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From Daniel <dferra...@gmail.com>
Subject Re: [users@httpd] Getting "connection refused" Apache 2.4
Date Mon, 16 Nov 2015 20:07:44 GMT
migrate to worker or event...
if you have to stick with prefork mpm, increase the number of
MinSpareServers to a very high number, prefork is very slow spawning new
children since it is not threaded, so better spawn most when apache starts.

El lun., 16 nov. 2015 a las 20:58, o haya (<ohaya@yahoo.com.invalid>)
escribió:

> Hi,
>
> I am trying to do some load testing of Apache 2.4 on Redhat.
>
> Configuration displayed when I run "httpd -V" shows:
>
> Server MPM: prefork
> threaded: no
> forked: yes (variable process count)
>
> I am using Jmeter to test, and when I increase the number of simultaneous
> threads to > 200, I am seeing increasing number of errors, with a lot of
> "connection refused" errors, e.g.:
>
> org.apache.http.conn.HttpHostConnectException: Connection to
> http://10.0.3.10:80 refused
>         at
> org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:190)
>         at
> org.apache.http.impl.conn.ManagedClientConnectionImpl.open(ManagedClientConnectionImpl.java:294)
>         at
> org.apache.jmeter.protocol.http.sampler.MeasuringConnectionManager$MeasuredConnection.open(MeasuringConnectionManager.java:107)
>         at
> org.apache.http.impl.client.DefaultRequestDirector.tryConnect(DefaultRequestDirector.java:643)
>         at
> org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:479)
>         at
> org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:906)
>         at
> org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:805)
>         at
> org.apache.jmeter.protocol.http.sampler.HTTPHC4Impl.executeRequest(HTTPHC4Impl.java:517)
>         at
> org.apache.jmeter.protocol.http.sampler.HTTPHC4Impl.sample(HTTPHC4Impl.java:331)
>         at
> org.apache.jmeter.protocol.http.sampler.HTTPSamplerProxy.sample(HTTPSamplerProxy.java:74)
>         at
> org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase.sample(HTTPSamplerBase.java:1146)
>         at
> org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase.sample(HTTPSamplerBase.java:1135)
>         at
> org.apache.jmeter.threads.JMeterThread.process_sampler(JMeterThread.java:434)
>         at
> org.apache.jmeter.threads.JMeterThread.run(JMeterThread.java:261)
>         at java.lang.Thread.run(Unknown Source)
> Caused by: java.net.ConnectException: Connection timed out: connect
>         at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method)
>         at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source)
>         at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
>         at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown
> Source)
>         at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
>         at java.net.PlainSocketImpl.connect(Unknown Source)
>         at java.net.SocksSocketImpl.connect(Unknown Source)
>         at java.net.Socket.connect(Unknown Source)
>         at
> org.apache.http.conn.scheme.PlainSocketFactory.connectSocket(PlainSocketFactory.java:127)
>         at
> org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:180)
>         ... 14 more
>
>
> I've been trying to re-configure the Apache to avoid these errors, e.g.,
> increasing "MaxClients", and I've also increased the amount of memory for
> the machine (to 4GB) but so far, nothing I have done has improved the
> situation.
>
> Is there something else that I can do to try to get the Apache so that it
> can accept the larger number of connections?
>
> Thanks,
> Jim
>
>
>
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