Re: OutOfMemoryError

Posted by Wayne Rasband-2 on Dec 25, 2020; 9:08pm
URL: http://imagej.273.s1.nabble.com/OutOfMemoryError-tp5024312p5024315.html

> On Dec 25, 2020, at 6:46 AM, Thomas Fischer <[hidden email]> wrote:
>
> Hi altogether,
>
> my laptop runs under linux debian 10 and has 8 GB RAM. Edit  › Options  ›
> Memory & Threads does not allow me to increase the value above 2666MB.

Try the Linux version of ImageJ available at https://imagej.nih.gov/ij/download.html. The Edit>Options>Memory & Threads command updates the third line of the ImageJ.cfg file. For example, it changes this line to "-Xmx4000m -cp ij.jar ij.ImageJ” when you set the value to 4000 in the Memory & Threads dialog.

-wayne
   

> relevant lines in /usr/bin/imagej (a not so simple wrapper script used to
> run ImageJ) are
>
> declare -i mem
> declare -i default_mem=4000
> declare -i min_mem=16
> declare -i max_mem
> declare -i free_mem
>
> and further down
>
> elif [[ `uname` == 'Linux' ]] ; then
>    if [[ `uname -m` == 'x86_64' ]] ; then
>        java_path="${ij_path}/jre64/bin/java"
>        max_mem=`free | awk 'NR == 2 {fmem=int($2 / 1024); if (fmem < 4000)
> {print fmem} else {print 4000}}'`
>        free_mem=`free | awk 'NR == 3 {fmem=int($4 / 1024); if (fmem <
> 4000) {print fmem} else {print 4000}}'`
>        mem=${free_mem}/3*2
>        if (( $mem > $default_mem || $mem < $min_mem )) ; then
> mem=$default_mem ; fi
>    else
>
> typing free:
>              total        used        free      shared  buff/cache
> available
> Mem:        8064332     1579956     2659136      183288     3825240
> 5998348
> Swap:       8282108           0     8282108
>
> changing declare -i default_mem=4000 to declare -i default_mem=8000 has no
> effect on the lines further down
>
> where is the superior position where the change to 8000 makes a difference
> in the file imagej?
>
> thank you, Thomas

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