geronimo-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Kevan Miller <kevan.mil...@gmail.com>
Subject Re: startup hangs 180s at 37%
Date Sun, 13 Sep 2009 20:43:10 GMT

On Sep 13, 2009, at 2:02 PM, Juergen Weber wrote:

>
> Hi,
>
> my startup hangs 180s at 37%
>
> 	2.2-SNAPSHOT
> Build 	2009.09.10-08:12:53.147-0400
> Ubuntu 9.0.4 in VMWare Player
>
> I took this thread dump:
>
> [**************                          ]  37%  43s Starting
> org.apache.ger...2009-09-13 19:56:32
>
<snip>
>
> "main" prio=10 tid=0x08eab800 nid=0x10ab runnable [0xb7576000]
>   java.lang.Thread.State: RUNNABLE
>        at java.io.FileInputStream.readBytes(Native Method)
>        at java.io.FileInputStream.read(FileInputStream.java:199)
>        at
> sun.security.provider.NativePRNG$RandomIO.readFully(NativePRNG.java: 
> 185)
>        at
> sun.security.provider.NativePRNG 
> $RandomIO.implGenerateSeed(NativePRNG.java:202)
>        - locked <0xad931778> (a java.lang.Object)
>        at
> sun.security.provider.NativePRNG$RandomIO.access$300(NativePRNG.java: 
> 108)
>        at
> sun.security.provider.NativePRNG.engineGenerateSeed(NativePRNG.java: 
> 102)
>        at java.security.SecureRandom.generateSeed(SecureRandom.java: 
> 495)
>        at
> com 
> .sun 
> .net.ssl.internal.pkcs12.PKCS12KeyStore.getSalt(PKCS12KeyStore.java: 
> 477)
>        at
> com 
> .sun 
> .net 
> .ssl.internal.pkcs12.PKCS12KeyStore.calculateMac(PKCS12KeyStore.java: 
> 834)
>        at
> com 
> .sun 
> .net 
> .ssl.internal.pkcs12.PKCS12KeyStore.engineStore(PKCS12KeyStore.java: 
> 788)
>        - locked <0xad5a0740> (a
> com.sun.net.ssl.internal.pkcs12.PKCS12KeyStore)
>        at java.security.KeyStore.store(KeyStore.java:1117)
>        at
> org.apache.geronimo.crypto.KeystoreUtil.<clinit>(KeystoreUtil.java: 
> 101)
>        at
> org 
> .apache 
> .geronimo 
> .tomcat 
> .TomcatManagerImpl.addSslConnectorAttributes(TomcatManagerImpl.java: 
> 459)
>        at
> org 
> .apache 
> .geronimo.tomcat.TomcatManagerImpl.<clinit>(TomcatManagerImpl.java: 
> 112)
>        at  
> sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
> Method)

<snip>

Hi Jurgen,
Your system is running low on entropy. The main thread is trying to  
generate a random number and is reading from /dev/random to generate a  
seed value. However, there's not enough external events for the system  
to generate "random" data for /dev/random.

There's some discussion, here -- http://www.nabble.com/Startup-time-delay-in-Ubuntu-server-td21301711s134.html

Using /dev/urandom is likely to be your best bet, though it may affect  
the quality (i.e. randomness) of your random number. I'm not an  
expert. So, don't know how concerned you should be...

You may find these useful:

http://n0tablog.wordpress.com/2007/11/24/running-out-of-entropy-in-debian-etch/
http://whatan00b.com/slow-apache-starts-on-ubuntu
http://en.wikipedia.org/wiki/Urandom

--kevan
--kevan

Mime
View raw message