Date: Mon, 12 Mar 2007 20:20:54 +0200 From: "Dima Sorkin" <dima.sorkin@gmail.com> To: freebsd-questions@freebsd.org Subject: Re: limitiation on memory allocation Message-ID: <e40293600703121120w7a013919l36103a19a930440a@mail.gmail.com> In-Reply-To: <6.0.0.22.2.20070309133935.024b8fd0@mail.computinginnovations.com> References: <e40293600703090632v3f25742g16e75708ded632ee@mail.gmail.com> <6.0.0.22.2.20070309094909.024c9dd0@mail.computinginnovations.com> <e40293600703090906n6f648580p5d46f45455ee707b@mail.gmail.com> <6.0.0.22.2.20070309133935.024b8fd0@mail.computinginnovations.com>
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Hi.
I experimented with the values:
1) On my machine 'maxusers' doesn't influence the maximum memory
allowable for allocation for single process.
2) 'maxdsiz' - Yes, as long as I keep 'maxdsiz + maxssiz' below physical
memory size - everything is fine. Single process allocates successfully
up to 'maxdsiz'.
When tried to put 'maxdsiz' > phys mem size,
indeed the system failed to boot, in all modes:
multiuser, singleuser, safe.
So I derive from here that there is no way to cause a _single process_
on FreeBSD to allocate more than physical memory size (?)
Thank you and regards,
Dima.
On 3/9/07, Derek Ragona <derek@computinginnovations.com> wrote:
> Not all the settings there are tuneable. In 6.X the allowable memory is
> somewhat automatic based on the max users. Your kernel is set to 384. You
> can try changing that.
>
> You can also make some kernel settings in:
> /boot/loader.conf
>
> You can see the possible variables to set in:
> /boot/defaults/loader.conf
>
> I think the one variable you may want to change is:
> kern.maxdsiz="to your actual real memory size"
> Don't make this larger than the real memory, in my experience that will
> cause the system to not boot properly into multi-user.
> At 11:06 AM 3/9/2007, Dima Sorkin wrote:
> On FreeBSD 6.2 i386 with 2GB of physical memory I can't allocate
> more than 500Mb for my program.
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