About Rakesh Cusat
I had been using JMeter to generate load for my production server to test my application. The test-plan has 13+ HTTP sampler to make different request and one Regular Expression extractor to extract some value from the response. This value was used in consecutive HTTP Sampler. This test case simple and straight forward. Initially I used 200 JMeter threads to simulate 200 users. Server was able to handle these many requests easily but when the number of thread was increased, it couldn’t handled and waited infinitely. Surely something was going on. JMeter threads were waiting for the connection and couldn’t get it so waited infinitely. To avoid this situation, I introduced “HTTP Request default” to add some connection and response timeout. One problem was solved, now threads are not hanging there infinitely but they were timing out with the following exception.
java.net.SocketTimeoutException: Read timed out at java.net.SocketInputStream.socketRead0(Native Method) at java.net.SocketInputStream.read(SocketInputStream.java:129) at java.io.BufferedInputStream.fill(BufferedInputStream.java:218) at java.io.BufferedInputStream.read(BufferedInputStream.java:237) at org.apache.commons.httpclient.HttpParser.readRawLine(HttpParser.java:78) at org.apache.commons.httpclient.HttpParser.readLine(HttpParser.java:106) at org.apache.commons.httpclient.HttpConnection.readLine(HttpConnection.java:1116) at org.apache.commons.httpclient.HttpMethodBase.readStatusLine(HttpMethodBase.java:1973) at org.apache.commons.httpclient.HttpMethodBase.readResponse(HttpMethodBase.java:1735) at org.apache.commons.httpclient.HttpMethodBase.execute(HttpMethodBase.java:1098) at org.apache.commons.httpclient.HttpMethodDirector.executeWithRetry(HttpMethodDirector.java:398) at org.apache.commons.httpclient.HttpMethodDirector.executeMethod(HttpMethodDirector.java:171) at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:397) at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:323) at org.apache.jmeter.protocol.http.sampler.HTTPHC3Impl.sample(HTTPHC3Impl.java:258) at org.apache.jmeter.protocol.http.sampler.HTTPSamplerProxy.sample(HTTPSamplerProxy.java:62) at org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase.sample(HTTPSamplerBase.java:1088) at org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase.sample(HTTPSamplerBase.java:1077) at org.apache.jmeter.threads.JMeterThread.process_sampler(JMeterThread.java:428) at org.apache.jmeter.threads.JMeterThread.run(JMeterThread.java:256) at java.lang.Thread.run(Thread.java:662)
Source : http://www.javacodegeeks.com/2013/07/apache-server-and-jmeter-debugging.html
