajendra
2018-11-01 11:13:32 UTC
Permalink
Hi Mark,

I am suspecting the same in 8.5.33 tomcat, do you still won't me to check it on tomcat 8.5.33?

Thanks and Regards,
Rajendra Rathore
9922701491

-----Original Message-----
From: Guang Chao <***@gmail.com>
Sent: 01 November 2018 03:41 PM
To: Tomcat Users List <***@tomcat.apache.org>
Subject: Re: precompile JSPs failure issue - Tomcat community
Post by Mark Thomas
Post by Rathore, Rajendra
Hi Team,
We have precompileJSPs tests that include compilation of around 4000
jsp files. After upgrading to Tomcat *8.5.34* from Tomcat *8.5.32*
we are facing an *Error:*/java.lang.OutOfMemoryError: unable to
create new native thread /
The machines on which tests were executed have *16GB* of RAM, out of
which around *13GB* was free.
The precompileJSPs tests were executed on Tomcat *8.5.34* by setting
ANT_OPTS from -Xmx4096m to -Xmx10240m, But Still the result was
/OutOfMemoryError./
/ /
However, We successfully tested precompileJSPs tests for Tomcat
*8.5.32 *with ANT_OPTS as -Xmx384m
Can someone please have a look into this issue?
Have you looked at the change log for the changes between 8.5.32 and
8.5.34 that might be relevant?
It could be changelog in 8.5.33
https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fbz.apache.org%2Fbugzilla%2Fshow_bug.cgi%3Fid%3D53011&amp;data=02%7C01%7Crarathore%40ptc.com%7Cb925903f163440c0623908d63fe25fc4%7Cb9921086ff774d0d828acb3381f678e2%7C0%7C0%7C636766638847501834&amp;sdata=0pWCHhvlD%2FBKThN%2FvGEbfDE1%2F4SSXHYOaQIx028%2Fk9Q%3D&amp;reserved=0
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Post by Mark Thomas
Have you tried testing with 8.5.33 to narrow down the version in which
the issue first appears?
Mark
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Mark Thomas
2018-11-01 12:31:56 UTC
Permalink
Post by Rathore, Rajendra
Hi Mark,
I am suspecting the same in 8.5.33 tomcat, do you still won't me to check it on tomcat 8.5.33?
I'm simply providing some pointers to help you figure out what the
problem is. Which, if any, of those pointers you choose to follow is up
to you.

Mark
Post by Rathore, Rajendra
Thanks and Regards,
Rajendra Rathore
9922701491
-----Original Message-----
Sent: 01 November 2018 03:41 PM
Subject: Re: precompile JSPs failure issue - Tomcat community
Post by Mark Thomas
Post by Rathore, Rajendra
Hi Team,
We have precompileJSPs tests that include compilation of around 4000
jsp files. After upgrading to Tomcat *8.5.34* from Tomcat *8.5.32*
we are facing an *Error:*/java.lang.OutOfMemoryError: unable to
create new native thread /
The machines on which tests were executed have *16GB* of RAM, out of
which around *13GB* was free.
The precompileJSPs tests were executed on Tomcat *8.5.34* by setting
ANT_OPTS from -Xmx4096m to -Xmx10240m, But Still the result was
/OutOfMemoryError./
/ /
However, We successfully tested precompileJSPs tests for Tomcat
*8.5.32 *with ANT_OPTS as -Xmx384m
Can someone please have a look into this issue?
Have you looked at the change log for the changes between 8.5.32 and
8.5.34 that might be relevant?
It could be changelog in 8.5.33
https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fbz.apache.org%2Fbugzilla%2Fshow_bug.cgi%3Fid%3D53011&amp;data=02%7C01%7Crarathore%40ptc.com%7Cb925903f163440c0623908d63fe25fc4%7Cb9921086ff774d0d828acb3381f678e2%7C0%7C0%7C636766638847501834&amp;sdata=0pWCHhvlD%2FBKThN%2FvGEbfDE1%2F4SSXHYOaQIx028%2Fk9Q%3D&amp;reserved=0
https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fbz.apache.org%2Fbugzilla%2Fshow_bug.cgi%3Fid%3D53492&amp;data=02%7C01%7Crarathore%40ptc.com%7Cb925903f163440c0623908d63fe25fc4%7Cb9921086ff774d0d828acb3381f678e2%7C0%7C0%7C636766638847501834&amp;sdata=jzH4WEv0RTY%2BvJYmGvNIKS%2FFM6OSO4Kc8ZFRX4hmt2s%3D&amp;reserved=0
Post by Mark Thomas
Have you tried testing with 8.5.33 to narrow down the version in which
the issue first appears?
Mark
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Guang Chao
2018-11-01 12:37:27 UTC
Permalink
Post by Rathore, Rajendra
Hi Mark,
I am suspecting the same in 8.5.33 tomcat, do you still won't me to check
it on tomcat 8.5.33?
How about increasing your perm memory?
Post by Rathore, Rajendra
Thanks and Regards,
Rajendra Rathore
9922701491
-----Original Message-----
Sent: 01 November 2018 03:41 PM
Subject: Re: precompile JSPs failure issue - Tomcat community
Post by Mark Thomas
Post by Rathore, Rajendra
Hi Team,
We have precompileJSPs tests that include compilation of around 4000
jsp files. After upgrading to Tomcat *8.5.34* from Tomcat *8.5.32*
we are facing an *Error:*/java.lang.OutOfMemoryError: unable to
create new native thread /
The machines on which tests were executed have *16GB* of RAM, out of
which around *13GB* was free.
The precompileJSPs tests were executed on Tomcat *8.5.34* by setting
ANT_OPTS from -Xmx4096m to -Xmx10240m, But Still the result was
/OutOfMemoryError./
/ /
However, We successfully tested precompileJSPs tests for Tomcat
*8.5.32 *with ANT_OPTS as -Xmx384m
Can someone please have a look into this issue?
Have you looked at the change log for the changes between 8.5.32 and
8.5.34 that might be relevant?
It could be changelog in 8.5.33
https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fbz.apache.org%2Fbugzilla%2Fshow_bug.cgi%3Fid%3D53011&amp;data=02%7C01%7Crarathore%40ptc.com%7Cb925903f163440c0623908d63fe25fc4%7Cb9921086ff774d0d828acb3381f678e2%7C0%7C0%7C636766638847501834&amp;sdata=0pWCHhvlD%2FBKThN%2FvGEbfDE1%2F4SSXHYOaQIx028%2Fk9Q%3D&amp;reserved=0
https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fbz.apache.org%2Fbugzilla%2Fshow_bug.cgi%3Fid%3D53492&amp;data=02%7C01%7Crarathore%40ptc.com%7Cb925903f163440c0623908d63fe25fc4%7Cb9921086ff774d0d828acb3381f678e2%7C0%7C0%7C636766638847501834&amp;sdata=jzH4WEv0RTY%2BvJYmGvNIKS%2FFM6OSO4Kc8ZFRX4hmt2s%3D&amp;reserved=0
Post by Mark Thomas
Have you tried testing with 8.5.33 to narrow down the version in which
the issue first appears?
Mark
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Rathore, Rajendra
2018-11-01 12:39:56 UTC
Permalink
Hi Chao,

We already tried it and it still failing.

Thanks and Regards,
Rajendra Rathore
9922701491

-----Original Message-----
From: Guang Chao <***@gmail.com>
Sent: 01 November 2018 06:07 PM
To: Tomcat Users List <***@tomcat.apache.org>
Subject: Re: precompile JSPs failure issue - Tomcat community
Post by Rathore, Rajendra
Hi Mark,
I am suspecting the same in 8.5.33 tomcat, do you still won't me to
check it on tomcat 8.5.33?
How about increasing your perm memory?
Post by Rathore, Rajendra
Thanks and Regards,
Rajendra Rathore
9922701491
-----Original Message-----
Sent: 01 November 2018 03:41 PM
Subject: Re: precompile JSPs failure issue - Tomcat community
Post by Mark Thomas
Post by Rathore, Rajendra
Hi Team,
We have precompileJSPs tests that include compilation of around
4000 jsp files. After upgrading to Tomcat *8.5.34* from Tomcat
unable to create new native thread /
The machines on which tests were executed have *16GB* of RAM, out
of which around *13GB* was free.
The precompileJSPs tests were executed on Tomcat *8.5.34* by
setting ANT_OPTS from -Xmx4096m to -Xmx10240m, But Still the
result was /OutOfMemoryError./
/ /
However, We successfully tested precompileJSPs tests for Tomcat
*8.5.32 *with ANT_OPTS as -Xmx384m
Can someone please have a look into this issue?
Have you looked at the change log for the changes between 8.5.32 and
8.5.34 that might be relevant?
It could be changelog in 8.5.33
https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fbz.ap
ache.org%2Fbugzilla%2Fshow_bug.cgi%3Fid%3D53011&amp;data=02%7C01%7Crar
athore%40ptc.com%7Cc0bce30fc877421ebd6808d63ff6f1f2%7Cb9921086ff774d0d
828acb3381f678e2%7C0%7C0%7C636766727188877636&amp;sdata=diEmx1WNaWPvH%
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athore%40ptc.com%7Cc0bce30fc877421ebd6808d63ff6f1f2%7Cb9921086ff774d0d
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Post by Mark Thomas
Have you tried testing with 8.5.33 to narrow down the version in
which the issue first appears?
Mark
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Rathore, Rajendra
2018-11-02 09:57:22 UTC
Permalink
Hi Mark,

I tried with tomcat 8.5.33 and face the same issue, I logged a bug also
https://bz.apache.org/bugzilla/show_bug.cgi?id=62879

Please let me know how should I proceed here?

Thanks and Regards,
Rajendra Rathore
9922701491

-----Original Message-----
From: Rathore, Rajendra <***@ptc.com>
Sent: 01 November 2018 06:10 PM
To: Tomcat Users List <***@tomcat.apache.org>
Subject: RE: precompile JSPs failure issue - Tomcat community

Hi Chao,

We already tried it and it still failing.

Thanks and Regards,
Rajendra Rathore
9922701491

-----Original Message-----
From: Guang Chao <***@gmail.com>
Sent: 01 November 2018 06:07 PM
To: Tomcat Users List <***@tomcat.apache.org>
Subject: Re: precompile JSPs failure issue - Tomcat community
Post by Rathore, Rajendra
Hi Mark,
I am suspecting the same in 8.5.33 tomcat, do you still won't me to
check it on tomcat 8.5.33?
How about increasing your perm memory?
Post by Rathore, Rajendra
Thanks and Regards,
Rajendra Rathore
9922701491
-----Original Message-----
Sent: 01 November 2018 03:41 PM
Subject: Re: precompile JSPs failure issue - Tomcat community
Post by Mark Thomas
Post by Rathore, Rajendra
Hi Team,
We have precompileJSPs tests that include compilation of around
4000 jsp files. After upgrading to Tomcat *8.5.34* from Tomcat
unable to create new native thread /
The machines on which tests were executed have *16GB* of RAM, out
of which around *13GB* was free.
The precompileJSPs tests were executed on Tomcat *8.5.34* by
setting ANT_OPTS from -Xmx4096m to -Xmx10240m, But Still the
result was /OutOfMemoryError./
/ /
However, We successfully tested precompileJSPs tests for Tomcat
*8.5.32 *with ANT_OPTS as -Xmx384m
Can someone please have a look into this issue?
Have you looked at the change log for the changes between 8.5.32 and
8.5.34 that might be relevant?
It could be changelog in 8.5.33
https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fbz.ap
ache.org%2Fbugzilla%2Fshow_bug.cgi%3Fid%3D53011&amp;data=02%7C01%7Crar
athore%40ptc.com%7Cc0bce30fc877421ebd6808d63ff6f1f2%7Cb9921086ff774d0d
828acb3381f678e2%7C0%7C0%7C636766727188877636&amp;sdata=diEmx1WNaWPvH%
2FGMd8Ex%2B4AgZCaGxcC6fez5UD%2FEF1c%3D&amp;reserved=0
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athore%40ptc.com%7Cc0bce30fc877421ebd6808d63ff6f1f2%7Cb9921086ff774d0d
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3zTAx4oht2cjUHfuDoNCWoOHKfkrs%3D&amp;reserved=0
Post by Mark Thomas
Have you tried testing with 8.5.33 to narrow down the version in
which the issue first appears?
Mark
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Rainer Jung
2018-11-02 10:20:09 UTC
Permalink
Post by Rathore, Rajendra
Hi Mark,
I tried with tomcat 8.5.33 and face the same issue, I logged a bug also
https://bz.apache.org/bugzilla/show_bug.cgi?id=62879
Please let me know how should I proceed here?
Thanks and Regards,
Rajendra Rathore
9922701491
-----Original Message-----
Sent: 01 November 2018 06:10 PM
Subject: RE: precompile JSPs failure issue - Tomcat community
Hi Chao,
We already tried it and it still failing.
Thanks and Regards,
Rajendra Rathore
9922701491
-----Original Message-----
Sent: 01 November 2018 06:07 PM
Subject: Re: precompile JSPs failure issue - Tomcat community
Post by Rathore, Rajendra
Hi Mark,
I am suspecting the same in 8.5.33 tomcat, do you still won't me to
check it on tomcat 8.5.33?
How about increasing your perm memory?
Post by Rathore, Rajendra
Thanks and Regards,
Rajendra Rathore
9922701491
-----Original Message-----
Sent: 01 November 2018 03:41 PM
Subject: Re: precompile JSPs failure issue - Tomcat community
Post by Mark Thomas
Post by Rathore, Rajendra
Hi Team,
We have precompileJSPs tests that include compilation of around
4000 jsp files. After upgrading to Tomcat *8.5.34* from Tomcat
unable to create new native thread /
The machines on which tests were executed have *16GB* of RAM, out
of which around *13GB* was free.
The precompileJSPs tests were executed on Tomcat *8.5.34* by
setting ANT_OPTS from -Xmx4096m to -Xmx10240m, But Still the
result was /OutOfMemoryError./
/ /
However, We successfully tested precompileJSPs tests for Tomcat
*8.5.32 *with ANT_OPTS as -Xmx384m
Can someone please have a look into this issue?
Have you looked at the change log for the changes between 8.5.32 and
8.5.34 that might be relevant?
It could be changelog in 8.5.33
https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fbz.ap
ache.org%2Fbugzilla%2Fshow_bug.cgi%3Fid%3D53011&amp;data=02%7C01%7Crar
athore%40ptc.com%7Cc0bce30fc877421ebd6808d63ff6f1f2%7Cb9921086ff774d0d
828acb3381f678e2%7C0%7C0%7C636766727188877636&amp;sdata=diEmx1WNaWPvH%
2FGMd8Ex%2B4AgZCaGxcC6fez5UD%2FEF1c%3D&amp;reserved=0
https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fbz.ap
ache.org%2Fbugzilla%2Fshow_bug.cgi%3Fid%3D53492&amp;data=02%7C01%7Crar
athore%40ptc.com%7Cc0bce30fc877421ebd6808d63ff6f1f2%7Cb9921086ff774d0d
828acb3381f678e2%7C0%7C0%7C636766727188877636&amp;sdata=rl1N7m5upe4E7A
3zTAx4oht2cjUHfuDoNCWoOHKfkrs%3D&amp;reserved=0
Post by Mark Thomas
Have you tried testing with 8.5.33 to narrow down the version in
which the issue first appears?
Mark
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m%7Cc0bce30fc877421ebd6808d63ff6f1f2%7Cb9921086ff774d0d828acb3381f678e
2%7C0%7C0%7C636766727188877636&amp;sdata=lEQmu2kFIquRsA5rAeVw17HYosy6O
03GGZvt6d6CWCA%3D&amp;reserved=0
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B KKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKCB  [ X ܚX KK[XZ[
\ \ ][ X ܚX P X ]
\X K ܙ B ܈Y][ۘ[ [X[  K[XZ[
\ \ Z[ X ]
\X K ܙ B
You can control the number of threads using -threadCount. By default the
number is equals to the number of cores the operating system show to the
JVM. You might want to use a smaller number to see whether that helps.

I suggest you also check your Linux system limits on processes per user.
That system limit on Linux in fact limits threads per user. So if such a
limit is set and your user has other processes with many threads
running, you might need to increase this limit.

In addition you can run your ant process with

strace -f -o /var/tmp/strace.out HERE_COMES_YOUR_ANT_COMMAND &

Then after you get the error, you can check the strace.out file for
system call errors. The file will be big, but most probably the error is
relatively close to the end.

Regards,

Rainer


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Rathore, Rajendra
2018-11-02 10:23:27 UTC
Permalink
Hi Rainer,

We never face this issue with tomcat 8.5.32 and from 8.5.33 it will causing the issue and it happen on both OS Window and Linux, it will be blocking for us because we are not able to update tomcat to latest on and it had some security issue fixed in it, please let me know how should I proceed from here.

Thanks and Regards,
Rajendra Rathore
9922701491

-----Original Message-----
From: Rainer Jung <***@kippdata.de>
Sent: 02 November 2018 03:50 PM
To: Tomcat Users List <***@tomcat.apache.org>; Rathore, Rajendra <***@ptc.com>
Subject: Re: precompile JSPs failure issue - Tomcat community
Post by Rathore, Rajendra
Hi Mark,
I tried with tomcat 8.5.33 and face the same issue, I logged a bug also
https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fbz.ap
ache.org%2Fbugzilla%2Fshow_bug.cgi%3Fid%3D62879&amp;data=02%7C01%7Crar
athore%40ptc.com%7C80d42185b225483c061508d640accfbb%7Cb9921086ff774d0d
828acb3381f678e2%7C0%7C0%7C636767508304565081&amp;sdata=FGguJAuq0y%2Ft
TMNTsd%2Fezc6yTbuOD5wxzlNWdYs8wFI%3D&amp;reserved=0
Please let me know how should I proceed here?
Thanks and Regards,
Rajendra Rathore
9922701491
-----Original Message-----
Sent: 01 November 2018 06:10 PM
Subject: RE: precompile JSPs failure issue - Tomcat community
Hi Chao,
We already tried it and it still failing.
Thanks and Regards,
Rajendra Rathore
9922701491
-----Original Message-----
Sent: 01 November 2018 06:07 PM
Subject: Re: precompile JSPs failure issue - Tomcat community
Post by Rathore, Rajendra
Hi Mark,
I am suspecting the same in 8.5.33 tomcat, do you still won't me to
check it on tomcat 8.5.33?
How about increasing your perm memory?
Post by Rathore, Rajendra
Thanks and Regards,
Rajendra Rathore
9922701491
-----Original Message-----
Sent: 01 November 2018 03:41 PM
Subject: Re: precompile JSPs failure issue - Tomcat community
Post by Mark Thomas
Post by Rathore, Rajendra
Hi Team,
We have precompileJSPs tests that include compilation of around
4000 jsp files. After upgrading to Tomcat *8.5.34* from Tomcat
unable to create new native thread /
The machines on which tests were executed have *16GB* of RAM, out
of which around *13GB* was free.
The precompileJSPs tests were executed on Tomcat *8.5.34* by
setting ANT_OPTS from -Xmx4096m to -Xmx10240m, But Still the result
was /OutOfMemoryError./
/ /
However, We successfully tested precompileJSPs tests for Tomcat
*8.5.32 *with ANT_OPTS as -Xmx384m
Can someone please have a look into this issue?
Have you looked at the change log for the changes between 8.5.32 and
8.5.34 that might be relevant?
It could be changelog in 8.5.33
https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fbz.a
p
ache.org%2Fbugzilla%2Fshow_bug.cgi%3Fid%3D53011&amp;data=02%7C01%7Cra
r
athore%40ptc.com%7Cc0bce30fc877421ebd6808d63ff6f1f2%7Cb9921086ff774d0
d
828acb3381f678e2%7C0%7C0%7C636766727188877636&amp;sdata=diEmx1WNaWPvH
%
2FGMd8Ex%2B4AgZCaGxcC6fez5UD%2FEF1c%3D&amp;reserved=0
https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fbz.a
p
ache.org%2Fbugzilla%2Fshow_bug.cgi%3Fid%3D53492&amp;data=02%7C01%7Cra
r
athore%40ptc.com%7Cc0bce30fc877421ebd6808d63ff6f1f2%7Cb9921086ff774d0
d
828acb3381f678e2%7C0%7C0%7C636766727188877636&amp;sdata=rl1N7m5upe4E7
A
3zTAx4oht2cjUHfuDoNCWoOHKfkrs%3D&amp;reserved=0
Post by Mark Thomas
Have you tried testing with 8.5.33 to narrow down the version in
which the issue first appears?
Mark
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e
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o
m%7Cc0bce30fc877421ebd6808d63ff6f1f2%7Cb9921086ff774d0d828acb3381f678
e
2%7C0%7C0%7C636766727188877636&amp;sdata=lEQmu2kFIquRsA5rAeVw17HYosy6
O
03GGZvt6d6CWCA%3D&amp;reserved=0
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<https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fjavad
evnotes.com%2Fjava-string-compare&amp;data=02%7C01%7Crarathore%40ptc.c
om%7C80d42185b225483c061508d640accfbb%7Cb9921086ff774d0d828acb3381f678
e2%7C0%7C0%7C636767508304565081&amp;sdata=Cx%2BDIalffZ3EcaSb7oPQVPx5sl
JFqdnMg8r2A10E6M8%3D&amp;reserved=0>
B KKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKCB  [ X ܚX KK[XZ[
\ \ ][ X ܚX P X ]
\X K ܙ B ܈Y][ۘ[ [X[  K[XZ[
\ \ Z[ X ]
\X K ܙ B
You can control the number of threads using -threadCount. By default the number is equals to the number of cores the operating system show to the JVM. You might want to use a smaller number to see whether that helps.

I suggest you also check your Linux system limits on processes per user.
That system limit on Linux in fact limits threads per user. So if such a limit is set and your user has other processes with many threads running, you might need to increase this limit.

In addition you can run your ant process with

strace -f -o /var/tmp/strace.out HERE_COMES_YOUR_ANT_COMMAND &

Then after you get the error, you can check the strace.out file for system call errors. The file will be big, but most probably the error is relatively close to the end.

Regards,

Rainer

B�KKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKCB��[��X��ܚX�KK[XZ[�\�\��][��X��ܚX�P�X�] �\X�K�ܙ�B��܈Y][ۘ[��[X[��K[
Rainer Jung
2018-11-02 10:30:04 UTC
Permalink
Post by Rathore, Rajendra
Hi Rainer,
We never face this issue with tomcat 8.5.32 and from 8.5.33 it will causing the issue and it happen on both OS Window and Linux, it will be blocking for us because we are not able to update tomcat to latest on and it had some security issue fixed in it, please let me know how should I proceed from here.
Others have already pointed you at

https://bz.apache.org/bugzilla/show_bug.cgi?id=53492

This introduced a new feature to JspC to make the compilation
multi-threaded. Before this change it was always done on only one thread.

The good: it will make the compilation of your many JSPs faster.

The bad: it seems to create a yet to understand new problem for you.

I suggest you follow the hints, that I gave in my previous mail.

Regards,

Rainer
Post by Rathore, Rajendra
Thanks and Regards,
Rajendra Rathore
9922701491
-----Original Message-----
Sent: 02 November 2018 03:50 PM
Subject: Re: precompile JSPs failure issue - Tomcat community
Post by Rathore, Rajendra
Hi Mark,
I tried with tomcat 8.5.33 and face the same issue, I logged a bug also
https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fbz.ap
ache.org%2Fbugzilla%2Fshow_bug.cgi%3Fid%3D62879&amp;data=02%7C01%7Crar
athore%40ptc.com%7C80d42185b225483c061508d640accfbb%7Cb9921086ff774d0d
828acb3381f678e2%7C0%7C0%7C636767508304565081&amp;sdata=FGguJAuq0y%2Ft
TMNTsd%2Fezc6yTbuOD5wxzlNWdYs8wFI%3D&amp;reserved=0
Please let me know how should I proceed here?
Thanks and Regards,
Rajendra Rathore
9922701491
-----Original Message-----
Sent: 01 November 2018 06:10 PM
Subject: RE: precompile JSPs failure issue - Tomcat community
Hi Chao,
We already tried it and it still failing.
Thanks and Regards,
Rajendra Rathore
9922701491
-----Original Message-----
Sent: 01 November 2018 06:07 PM
Subject: Re: precompile JSPs failure issue - Tomcat community
Post by Rathore, Rajendra
Hi Mark,
I am suspecting the same in 8.5.33 tomcat, do you still won't me to
check it on tomcat 8.5.33?
How about increasing your perm memory?
Post by Rathore, Rajendra
Thanks and Regards,
Rajendra Rathore
9922701491
-----Original Message-----
Sent: 01 November 2018 03:41 PM
Subject: Re: precompile JSPs failure issue - Tomcat community
Post by Mark Thomas
Post by Rathore, Rajendra
Hi Team,
We have precompileJSPs tests that include compilation of around
4000 jsp files. After upgrading to Tomcat *8.5.34* from Tomcat
unable to create new native thread /
The machines on which tests were executed have *16GB* of RAM, out
of which around *13GB* was free.
The precompileJSPs tests were executed on Tomcat *8.5.34* by
setting ANT_OPTS from -Xmx4096m to -Xmx10240m, But Still the result
was /OutOfMemoryError./
/ /
However, We successfully tested precompileJSPs tests for Tomcat
*8.5.32 *with ANT_OPTS as -Xmx384m
Can someone please have a look into this issue?
Have you looked at the change log for the changes between 8.5.32 and
8.5.34 that might be relevant?
It could be changelog in 8.5.33
https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fbz.a
p
ache.org%2Fbugzilla%2Fshow_bug.cgi%3Fid%3D53011&amp;data=02%7C01%7Cra
r
athore%40ptc.com%7Cc0bce30fc877421ebd6808d63ff6f1f2%7Cb9921086ff774d0
d
828acb3381f678e2%7C0%7C0%7C636766727188877636&amp;sdata=diEmx1WNaWPvH
%
2FGMd8Ex%2B4AgZCaGxcC6fez5UD%2FEF1c%3D&amp;reserved=0
https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fbz.a
p
ache.org%2Fbugzilla%2Fshow_bug.cgi%3Fid%3D53492&amp;data=02%7C01%7Cra
r
athore%40ptc.com%7Cc0bce30fc877421ebd6808d63ff6f1f2%7Cb9921086ff774d0
d
828acb3381f678e2%7C0%7C0%7C636766727188877636&amp;sdata=rl1N7m5upe4E7
A
3zTAx4oht2cjUHfuDoNCWoOHKfkrs%3D&amp;reserved=0
Post by Mark Thomas
Have you tried testing with 8.5.33 to narrow down the version in
which the issue first appears?
Mark
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e
vnotes.com%2Fjava-string-to-date&amp;data=02%7C01%7Crarathore%40ptc.c
o
m%7Cc0bce30fc877421ebd6808d63ff6f1f2%7Cb9921086ff774d0d828acb3381f678
e
2%7C0%7C0%7C636766727188877636&amp;sdata=lEQmu2kFIquRsA5rAeVw17HYosy6
O
03GGZvt6d6CWCA%3D&amp;reserved=0
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evnotes.com%2Fjava-string-compare&amp;data=02%7C01%7Crarathore%40ptc.c
om%7C80d42185b225483c061508d640accfbb%7Cb9921086ff774d0d828acb3381f678
e2%7C0%7C0%7C636767508304565081&amp;sdata=Cx%2BDIalffZ3EcaSb7oPQVPx5sl
JFqdnMg8r2A10E6M8%3D&amp;reserved=0>
B KKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKCB  [ X ܚX KK[XZ[
\ \ ][ X ܚX P X ]
\X K ܙ B ܈Y][ۘ[ [X[  K[XZ[
\ \ Z[ X ]
\X K ܙ B
You can control the number of threads using -threadCount. By default the number is equals to the number of cores the operating system show to the JVM. You might want to use a smaller number to see whether that helps.
I suggest you also check your Linux system limits on processes per user.
That system limit on Linux in fact limits threads per user. So if such a limit is set and your user has other processes with many threads running, you might need to increase this limit.
In addition you can run your ant process with
strace -f -o /var/tmp/strace.out HERE_COMES_YOUR_ANT_COMMAND &
Then after you get the error, you can check the strace.out file for system call errors. The file will be big, but most probably the error is relatively close to the end.
Regards,
Rainer
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Christopher Schultz
2018-11-02 13:18:16 UTC
Permalink
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

Rainer,
Post by Rainer Jung
You can control the number of threads using -threadCount. By
default the number is equals to the number of cores the operating
system show to the JVM.
x 2
Post by Rainer Jung
You might want to use a smaller number to see whether that helps.
I suggest you also check your Linux system limits on processes per
user. That system limit on Linux in fact limits threads per user.
So if such a limit is set and your user has other processes with
many threads running, you might need to increase this limit.
In addition you can run your ant process with
strace -f -o /var/tmp/strace.out HERE_COMES_YOUR_ANT_COMMAND &
Then after you get the error, you can check the strace.out file
for system call errors. The file will be big, but most probably the
error is relatively close to the end.
- -chris

-----BEGIN PGP SIGNATURE-----
Comment: Using GnuPG with Thunderbird - https://www.enigmail.net/

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=/xUp
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Rathore, Rajendra
2018-11-06 09:10:35 UTC
Permalink
Hi Rainer/Chris,

I tried below command, it also fails with same error,
Please find attached output of strace command, I am unable to found any help from that file or I might not have much idea about it, can you please check it and let me know your finding, mean while is there any way to run the jspc command in single thread model like 8.5.32 tomcat version.

Thanks and Regards,
Rajendra Rathore
9922701491

-----Original Message-----
From: Christopher Schultz <***@christopherschultz.net>
Sent: 02 November 2018 06:48 PM
To: ***@tomcat.apache.org
Subject: Re: precompile JSPs failure issue - Tomcat community

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

Rainer,
Post by Rainer Jung
You can control the number of threads using -threadCount. By default
the number is equals to the number of cores the operating system show
to the JVM.
x 2
Post by Rainer Jung
You might want to use a smaller number to see whether that helps.
I suggest you also check your Linux system limits on processes per
user. That system limit on Linux in fact limits threads per user.
So if such a limit is set and your user has other processes with many
threads running, you might need to increase this limit.
In addition you can run your ant process with
strace -f -o /var/tmp/strace.out HERE_COMES_YOUR_ANT_COMMAND &
Then after you get the error, you can check the strace.out file for
system call errors. The file will be big, but most probably the error
is relatively close to the end.
- -chris

-----BEGIN PGP SIGNATURE-----
Comment: Using GnuPG with Thunderbird - https://www.enigmail.net/

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=/xUp
-----END PGP SIGNATURE-----

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Rainer Jung
2018-11-06 11:20:32 UTC
Permalink
Post by Rathore, Rajendra
Hi Rainer/Chris,
I tried below command, it also fails with same error,
Please find attached output of strace command, I am unable to found any help from that file or I might not have much idea about it, can you please check it and let me know your finding, mean while is there any way to run the jspc command in single thread model like 8.5.32 tomcat version.
I see

10807 clone(child_stack=0x7f53af001fb0,
flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID,
parent_tidptr=0x7f53af0029d0, tls=0x7f53af002700,
child_tidptr=0x7f53af0029d0) = -1 EAGAIN (Resource temporarily unavailable)

I'm not sure, whether that is actualy the same error that you eported
originally "unable to create new native thread" or whether you now got a
different error logged?

The man pages for the clone() system call says:

EAGAIN Too many processes are already running; see fork(2)

and the fork() man page says:

EAGAIN fork() cannot allocate sufficient memory to copy the parent's
page tables and allocate a task structure for the child.

EAGAIN It was not possible to create a new process because the
caller's RLIMIT_NPROC resource limit was encountered. To exceed this
limit, the process must have either the CAP_SYS_ADMIN or the
CAP_SYS_RESOURCE capability.

So I would - as already mentioned - check you nproc limit (output of
"ulimit -u" and "ulimit -u -h") and I would also *reduce* the heap size
a lot.

Regards,

Rainer
Post by Rathore, Rajendra
Thanks and Regards,
Rajendra Rathore
9922701491
-----Original Message-----
Sent: 02 November 2018 06:48 PM
Subject: Re: precompile JSPs failure issue - Tomcat community
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Hash: SHA256
Rainer,
Post by Rainer Jung
You can control the number of threads using -threadCount. By default
the number is equals to the number of cores the operating system show
to the JVM.
x 2
Post by Rainer Jung
You might want to use a smaller number to see whether that helps.
I suggest you also check your Linux system limits on processes per
user. That system limit on Linux in fact limits threads per user.
So if such a limit is set and your user has other processes with many
threads running, you might need to increase this limit.
In addition you can run your ant process with
strace -f -o /var/tmp/strace.out HERE_COMES_YOUR_ANT_COMMAND &
Then after you get the error, you can check the strace.out file for
system call errors. The file will be big, but most probably the error
is relatively close to the end.
- -chris
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Christopher Schultz
2018-11-06 13:52:42 UTC
Permalink
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

Rajendra,
Post by Rathore, Rajendra
I tried below command, it also fails with same error,
Please find attached output of strace command, I am unable to
found any help from that file or I might not have much idea about
it, can you please check it and let me know your finding, mean
while is there any way to run the jspc command in single thread
model like 8.5.32 tomcat version.
Please post the exact ant target which is being executed, including
all various switches that are being applied -- either directly on jspc
itself, or on the JVM running ant (if you are not forking the JVM to
run jspc). I'm especially interested in:

a) the number of threads you have set
b) the stack size (per thread)

Also, please post the output of these commands:

$ ulimit -a

$ cat /proc/sys/kernel/threads-max

- -chris
Post by Rathore, Rajendra
-----Original Message----- From: Christopher Schultz
- Tomcat community
Rainer,
Post by Rainer Jung
You can control the number of threads using -threadCount. By
default the number is equals to the number of cores the operating
system show to the JVM.
x 2
Post by Rainer Jung
You might want to use a smaller number to see whether that
helps.
I suggest you also check your Linux system limits on processes
per user. That system limit on Linux in fact limits threads per
user. So if such a limit is set and your user has other processes
with many threads running, you might need to increase this
limit.
In addition you can run your ant process with
strace -f -o /var/tmp/strace.out HERE_COMES_YOUR_ANT_COMMAND &
Then after you get the error, you can check the strace.out file
for system call errors. The file will be big, but most probably
the error is relatively close to the end.
-chris
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