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https://issues.apache.org/jira/browse/ARTEMIS-732?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15510763#comment-15510763
 ] 

ASF GitHub Bot commented on ARTEMIS-732:
----------------------------------------

Github user clebertsuconic commented on a diff in the pull request:

    https://github.com/apache/activemq-artemis/pull/788#discussion_r79900443
  
    --- Diff: 
artemis-cli/src/main/resources/org/apache/activemq/artemis/cli/commands/bin/artemis
 ---
    @@ -105,6 +105,16 @@ if [ -z "$LOG_MANAGER" ] ; then
       LOG_MANAGER="$ARTEMIS_HOME/lib/${logmanager}"
     fi
     
    +# determine which native library version to load
    +LIBRARY_PATH="-Djava.library.path=\"$ARTEMIS_HOME/bin/lib"
    +if [ "$(uname -m)" = "x86_64" ]; then
    +  LIBRARY_PATH="$LIBRARY_PATH/linux-x86_64\""
    +elif [ "$(uname -m)" = "i686" ]; then
    +  LIBRARY_PATH="$LIBRARY_PATH/linux-i686\""
    +else
    +  LIBRARY_PATH=""
    --- End diff --
    
    Actually no, the ./artemis create will use the libaio to determine the 
journal type (if it can't load libaio, it won't use it).. and it will also 
perform a sync on the system to calculate the timed-buffer values.


> Spurious message while loading native libraries in certain envs.
> ----------------------------------------------------------------
>
>                 Key: ARTEMIS-732
>                 URL: https://issues.apache.org/jira/browse/ARTEMIS-732
>             Project: ActiveMQ Artemis
>          Issue Type: Bug
>          Components: Broker
>    Affects Versions: 1.4.0
>         Environment: Debian Linux 64-bit (Stretch), OpenJDK 1.8.0.102
>            Reporter: Jim Gomes
>            Assignee: Justin Bertram
>            Priority: Blocker
>              Labels: easyfix
>             Fix For: 1.5.0
>
>         Attachments: artemis, artemis64
>
>   Original Estimate: 1h
>  Remaining Estimate: 1h
>
> Some systems will throw the following message when loading the wrong bit 
> alignment:
> {noformat}
> OpenJDK 64-Bit Server VM warning: You have loaded library
> /home/username/apache-artemis-1.4.0/bin/lib/linux-i686/libartemis-native-32.so
> which might have disabled stack guard. The VM will try to fix the stack guard 
> now.
> It's highly recommended that you fix the library with 'execstack -c 
> <libfile>', or link it with '-z noexecstack'
> {noformat}
> The problem is with the {{exec}} command-line, specifically the 
> {{-Djava.library.path}} parameter. It combines both the 32-bit library path 
> and the 64-bit library path, but it doesn't actually work.  The script should 
> deal with it accordingly to only have the proper  32-bit or 64-bit. All that 
> is necessary is to modify the library path to be platform specific, and the 
> error condition is resolved. I have attached modified script files 
> (*{{artemis}}* and *{{artemis64}}*) that can be used depending on the 
> run-time environment. Here are the key differences between the two scripts:
> {code:title=32-bit version}
> exec "$JAVACMD" $JAVA_ARGS $ARTEMIS_CLUSTER_PROPS \
>     -classpath "$CLASSPATH" \
>     -Dartemis.home="$ARTEMIS_HOME" \
>     -Djava.library.path="$ARTEMIS_HOME/bin/lib/linux-i686" \
>     $DEBUG_ARGS \
>     org.apache.activemq.artemis.boot.Artemis "$@"}}
> {code}
> {code:title=64-bit version}
> exec "$JAVACMD" $JAVA_ARGS $ARTEMIS_CLUSTER_PROPS \
>     -classpath "$CLASSPATH" \
>     -Dartemis.home="$ARTEMIS_HOME" \
>     -Djava.library.path="$ARTEMIS_HOME/bin/lib/linux-x86_64" \
>     $DEBUG_ARGS \
>     org.apache.activemq.artemis.boot.Artemis "$@"
> {code}



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