Here's a hs_err file after a crash I had yesterday. We turned off some
things in our code without restarting and the crashes have virtually
stopped but we do still get the off one here and there where the
application has not been restarted, could be that the problem lingers
and builds up in time,
wrote:
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
Taylan,
On 3/15/2010 10:19 AM, Taylan Develioglu wrote:
The cause for the crashes was in our own application code, we're
currently investigating the exact reason.
Yeah, I'd like to second Chuck's question: was it native code
, Taylan Develioglu wrote:
Hi Carl, thanks for the suggestion. I am going to try jvm 1.6.07
regardless of what I said before.
Funny coincidence, I tried the ibm jvm as well and ran into a similar
issue (part of our ssl implementation uses sun specific libraries).
On Thu, 2010-03-11 at 12:38
Changing to JIO didn't help, the silent crashes continue.
I'm changing kernel versions now.
On Fri, 2010-03-05 at 10:45 +0100, Taylan Develioglu wrote:
It's performing rather poorly performance wise, compared to the apr
connector. The number of threads required to handle the requests has
gone
a different kernel did not help either...
On Thu, 2010-03-11 at 11:37 +0100, Taylan Develioglu wrote:
Changing to JIO didn't help, the silent crashes continue.
I'm changing kernel versions now.
On Fri, 2010-03-05 at 10:45 +0100, Taylan Develioglu wrote:
It's performing rather poorly
,
Carl
- Original Message -
From: Taylan Develioglu tdevelio...@ebuddy.com
To: Tomcat Users List users@tomcat.apache.org
Sent: Thursday, March 11, 2010 6:13 AM
Subject: Re: jvm exits without trace
a different kernel did not help either...
On Thu, 2010-03-11 at 11:37 +0100
.
On Tue, 2010-03-09 at 19:29 +0100, André Warnier wrote:
Taylan Develioglu wrote:
Chuck, if that is true how can we explain I see only 637 busy threads on
a server that is serving 2172 clients ?
Woaw ! can you give us your trick ?
If every connection requires its own thread
The switch is from APR to JIO. SSL practically doesn't get used.
Almost all pages served are jsp or java, very little static files are
served and keep-alive is on.
where peak busy-threads used to be ~50 with APR, now it has become ~200
with JIO.
Here are the connector definitions for reference
Chuck, if that is true how can we explain I see only 637 busy threads on
a server that is serving 2172 clients ?
If every connection requires its own thread there should be 2172
threads.
On Tue, 2010-03-09 at 16:40 +0100, Caldarale, Charles R wrote:
From: Taylan Develioglu [mailto:tdevelio
Pid, that would assume we had a working 1.6.10 version before that we
replaced.
We've run 1.6.10 upwards succesfully for a very long time. So I don't
see the point in doing this.
On Wed, 2010-03-03 at 12:00 +0100, Pid wrote:
On 03/03/2010 09:11, Taylan Develioglu wrote:
Downgrading
wrote:
On 05/03/2010 08:41, Taylan Develioglu wrote:
Pid, that would assume we had a working 1.6.10 version before that we
replaced.
That it would.
We've run 1.6.10 upwards succesfully for a very long time. So I don't
see the point in doing this.
I must have missed that.
How
-
From: Taylan Develioglu tdevelio...@ebuddy.com
To: Tomcat Users List users@tomcat.apache.org
Sent: Wednesday, February 24, 2010 8:31 AM
Subject: Re: jvm exits without trace
Hello Carl,
The failures we've seen are in anywhere between 8 hours to a week of
runtime. Most of them
Schultz wrote:
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
Taylan,
On 2/24/2010 8:31 AM, Taylan Develioglu wrote:
We have also had failures with hotspot error files (hs_err) present, and
the cause specified was indeed SIGSEGV indicating a page fault. But I
don't know if the two
that (doesn't fix the problem).
On Thu, 2010-02-25 at 22:38 +0100, Christopher Schultz wrote:
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Hash: SHA1
Taylann,
On 2/24/2010 8:31 AM, Taylan Develioglu wrote:
Most memory is commited to tomcat, where a 24G machine would have 18G
allocated to heap, 128M
for some reason I keep calling you chuck... I hope I'm not offending
anyone :O
On Fri, 2010-02-26 at 13:55 +0100, Taylan Develioglu wrote:
Chuck I am aware.
A SIGSEGV is a signal sent by the kernel. Not a violation itsself.
A sigsegv is sent when an invalid memory access is attempted
Hi,
I have jvm's, running tomcat and our application, exiting mysteriously,
and was wondering if anyone could give me some advice on how to debug
this thing.
There is nothing in catalina.out, nor our application logs, and no
hotspot error file. GC log looks normal. No trace in system logs.
I am
/ssl/private/something.key
SSLCACertificateFile=/etc/ssl/certs/ca.crt/
On Wed, 2010-02-24 at 10:23 +0100, Taylan Develioglu wrote:
Hi,
I have jvm's, running tomcat and our application, exiting mysteriously,
and was wondering if anyone could give me some advice on how to debug
$//')/6))M
JAVA_PERM_SIZE=128M
JAVA_STCK_SIZE=128K
EDEN_SIZE is 1/6th of total heap.
And I said there was nothing in the system logs.
But you get a couple of points for trying.
On Wed, 2010-02-24 at 10:44 +0100, Pid wrote:
On 24/02/2010 09:36, Taylan Develioglu wrote:
I thought I'd add
5.0 that synchronize their clock using clock slew (ntpdate) and
decreased the ntpdate frequency to see if that helps. ((as you can tell
I'm getting a bit desperate)
On Wed, 2010-02-24 at 11:28 +0100, Konstantin Kolinko wrote:
2010/2/24 Taylan Develioglu tdevelio...@ebuddy.com:
Hi,
I have
the additional apps (the primary app is always used, the remaining
apps are used sporatically.)
How does this compare to what you are experiencing?
Thanks,
Carl
- Original Message -
From: Taylan Develioglu tdevelio...@ebuddy.com
To: Tomcat Users List users@tomcat.apache.org; p
It's possible,
I'm going to try an earlier jvm first. u16 was the previous one running
production, will try moving back to u16.
If that fails removing APR is the next thing to try out.
After that I'm going to try beating the dev team with a stick (I know
you're reading this!).
This is
I'll be sure to post an update if u16 resolves it. Or any other progress
for that matter.
In the meantime don't be shy either :)
On Wed, 2010-02-24 at 14:52 +0100, Carl wrote:
Taylan,
The failures we've seen are in anywhere between 8 hours to a week of
runtime.
The timing of the
Skimmed quickly through your post there while working, so forgive me if
this is irrelevant.
CLOSE_WAIT is a state where the connection has been closed on the tcp/ip
level, but the application (in this case java) has not closed the socket
descriptor yet.
As a coincidence we just fixed this very
Funny,
according to the documentation there exists no connectionTimeout
attribute for the apr connector.
Setting the value to '0' could mean all sorts of behavior, no way to
know for sure short of checking the code. (it could mean the connector
will not wait for the uri line at all)
I can't
, Charles R wrote:
From: Taylan Develioglu [mailto:tdevelio...@ebuddy.com]
Subject: Re: CPU usage with APR and connectionTimeout impact
according to the documentation there exists no connectionTimeout
attribute for the apr connector.
Which documentation is that? Note that the HTTP connector
and it pre-compiles all of its code before it runs each script
For starters, I'd point out the jsp page compiler does this as well...
Then redirect the person to this thread to get lynched. (seriously,
aside from the lynching this is a good idea)
Possibly IE writes to the socket buffer in seperate steps for header
info and post parameters. This would cause the data to be sent out in
seperate packets if nagle's alg. is off.
Caldarale, Charles R wrote:
From: Christopher Schultz [mailto:ch...@christopherschultz.net]
Subject: Re: tomcat
Schultz wrote:
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
Taylan,
On 3/6/2009 4:05 AM, Taylan Develioglu wrote:
James, thank you very much.
I suspected IE to be guilty because it was happening only with IE clients.
Chris, I guess we don't need to try and reproduce this anymore now we
know
Christopher Schultz wrote:
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Taylan,
No, you'd need to modify the source. It's not particularly useful in
most scenarios to intentionally stall an HTTP conversation, so it's not
a built-in feature :)
No, I'm saying that you should send
Hi Andre,
I meant to stop writing, not closing the socket. Poor choice of words,
apologies.
André Warnier wrote:
Taylan Develioglu wrote:
Christopher Schultz wrote:
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
Taylan,
No, you'd need to modify the source. It's not particularly useful
, Taylan Develioglu wrote:
I always hold this as a ground rule:
Increase heapsize as much as possible as long as:
My rule has always been to run with the smallest heap you can get away
with. We ran our main production app in 64MB of heap (the default for
our platform) for 4 years before we got
I would like to correct this, it seems to only happen with IE6/7.. maybe
old firefox 2.0
It happens with different clients indeed.
-
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For additional commands,
Guys, I've been following this thread for a while now, but doesn't
Jmeter already do what you're trying to accomplish here?
I've used jmeter's proxy to record and replay http requests/responses
before with success.
Or am I missing something here?
Here's a link to some instructions :
terminated abnormally
From: Taylan Develioglu [mailto:tdevelio...@ebuddy.com]
Subject: Re: Fatal error: Cleaner terminated abnormally
By trapping the exit call using security manager we hope to prevent
Tomcat from closing down on a cleaner termination.
This is not likely to work, since
We're trying a workaround now.
By trapping the exit call using security manager we hope to prevent
Tomcat from closing down on a cleaner termination.
Not sure what the side effects would be to keep running after a cleaner
terminates (any idea). Keeping fingers crossed.
I forgot to say thanks
This is bad news, but it was a longshot to begin with.
I submitted a bug report which is under review now.
and apologies for the name mixup. Chuck is obviously a much prettier name :)
Caldarale, Charles R wrote:
From: Taylan Develioglu [mailto:tdevelio...@ebuddy.com]
Subject: Re: Fatal
Hi Guys,
Our application is a servlet running in a container in Tomcat
standalone. It uses the following NIO connector definition:
Connector port=80
protocol=org.apache.coyote.http11.Http11NioProtocol
connectionTimeout=65000 keepAliveTimeout=1
maxKeepAliveRequests=1000
using native/apr ?
As always, any comment is appreciated.
- Taylan
-Original Message-
From: Caldarale, Charles R [mailto:chuck.caldar...@unisys.com]
Sent: dinsdag 17 februari 2009 16:36
To: Tomcat Users List
Subject: RE: Fatal error: Cleaner terminated abnormally
From: Taylan Develioglu
Yes, 64-bit hotspot server vm.
-Original Message-
From: Mark Thomas [mailto:ma...@apache.org]
Sent: dinsdag 17 februari 2009 16:23
To: Tomcat Users List
Subject: Re: Fatal error: Cleaner terminated abnormally
Taylan Develioglu wrote:
Following the gc trail, it looks like an oom
I found bug 4938372, but it didn't seem related to me at the time.
There's a post dated 2007, from Alan Bateman, indicating they'd try
putting the fix in a java 6 update.
I'll submit a bug report and in the meanwhile explore other options such
as native/apr then.
-Original Message-
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