Date: Wed, 15 Jan 2003 21:15:22 -0500 From: Chuck Swiger <cswiger@mac.com> To: freebsd-questions@FreeBSD.ORG Cc: Frank Li <frank19991@hotmail.com> Subject: Re: Increase memory limit ? Message-ID: <3E2615BA.8060407@mac.com> References: <F73s8iwLOMwd26OUDxT0001779d@hotmail.com>
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Frank Li wrote: [ ... ] > Should I add more physical memory (if so should I reinstll OS)? If you're actually doing something where the 512 MB datasize limit matters to you, adding more physical memory will almost certainly speed things up. No, don't reinstall; even Windows doesn't make you reinstall the OS just because you added memory. :-) > Can I just set some parameters(what?) and recompile kernel and increase > these limits ? 32-bit systems implementing VM typically could increase user-mode address space up to 2 GB, although variants on that and other things (ie, where devices get mapped into memory) make that only an approximation. For FreeBSD: # Certain applications can grow to be larger than the 128M limit # that FreeBSD initially imposes. Below are some options to # allow that limit to grow to 256MB, and can be increased further # with changing the parameters. MAXDSIZ is the maximum that the # limit can be set to, and the DFLDSIZ is the default value for # the limit. MAXSSIZ is the maximum that the stack limit can be # set to. You might want to set the default lower than the max, # and explicitly set the maximum with a shell command for processes # that regularly exceed the limit like INND. # options MAXDSIZ="(256*1024*1024)" options MAXSSIZ="(256*1024*1024)" options DFLDSIZ="(256*1024*1024)" Depending on what you're doing, you might well find using a 64-bit platform (Alpha hardware? Solaris on SPARC?) to be more appropriate... -Chuck To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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