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From Deepak Goel <deic...@gmail.com>
Subject Re: Saving large (>500Mb) http response to a file.
Date Thu, 07 Jun 2012 15:15:37 GMT
Hey

How many users are you running? Is it just one? You might have to
refine your other java heap settings too

:)
Deepak

On 6/7/12, Cyril SANTUNE <cyril.santune@gmail.com> wrote:
> Hi,
>
> I only do test with big files (10MB, 100MB, ...) and I have same trouble.
> So I use beanshell script and curl do make the transfert.
> But now, with the version 2.7, you can use external command with the
> sampler "OS Process Sampler".
>
> Cyril
>
>
>
> On Thu, Jun 7, 2012 at 9:04 AM, Carsten Petersen <cpe@testhuset.dk> wrote:
>
>> Hi.
>>
>> I am trying to verify a large (>500Mb) response from a HTTP request, but
>> whenever I run my TestPlan
>> the thread fails after running out of memory.
>>
>> I have added a "Save Responses to a file" Listener, but it looks like it
>> is the HTTP Request sampler that
>> fails when handling all the data in memory after the reception completes
>> -
>> see error ourput below.
>>
>> Console window output:
>>  java.lang.OutOfMemoryError: Java heap space
>>  Dumping heap to java_pid1912.hprof ...
>>  Heap dump file created [558234258 bytes in 6.291 secs]
>>
>> JMeter log file output:
>>  2012/06/07 14:51:53 ERROR - jmeter.threads.JMeterThread: Test failed!
>> java.lang.OutOfMemoryError: Java heap space
>>        at java.util.Arrays.copyOf(Unknown Source)
>>        at java.io.ByteArrayOutputStream.toByteArray(Unknown Source)
>>        at
>> org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase.readResponse(HTTPSamplerBase.java:1635)
>>        at
>> org.apache.jmeter.protocol.http.sampler.HTTPAbstractImpl.readResponse(HTTPAbstractImpl.java:236)
>>        at
>> org.apache.jmeter.protocol.http.sampler.HTTPJavaImpl.readResponse(HTTPJavaImpl.java:288)
>>        at
>> org.apache.jmeter.protocol.http.sampler.HTTPJavaImpl.sample(HTTPJavaImpl.java:518)
>>        at
>> org.apache.jmeter.protocol.http.sampler.HTTPSamplerProxy.sample(HTTPSamplerProxy.java:62)
>>        at
>> org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase.sample(HTTPSamplerBase.java:1060)
>>        at
>> org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase.sample(HTTPSamplerBase.java:1049)
>>        at
>> org.apache.jmeter.threads.JMeterThread.process_sampler(JMeterThread.java:442)
>>        at
>> org.apache.jmeter.threads.JMeterThread.run(JMeterThread.java:271)
>>        at java.lang.Thread.run(Unknown Source)
>>
>> I have already increased the heap allocation to its max on my hardware
>> (-Xmx1G), but without success. I guess I could
>> add memory, but since I have to run multiple downloads at the same time,
>> it does not look realistic.
>>
>> I can enable the "Save response as MD5 hash" option and have my TestPlan
>> succeed, but then the output file from the
>> run only contain the MD5 hash and since my response data is somewhat
>> dynamic it is of no real use.
>>
>> I can see that JMeter allows a large file to be uploaded by reading it as
>> needed during transmission, so I guess I need
>> the reverse of this i.e. store the response to a file while receiving it
>> without keeping it in memory. I guess something
>> like having the "Save response as MD5 hash" option dump the data to a
>> file
>> after its calculation are done.
>>
>> Does anybody know how I can do this ?
>>
>> Thanks in advance,
>> Carsten.
>>
>> P.S. I am using the following JMeter:
>>  2012/06/07 14:20:45 INFO  - jmeter.JMeter: Version 2.7 r1342410
>>  2012/06/07 14:20:45 INFO  - jmeter.JMeter: java.version=1.7.0_04
>>  2012/06/07 14:20:45 INFO  - jmeter.JMeter: java.vm.name=Java HotSpot(TM)
>> Client VM
>>  2012/06/07 14:20:45 INFO  - jmeter.JMeter: os.name=Windows 7
>>  2012/06/07 14:20:45 INFO  - jmeter.JMeter: os.arch=x86
>>  2012/06/07 14:20:45 INFO  - jmeter.JMeter: os.version=6.1
>>
>


-- 
Namaskara~Nalama~Guten Tag~Bonjour


   --
Keigu

Deepak
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deicool@gmail.com
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