Date: Fri, 09 Mar 2007 09:50:42 -0600 From: Derek Ragona <derek@computinginnovations.com> To: "Dima Sorkin" <dima.sorkin@gmail.com>, freebsd-questions@freebsd.org Subject: Re: limitiation on memory allocation Message-ID: <6.0.0.22.2.20070309094909.024c9dd0@mail.computinginnovations.com> In-Reply-To: <e40293600703090632v3f25742g16e75708ded632ee@mail.gmail.com > References: <e40293600703090632v3f25742g16e75708ded632ee@mail.gmail.com>
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check out your sysctl values.
man sysctl
for more information.
-Derek
At 08:32 AM 3/9/2007, Dima Sorkin wrote:
>Hi.
>
>On FreeBSD 6.2 i386 with 2GB of physical memory I can't allocate
>more than 500Mb for my program.
>
>I'm a new to FreeBSD. Is this limitatin is something known,
>how do I overcome it ?
>
>(On linuxes I can allocate arrays of size close to sum
>of physical and swap memory, on similar machines)
>
>Thank you and regards,
>Dima.
>
>$ top
>...
>Mem: 65M Active, 357M Inact, 142M Wired, 404K Cache, 112M Buf, 1437M Free
>Swap: 4070M Total, 4070M Free
>...
>
>test code:
>-------------------------------------------------------
>#include<vector>
>#include<boost/shared_array.hpp>
>
>const unsigned M = 1024*1024;
>const unsigned X = 510; // will fail with X > 510
>
>int main() {
> std::vector<char> huge_v1(X*M); // fails in both ways
> // boost::shared_array<char> huge( new char[X*M] );
>}
>-------------------------------------------------------
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