Re: RAM not recognized
On Tue, 04 Mar 2008 04:09:32 -0600 "Paul A. Procacci" <[EMAIL PROTECTED]> wrote: > Robert Huff wrote: > > RW writes: > > > > > >> And also bear in mind that amd64 uses memory less efficiently > >> than i386 > >> > > > > Would you care to elaborate? (A pointer will do.) > > > The only 'less efficient' thing 64-bit programs have, are larger > pointers as well as other potenial data items. Though I'm not sure > I'd consider this 'less efficient'. I would say that using more memory to achieve the same thing would be a reasonable definition of "using memory less efficiently". It depends on your application, for example IIRC squid uses about 40% more memory on large caches under amd64 because of the huge linked-lists it uses for indexing. At 4GB it's not a cut and dried choice even if there are no 64-bit compatibility problems. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: RAM not recognized
-- From: "Paul A. Procacci" <[EMAIL PROTECTED]> Sent: Monday, March 03, 2008 7:45 PM To: "Cesar Amaya" <[EMAIL PROTECTED]> Cc: Subject: Re: RAM not recognized Cesar Amaya wrote: Hello every one, I have installed FreeBSD-7.0_RELEASE on Dell Power Edge 1950 Quad Core and 4GB of RAM. The problem is that FreeBSD does not recognize all of the RAM. This is part of the dmesg. # dmesg CPU: Intel(R) Xeon(R) CPU E5420 @ 2.50GHz (2496.28-MHz 686-class CPU) Origin = "GenuineIntel" Id = 0x10676 Stepping = 6 Features=0xbfebfbff Features2=0xce3bd> AMD Features=0x2010 AMD Features2=0x1 Cores per package: 4 real memory = 3484745728 (3323 MB) avail memory = 3405631488 (3247 MB) ACPI APIC Table: FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs cpu0 (BSP): APIC ID: 0 cpu1 (AP): APIC ID: 1 cpu2 (AP): APIC ID: 2 cpu3 (AP): APIC ID: 3 ioapic0: Changing APIC ID to 4 ioapic0 irqs 0-23 on motherboard Can anyone give me some light in this issue? Thank you very much!!! ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, se nd any mail to "[EMAIL PROTECTED]" Forgot to CC list This is not a problem of FreeBSD but of i386/x86 architecture which max memory limit is 4GB i theory and 3-3.5GB in practice, you can use PAE to use 36bit addressing (instead of default 32bit) for memory to get full 4GB on i386 but you will not be able to have loadable kernel modules for example, other sollution for this is using amd64/64bit FreeBSD, where you will have full 4GB and even more without any problems. for the 4 gig limit, you have to take in account that the limit is for ALL addressable memory space in the computer, this includes video card memory as well as resources necessary to run system level stuff like your IDE or SCSI controller and any extra firmware may be present on your system. if you want to use more than 3 gigs of ram, you HAVE to run AMD64/x64 version of your operating system (even windows would have same exact issue). -Sean ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: RAM not recognized
Robert Huff wrote: RW writes: And also bear in mind that amd64 uses memory less efficiently than i386 Would you care to elaborate? (A pointer will do.) Robert Huff ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]" The only 'less efficient' thing 64-bit programs have, are larger pointers as well as other potenial data items. Though I'm not sure I'd consider this 'less efficient'. Ok, so we have larger binaries and a bit more ram usage for the aforementioned, but isn't that all? I'd guess to say yes, and if it is, then that's not so bad. In fact, I don't think I'd even call is an inefficiency. My 2 cents. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: RAM not recognized
RW writes: > And also bear in mind that amd64 uses memory less efficiently > than i386 Would you care to elaborate? (A pointer will do.) Robert Huff ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: RAM not recognized
On Mon, 3 Mar 2008 19:51:42 -0500 Robert Huff <[EMAIL PROTECTED]> wrote: > > Paul A. Procacci writes: > > > AMD Features=0x2010 > > > AMD Features2=0x1 > > > Cores per package: 4 > > > real memory = 3484745728 (3323 MB) > > > avail memory = 3405631488 (3247 MB) > > > This is not a problem of FreeBSD but of i386/x86 architecture > > which max memory limit is 4GB i theory and 3-3.5GB in practice, > > you can use PAE to use 36bit addressing (instead of default > > 32bit) for memory to get full 4GB on i386 but you will not be > > able to have loadable kernel modules for example, other sollution > > for this is using amd64/64bit FreeBSD, where you will have full > > 4GB and even more without any problems. > > ... and not be able to run some ports; some won't run in > native 64 bit mode, some won't run at all. And also bear in mind that amd64 uses memory less efficiently than i386 ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: RAM not recognized
Paul A. Procacci writes: > > AMD Features=0x2010 > > AMD Features2=0x1 > > Cores per package: 4 > > real memory = 3484745728 (3323 MB) > > avail memory = 3405631488 (3247 MB) > This is not a problem of FreeBSD but of i386/x86 architecture > which max memory limit is 4GB i theory and 3-3.5GB in practice, > you can use PAE to use 36bit addressing (instead of default > 32bit) for memory to get full 4GB on i386 but you will not be > able to have loadable kernel modules for example, other sollution > for this is using amd64/64bit FreeBSD, where you will have full > 4GB and even more without any problems. ... and not be able to run some ports; some won't run in native 64 bit mode, some won't run at all. Robert Huff ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: RAM not recognized
Cesar Amaya wrote: Hello every one, I have installed FreeBSD-7.0_RELEASE on Dell Power Edge 1950 Quad Core and 4GB of RAM. The problem is that FreeBSD does not recognize all of the RAM. This is part of the dmesg. # dmesg CPU: Intel(R) Xeon(R) CPU E5420 @ 2.50GHz (2496.28-MHz 686-class CPU) Origin = "GenuineIntel" Id = 0x10676 Stepping = 6 Features=0xbfebfbff Features2=0xce3bd> AMD Features=0x2010 AMD Features2=0x1 Cores per package: 4 real memory = 3484745728 (3323 MB) avail memory = 3405631488 (3247 MB) ACPI APIC Table: FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs cpu0 (BSP): APIC ID: 0 cpu1 (AP): APIC ID: 1 cpu2 (AP): APIC ID: 2 cpu3 (AP): APIC ID: 3 ioapic0: Changing APIC ID to 4 ioapic0 irqs 0-23 on motherboard Can anyone give me some light in this issue? Thank you very much!!! ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, se nd any mail to "[EMAIL PROTECTED]" Forgot to CC list This is not a problem of FreeBSD but of i386/x86 architecture which max memory limit is 4GB i theory and 3-3.5GB in practice, you can use PAE to use 36bit addressing (instead of default 32bit) for memory to get full 4GB on i386 but you will not be able to have loadable kernel modules for example, other sollution for this is using amd64/64bit FreeBSD, where you will have full 4GB and even more without any problems. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
