From: Rob De Langhe (rob.de.langhe@twistfare.be)
Date: Thu Feb 01 2007 - 16:49:38 EST
Hi,
recently re-installed E25K domains with Solaris-10, and my users complain that their application fails to load a big chunk of data into memory to produce later an output file with reworked data. When they ran their program on the same box but under Solaris-8, such output file was about 250MB in size, so not spectacular.
While I monitor the size of such process (in Solaris-10) during its loading of data, it exits just around 4GB of virtual memory size, with error "out of memory".
So I reproduce this, with a small C-program that calls "malloc()" for chunks of 200MB each. It does so till exactly 4GB, than terminates with "Not enough space"...
My server has 128GB of RAM installed, 4GB of swap.
While I run my tiny (but growing) program, the swap remains entirely unused ("swap -l" reports all 4GB free), and RAM decreases from around 82GB free to 78GB free, then back (when the space from my program is returned).
I searched all around the kernel params, docs.sun.com, and Google, but nowhere anything that resembles a 32-bit behaviour to limit memory size per process to 4GB.
Yes, my machine runs in 64-bit mode ("isainfo -v" reports 64-bit sparcv9 kernel)
My user (as any other user) has
% ulimit -a
... virtual memory (kbytes) unlimited
Any hints or tips?
Rob
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