On Wed, May 30, 2012 at 5:43 PM, Bill Allombert
<[email protected]> wrote:
> Please look at the manpage. There is both an environment variable JPEGMEM and
> a
> flag -maxmemory to limit the memory usage. This is a benefit of libjpeg8 over
> libjpeg62.
1. here is what man page states:
...
-maxmemory N
Set limit for amount of memory to use in processing
large images. Value is in thousands of bytes, or millions of bytes if
"M" is attached
to the number. For example, -max 4m selects 4000000
bytes. If more space is needed, temporary files will be used.
...
I believe "-max 4m" is wrong here and should read "-maxmemory 4m".
2. I have been using xosview and top to check memory consumption but
the flag and the env var are never used in my case:
$ export JPEGMEM=4000
$ cjpeg -maxmemory 4M -progressive -arithmetic -rgb -block 1 -outfile
huge1.jpg -quality 100 huge.ppm
xosview shows ~4Gb of RAM used before I kill the process
--
Mathieu
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