Re: [Evolution] stability/stability

["Brian J. Murrell" <brian interlinx bc ca>]

On Sun, 2009-10-11 at 16:00 -0700, Jonathan Ryshpan wrote:
>         
> Description:
>         Description of problem:
>         Several times a day evolution freezes, doesn't respond to input or
>         refresh its window.  Generally, if I click on the window decoration to
>         delete the window, the window manager (gnome) puts up an error box that
>         evolution is not responding and asking if I want it killed.

These types of problems almost always require a stack trace of the
hung-up process.  I have a neat little script which I use to get stack
traces:

#!/bin/bash

# get a stack trace from a running process

# where to put the stack trace
destfile=/tmp/ThreadStacktrace.txt

procname=$1
pid_or_core=$2

if [[ $procname = /var/crash/_* ]]; then
    dir=$(mktemp -d ~/tmp/apport-unpack-XXXXXX)
    trap "rm -rf $dir" EXIT
    apport-unpack $procname $dir
    ls -l $dir
    cat $dir/Title $dir/ThreadStacktrace > $destfile
    #strings $dir/CoreDump | less
else
    if [ -z "$pid_or_core" ]; then
        pid_or_core=$(pidof $procname)
    fi

    if [ -z "$pid_or_core" ]; then
        echo "Could not find process id of a running $1"
        exit 1
    fi

    if [[ $pid_or_core =~ ^[0-9][0-9]*$ ]]; then
        procname=$(lsof -p $pid_or_core | awk "/\/$procname$/ { print \$9 }")
    elif [[ $procname != /* ]]; then
        procname=$(which $procname)
    fi

    if [ -z "$procname" ]; then
        echo "Could not find location of $1"
        exit 1
    fi

    batchfile=$(mktemp /tmp/gdb.XXXXXX)

    trap "rm -f $batchfile" INT HUP EXIT

    > $destfile
    cat <<EOF > $batchfile
set logging file $destfile
set logging on
thread apply all bt full
where
EOF

    gdb -batch -x $batchfile $procname $pid_or_core </dev/null
    sed -i -e 's/---Type <return> to continue, or q <return> to quit---//g' $destfile
fi

This almost always works, for any process.  For a hung up evolution you
simply run:

$ get_stacktrace evolution

and when it's done /tmp/ThreadStacktrace.txt has exactly what you need
to paste into your evolution bug report.

If evolution actually crashed you can do:

$ get_stacktrace evolution /path/to/core

and again, you get exactly what you want to paste into bugzilla.

Cheers,
b.

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