I am trying to hit 350 users but Jmeter failing script by saying Connection timed out.
I have added following:
http.connection.stalecheck$Boolean=true in hc.parameter file
httpclient4.retrycount=1
hc.parameter.file=hc.parameter
Is there anything that I am missing to add on?
This normally indicates a problem on application under test side so I would recommend checking the logs of your application for anything suspicious.
If everything seems to be fine there - check logs of your web and database servers, for instance Apache HTTP Server allows 150 connections by default, MySQL - 100, etc. so you may need to identify whether you are suffering from this form of limits and what needs to be done to raise them
And finally it may be simply lack of CPU or free RAM on application under test side so next time you run your test keep an eye on baseline OS health metrics as application may respond slowly or even hang if it doesn't have any spare headroom. You can use JMeter PerfMon plugin to integrate this form of monitoring with your load test.
I am trying to install mysql, & whenever I hit the installer file, it just does few initial steps - and simply does not respond or process furthher. Can someone help finding out, whats the issue ? I've added snaps below.
Also later somehow I did manage to install it, but whenever I am running it. I am getting error as follows
Exactly as the error message tells you it could be a memory issue.
Memory could not be written can be caused by:
1) Defective RAM. Check the RAM with the "Memory" test on the boot screen or with MemTest 86+
2) Bad "third" party device drivers. Try to review and remove "questionable" drivers
3) Too many apps starting up. Try following a "clean boot" set up.
This thread might help http://answers.microsoft.com/en-us/windows/forum/windows_7-windows_programs/the-memory-could-not-be-written/21e2d589-04d7-42bd-9836-d089067edbb2
I am getting the MySQL error
"Got an error reading communication packets"
in MySQL.err file and in my application side I am getting 2013 error (lost connection during query).
All the timeout values are (in seconds):
wait_timeout = 60
net_read_timeout = 30
connect_timeout = 30
How to resolve this?
For what this is worth, this vague error is somewhat common with many possible culprits.
Often it is not a problem with MySql per say...but the system or calling program instead. eg Sometimes you have php memory limits set to low or the swap drive was never setup...that crashes PHP and MySQL is left confused as to what happened.
In my case, I didn't have that, but I was trying to do a json_encode on a character string with non-utf8 characters which would fail silently and drag mysql down with it. On top of this OPCache in PHP7 seems to be seriously buggy and lacks proper error logging. I had to disable that as well...then magically all my problems with "communication packets" in /var/log/mysql/error.log went away.
Hope this helps someone...gave me a LOT of grief.
Another very weird corner case: check your RAM and your swap!
If you have not enough RAM and swap space, your operating system may decide to kill processes causing your exact error in case of MySQL (Got an error reading communication packets). This is a common situation in virtual machines where the provider often does not install any partition for the swap (and when often people does not pay enough RAM).
So, double-check with top or htop to verify if you have ~100% of your RAM in use or if you have not enough swap (or not swap space at all).
In that case, buy more RAM or search "how to install swapfile" in your distribution.
If that's not the case, see the other answers. Cheers! :)
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I'm getting a SQL Server error:
A transport-level error has occurred
when receiving results from the
server. (provider: Shared Memory
Provider, error: 0 - The handle is
invalid.)
I'm running Sql Server 2008 SP1, Windows 2008 Standard 64 bit.
It's a .Net 4.0 web application. It happens when a request is made to the server. It's intermittent. Any idea how I can resolve it?
The database connection is closed by the database server. The connection remains valid in the connection pool of your app; as a result, when you pickup the shared connection string and try to execute it's not able to reach the database. If you are developing Visual Studio, simply close the temporary web server on your task bar.
If it happens in production, resetting your application pool for your web site should recycle the connection pool.
Try the following command on the command prompt:
netsh interface tcp set global autotuning=disabled
This turns off the auto scaling abilities of the network stack
I had the same problem. I restarted Visual Studio and that fixed the problem
Transport level errors are often linked to the connection to sql server being broken ... usually network.
Timeout Expired is usually thrown when a sql query takes too long to run.
So few options can be :
Check for the connection in VPN (if used) or any other tool
Restart IIS
Restart machine
Optimize sql queries.
For those not using IIS, I had this issue when debugging with Visual Studio 2010. I ended all of the debugger processes: WebDev.WebServer40.EXE which solved the issue.
All you need is to Stop the ASP.NET Development Server and run the project again
If you are connected to your database via Microsoft SQL Server Management, close all your connections and retry.
Had this error when connected to another Azure Database, and worked for me when closed it.
Still don't know why ..
Look at the MSDN blog which details out this error:
Removing Connections
The connection pooler removes a connection from the pool after it has
been idle for a long time, or if the pooler detects that the
connection with the server has been severed.
Note that a severed connection can be detected only after attempting
to communicate with the server. If a connection is found that is no
longer connected to the server, it is marked as invalid.
Invalid connections are removed from the connection pool only when
they are closed or reclaimed.
If a connection exists to a server that has disappeared, this
connection can be drawn from the pool even if the connection pooler
has not detected the severed connection and marked it as invalid.
This is the case because the overhead of checking that the connection
is still valid would eliminate the benefits of having a pooler by
causing another round trip to the server to occur.
When this occurs, the first attempt to use the connection will detect
that the connection has been severed, and an exception is thrown.
Basically what you are seeing is that exception in the last sentence.
A connection is taken from the connection pool, the application does
not know that the physical connection is gone, an attempt to use it is
done under the assumption that the physical connection is still there.
And you get your exception.
There are a few common reasons for this.
The server has been restarted, this will close the existing connections.
In this case, have a look at the SQL Server log, usually found at:
C:\Program Files\Microsoft SQL Server\\MSSQL\LOG
If the timestamp for startup is very recent, then we can suspect that
this is what caused the error. Try to correlate this timestamp with
the time of exception.
2009-04-16 11:32:15.62 Server Logging SQL Server messages in file
‘C:\Program Files\Microsoft SQL Server\MSSQL.1\MSSQL\LOG\ERRORLOG’.
Someone or something has killed the SPID that is being used.
Again, take a look in the SQL Server log. If you find a kill, try to
correlate this timestamp with the time of exception.
2009-04-16 11:34:09.57 spidXX Process ID XX was killed by
hostname xxxxx, host process ID XXXX.
There is a failover (in a mirror setup for example) again, take a look in the SQL Server log.
If there is a failover, try to correlate this timestamp with the time
of exception.
2009-04-16 11:35:12.93 spidXX The mirrored database “” is changing roles from “PRINCIPAL” to “MIRROR” due to
Failover.
Was getting this, always after about 5 minutes of operation. Investigated and found that a warning from e1iexpress always occurred before the failure. This apparently is an error having to do with certain TCP/IP adapters. But changing from WiFi to hardwired didn't affect it.
So tried Plan B and restarted Visual Studio. Then it worked fine.
On closer study I noticed that, when working correctly, the message The Thread '<No Name>' has exited with code 0 occurred at almost exactly the time the run crashed in previous attempts. Some Googling reveals that that message comes up when (among other things) the server is trimming the thread pool.
Presumably there was a bogus thread in the thread pool and every time the server attempted to "trim" it it took the app down.
You get this message when your script make SQL Service stopped for some reasons. so if you start SQL Service again perhaps your problem will be resolved.
I know this may not help everyone (who knows, maybe yes), but I had the same problem and after some time, we realized that the cause was something out of the code itself.
The computer trying to reach the server, was in another network, the connection could be established but then dropped.
The way we used to fix it, was to add a static route to the computer, allowing direct access to the server without passing thru the firewall.
route add –p YourServerNetwork mask NetworkMask Router
Sample:
route add –p 172.16.12.0 mask 255.255.255.0 192.168.11.2
I hope it helps someone, it's better to have this, at least as a clue, so if you face it, you know how to solve it.
I got the same error in Visual Studion 2012 development environment, stopped the IIS Express and rerun the application, it started working.
I had the same issue. I solved it, truncating the SQL Server LOG.
Check doing that, and then tell us, if this solution helped you.
For me the solution was totally different.
In my case I had an objectsource which required a datetimestamp parameter. Even though that ODS parameter ConvertEmptyStringToNull was true 1/1/0001 was being passed to SelectMethod. That in turn caused a sql datetime overflow exception when that datetime was passed to the sql server.
Added an additional check for datetime.year != 0001 and that solved it for me.
Weird that it would throw a transport level error and not a datetime overflow error.
Anyways..
In my case the "SQL Server" Server service stopped. When I restarted the service that enabled me to run the query and eliminate the error.
Its also a good idea to examine your query to find out why the query made this service stop
For me the answer is to upgrade the OS from 2008R2 to 2012R2, the solution of iisreset or restart apppool didn't work for me.
I also tried to turn of TCP Chimney Offload setting, but I didn't restart the server because it is a production server, which didn't work either.
We encountered this error recently between our business server and our database server.
The solution for us was to disable "IP Offloading" on the network interfaces.
Then the error went away.
One of the reason I found for this error is 'Packet Size=xxxxx' in connection string. if the value of xxxx is too large, we will see this error. Either remove this value and let SQL server handle it or keep it low, depending on the network capabilities.
It happened to me when I was trying to restore a SQL database and checked following Check Box in Options tab,
As it's a stand alone database server just closing down SSMS and reopening it solved the issue for me.
This occurs when the database is dropped and re-created some shared resources is still considering the database still exists, so when you re-run execute query to create tables in the database after it was re-created the error will not show again and Command(s) completed successfully. message will show instead of the error message Msg 233, Level 20, State 0, Line 0 A transport-level error has occurred when sending the request to the server. (provider: Shared Memory Provider, error: 0 - No process is on the other end of the pipe.).
Simply ignore this error when you are dropping and recreating databases and re-execute your DDL queries with no worries.
I faced the same issue recently, but i was not able to get answer in google.
So thought of sharing it here, so that it can help someone in future.
Error:
While executing query the query will provide few output then it will throw below error.
"Transport level error has occurred when receiving output from
server(TCP:provider,error:0- specified network name is no longer
available"
Solution:
Check the provider of that linked server
In that provider properties ,Enable "Allow inprocess" option for that particular provider to fix the issue.
While executing SSIS package, I got following errors,
The buffer manager failed a memory allocation call for 10484608 bytes, but was unable to swap out any buffers to relieve memory pressure. 20 buffers were considered and 20 were locked. Either not enough memory is available to the pipeline because not enough are installed, other processes were using it, or too many buffers are locked.
[DTS.Pipeline] Error: Thread "SourceThread0" has exited with error code 0xC0047038.
[DTS.Pipeline] Error: The Data Flow task failed to create a buffer to call PrimeOutput for output "XML Source 1" (91) on component "GeneralCongfigurations" (98). This error usually occurs due to an out-of-memory condition.
It happen when trying insert data to SQL table from an XML file with 'Script Component'.
How to solve it?
The message tells you SSIS is using 20 buffers, 10Mb each - about 200Mb together.
It is not very big amount of memory, even on 1Gb machine you would not run out of memory.
It is likely other processes consume the rest of the memory - check the task manager. Often it is SQL Server who consumes all the memory - if you run SQL and SSIS on same machine, restrict the amount of memory SQL is allowed to consume (in SQL Server properties), leaving some memory for SSIS - I would recommend leaving at least 0.5Gb.
You should also look at all of the log messages. In particular, Lookup transforms can log a lot of information about how much memory they're using. You can get some very detailed logs about memory allocation.
I faced the same issue. My XML source is of around 2MB. when I start the package it started throwing this OutOfMomory warning. My server has around 8GB RAM. So it was not memory issues . Current machine SQL server service was taking close to 6GB space. I could check this from Task Manager. As my SSIS package destination was connecting to difference database I did not want the current server SQL service to be running. So the moment I stopped this SQL SERVER service, my SSIS package executed successfully.
#Chris Pickford
You want to use PerfMon Counters:
Memory\
Availabe Bytes/MBytes
Committed Byrtes
SQLServer:SSIS Pipeline\
Buffer Memory
Buffers in Use
Buffers Spooled
Also, if you've got logging on your package, look at event User:BufferSizeTuning