Hi
I have the same problem and I could not solve. I have installed the version
apache-log4cxx-0.10.0. apr-1.3.6 and apr-util-1.3.8. in a Red Hat 5 x64
I tried with the patch 596934 and does not work.
When the program ends gives an exception
terminate called after throwing an instance of
'log4cxx::helpers::MutexException'
what(): Mutex exception: stat = 22
./tester.sh: line 71: 17226 Aborted
Is there any mutex access with PHP or just the SysV semaphores?
Under 5.0.41 I have having problems of CPU sitting at exactly 100% load
I traced this command:
mysql> SHOW MUTEX STATUS;
Which returned 1281006 lines, ending with:
+-------------+------+----------+
| File | Line | OS_waits |
+-------------+------+----------+
...
...
| buf0buf.c | 497 | 0 |
| buf0buf.c | 494 | 0 |
| buf0buf.c | 497 | 0 |
|
Hello i got a "problem" running apache as transparent proxy http...
I get in my log 'Cannot create mutex'... i dont really see apparent
trouble in
the way apache works... but something must be wrong....
Chris
The official User-To-User support forum of the Apache HTTP Server Project.
See for more info.
" from the digest:
[email protected]
We have a problem with some guys here that are entering datat into our
MySQL database. They complain about the impossibility to enter data at
the same time, that they lose all changes but I guess MySQL is managing
MUTEX access to data...Or should I put any instruction like (LOCK) when
they modify data ?
What solution do you think is best, and how do you explain this problem
? I'd express the
I am looking at the code, learning how it works and could it be used
in my projects.
While looking, I saw something and reported issue (340 - debug object
sends extra crlf).
Is this the right way to go with reporting issues?
I noticed anothers issue: uninitialized mutex use in createSharedObjects
which is called in InitServer before vmInit, where mutex are initialized.
Solution be to move mutex
Can anyone give me some insight on this error in the httpd error log.
I have searched the web extensively and no one seems to have a definative answer.
[Tue Jun 07 14:01:46 2005] [emerg] (45)Deadlock situation detected/avoided: apr_proc_mutex_lock failed. Attempting to shutdown process gracefully.
I am getting this error when the server comes under load...
TIA
SB
The official User-To-User support
Hi all, I have an array with methods to insert and delete elements in
the array. These methods can be called by my apache module as well as
external 3rd party programs. Should I protect these methods with the
apr_proc_mutex.h or apr_thread_mutex.h routines? I am currently using
the prefork MPM so there's no serverside thread issues...
Many thanks
Christiaan
The official User-To-User support forum
Just as an FYI to fellow developpers out there (feeling generous today):
How many times have you written a semaphore locking system for your
programs and worried they weren't thread-safe, or wished you didn't have
to? Well, if you're feeling especially lazy (as I often do) and you
have MySQL on hand, try using its locking features instead of writing
your own (especially if your program
The query cache has a mutex that is locked while it is searched. This
is not a spin lock, so many threads will go to sleep when there is
contention. And it is made worse because work is done to create the
search key in Query_cache::send_result_to_client() (work == memory
allocation and other byte copying) after the mutex is locked.
Are there plans to fix this?
I don't have benchmark results
Are there plans to fix the key cache mutex contention problem in
MyISAM that occurs on SMP platforms? If there are plans, is there a
worklog entry?
There is a bug for this at http://bugs.mysql.com/bug.php?id1551
Mark Callaghan
[email protected]
Hello,
I have a problem with mod_ssl running apache 2.0.36 on Linux Debian.
The ssl server hangs after couple of HTTPS requests and i have to restart
it.
In log file I get these two warnings when the connection hangs:
[warn] Failed to acquire global mutex lock
[warn] Failed to release global mutex lock
I found out that if I change the settings in ssl.conf from
SSLSessionCache dbm:logs/ssl_scache
We are seeing the root parent httpd process dying regularly - usually within
a few hours of startup - on 2.2.4/6 on Solaris 10 on SPARC. After parent
death, the child processes continue to run.
Excerpt from error_log:
[Wed Oct 03 02:09:31 2007] [emerg] (46)No record locks available: couldn't
grab
the accept mutex
[Wed Oct 03 02:09:31 2007] [alert] Child 24023 returned a Fatal error...
Apache
is exiting
Hi ,
I am using apache version 2.0.43 on HP-UX 11.11. After some time http server is getting killed automatically.
The error log is below:
Please let me know what is the problem.
Thanks in Advance
Surendra
Error Log
[Wed Feb 26 17:55:38 2003] [emerg] (36)Identifier removed: couldn't grab the accept mutex
[Wed Feb 26 17:55:38 2003] [emerg] (36)Identifier removed: couldn't grab the
[Wed
Nov 17 18:56:11 2004] [warn] (45)Deadlock situation detected/avoided:
Failed to acquire global mutex lock
I am seeing the above warning being logged in my error log file quite
frequently - almost every sec during my load tests.
Don't know if it's really a problem or as it's a warning can I just
ignore ?
I did search the list archives but couldn't find anything that would
help me understand
#ifndef ACTIVEMQ_CONCURRENT_MUTEX_H
#define ACTIVEMQ_CONCURRENT_MUTEX_H
// Includes.
#include
#include
namespace activemq{
namespace concurrent{
/**
* Creates a pthread_mutex_t object. The object is created
* such that successive locks from the same thread is allowed
* and will be successful.
* @author Nathan Mittler
* @see pthread_mutex_t
*/
class Mutex
My Route Looks like :
from("timer://" + "yr" +"?
fixedRate=true&period=10").transacted("PROPAGATION_REQUIRES_NEW").bean(cool,
"someBusinessLogic");
ANd The someBusinessLogic is :
public void someBusinessLogic() {
// loop to empty queue
if(getMutex()){
while (true) {
String msg = consumer.receiveBody("
Hello
I was just going through the following blog posts:
http://mysqlha.blogspot.com/2010/09/mysql-versus-mongodb-yet-another-silly.html
http://mysqlha.blogspot.com/2010/09/mysql-versus-mongodb-fetch-by-secondary.html
http://mysqlha.blogspot.com/2010/09/mysql-versus-mongodb-update-performance.html
And, as per the numbers, MongoDB doesn't give great numbers compared
to MySQL (used to store/
In following code,
synchronized sync(mutex);
aai->removeAllAppenders();
mutex is for append and dispatch threads to access rotate buffer.
And the mutex to protect adding and removing appenders from asyncappender is
aai->getMutex()
I removed above two lines and simple call removeAllAppenders(), which will call
synchronized sync(aai->getMutex());
aai->removeAllAppenders();
then resolve one dead
Hi All,
I have another application which possibly has locked a mutex.
How can check if this mutex locked? I need to know if that application is
running.
Thanks,
Vladimir
