Bonjour everybody

I use Jmeter for my tests (send https requests to a web server)
I use a linux PC with 512Mo of memory.
My test plan is simple :
  Thread group with 400 threads with a Ram-up of 300 seconds and just 1 loop.
     Request defaults
     Cookie manager
     Page request (https)
     File reporter


after launching all the thread, i have some request response Ok 
but for some threads (about 200), I have this exception :
java.net.SocketException: Unexpected end of file from server
        at com.sun.net.ssl.internal.www.protocol.https.HttpClient.b(DashoA6275)
        at com.sun.net.ssl.internal.www.protocol.https.HttpClient.a(DashoA6275)
        at com.sun.net.ssl.internal.www.protocol.https.HttpClient.b(DashoA6275)
        at com.sun.net.ssl.internal.www.protocol.https.HttpClient.a(DashoA6275)
        at 
com.sun.net.ssl.internal.www.protocol.https.HttpsURLConnection.getInputStream(DashoA6275)
        at 
com.sun.net.ssl.internal.www.protocol.https.HttpsURLConnection.getResponseCode(DashoA6275)
        at 
org.apache.jmeter.protocol.http.sampler.HTTPSampler.getErrorLevel(HTTPSampler.java:349)
        at 
org.apache.jmeter.protocol.http.sampler.HTTPSampler.sample(HTTPSampler.java:457)
        at 
org.apache.jmeter.protocol.http.sampler.HTTPSampler.sample(HTTPSampler.java:165)
        at org.apache.jmeter.threads.JMeterThread.run(JMeterThread.java:138)
        at java.lang.Thread.run(Unknown Source)

the max use of the CPU is  30%.
Can you help me, please ?


Samuel GRU
Softeam

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