Conroe core2duo....i586 or x64.......... - Mandriva

This is a discussion on Conroe core2duo....i586 or x64.......... - Mandriva ; ....are a lot of you cats using the x64 for the dual core Conroes?....i noticed 2007.1 is out, should a guy be going with 64 bit?, any caveats i should think about? thx & rgds....

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Thread: Conroe core2duo....i586 or x64..........

  1. Conroe core2duo....i586 or x64..........

    ....are a lot of you cats using the x64 for the dual core Conroes?....i
    noticed 2007.1 is out, should a guy be going with 64 bit?, any caveats i
    should think about? thx & rgds.

  2. Re: Conroe core2duo....i586 or x64..........

    I have a e6700 dual core. I am sticking with the 32bit version right
    now. I have seen some benchmarks (forgot where, maybe a google might
    help) and 64bit didn't wow me. . 64bit was only a little bit faster. I
    don't want to go to 64bit and have to deal with the programs (flash for
    one) that are not compiled for 64bit. The cool thing is that the stock
    kernel with Mandriva 2007 32bit will take advantage of the dual core.
    You can run many programs and the OS will take care of the load.
    Programs like mencoder and avidemux can use multiple threads. I had top
    running once. I played doom3 and encoded a video. Both programs got
    what they needed

    On Tue, 17 Apr 2007 15:27:28 -0500, Andyman wrote:

    > ...are a lot of you cats using the x64 for the dual core Conroes?....i
    > noticed 2007.1 is out, should a guy be going with 64 bit?, any caveats i
    > should think about? thx & rgds.


  3. Re: Conroe core2duo....i586 or x64..........

    .....thx a lot for the reply, yah i went ahead and installed the x86-64 and
    straight away i started having issues that i never had before, so i just
    whipped the i586 back onto it. So with the stock kernel i'm ok with an
    e6600?....i was eying up them enterprise kernels but probably no need from
    what your saying?...i also have 4 gig of rams.

  4. Re: Conroe core2duo....i586 or x64..........

    the 4GIG of ram bothers me though. I have only 2GB
    check with this command
    free -m
    free -m
    total used free shared buffers cached
    Mem: 2010 1775 235 0 46 1430
    -/+ buffers/cache: 298 1712
    Swap: 4651 0 4651

    As you can see total 2010. OS sees all of my memory 2GB


    > ....thx a lot for the reply, yah i went ahead and installed the x86-64
    > and straight away i started having issues that i never had before, so i
    > just whipped the i586 back onto it. So with the stock kernel i'm ok with
    > an e6600?....i was eying up them enterprise kernels but probably no need
    > from what your saying?...i also have 4 gig of rams.


  5. Re: Conroe core2duo....i586 or x64..........

    Hmmm, this is odd, mine gives me this.....

    total used free shared buffers cached
    Mem: 3289 3095 193 0 123 2172
    -/+ buffers/cache: 799 2489
    Swap: 7993 0 7993

    .......drat, that doesn't look so hot....shouldn't the stock kern be ok up
    to 4gb?, could a mobo bios setting influence this somehow?.....this is a
    brand new Intel 975X xbx2 mobo.









    On Fri, 20 Apr 2007 04:19:36 +0000, Asis wrote:

    > the 4GIG of ram bothers me though. I have only 2GB
    > check with this command
    > free -m
    > free -m
    > total used free shared buffers cached
    > Mem: 2010 1775 235 0 46 1430
    > -/+ buffers/cache: 298 1712
    > Swap: 4651 0 4651
    >
    > As you can see total 2010. OS sees all of my memory 2GB
    >
    >
    >> ....thx a lot for the reply, yah i went ahead and installed the x86-64
    >> and straight away i started having issues that i never had before, so i
    >> just whipped the i586 back onto it. So with the stock kernel i'm ok with
    >> an e6600?....i was eying up them enterprise kernels but probably no need
    >> from what your saying?...i also have 4 gig of rams.


  6. Re: Conroe core2duo....i586 or x64..........

    This is where is gets a little sticky. 32bit systems have a max of 4GB.
    You may have to try the enterprise kernel to see if all memory is
    recognized. I wish I could give you a better answer. I know that if you
    went 64bit then you would be fine, on memory anyway, but then you get are
    all your programs going to work.

    On Fri, 20 Apr 2007 12:46:39 -0500, Andyman wrote:

    > Hmmm, this is odd, mine gives me this.....
    >
    > total used free shared buffers
    > cached
    > Mem: 3289 3095 193 0 123
    > 2172 -/+ buffers/cache: 799 2489 Swap: 7993
    > 0 7993
    >
    > ......drat, that doesn't look so hot....shouldn't the stock kern be ok
    > up to 4gb?, could a mobo bios setting influence this somehow?.....this
    > is a brand new Intel 975X xbx2 mobo.
    >


  7. Re: Conroe core2duo....i586 or x64..........

    more info here
    http://wiki.mandriva.com/en/Releases...iva/2007/Notes

    There are no longer separate kernels for systems with more than one
    processor core (the -smp kernels). All three kernels include support for
    multiple processor cores. At boot time, the kernel will detect whether
    multiple processors are present and enable or disable SMP support as
    appropriate.

    Warning: the PAE addressing mode previously available with standard
    Mandriva 2006 kernels is now only available in "kernel-enterprise". This
    in particular affects systems with more than 4GB of memory, which should
    use kernel-enterprise.

    The optimal kernel "flavor" is automatically selected by the Mandriva
    Installer. Similarly, Mandriva Linux 2006 users should be migrated
    transparently to the right kernel with the installer-based upgrade
    procedure.

    For users performing a manual upgrade, the recommended upgrade path is as
    follows:

    * users of kernel-2.6.12.x, who do not require PAE, can move to the
    kernel-2.6.17.x release
    * users of kernel-2.6.12.x, who do require PAE support, must move to
    the kernel-enterprise-2.6.17.x release
    * users of kernel-i586-up-1GB-2.6.12.x should move to the kernel-
    legacy-2.6.17.x release
    * users of kernel-i686-up-4GB-2.6.12.x should move to the standard
    kernel release


    Even though you have 4GB, the regular kernel will only use 3Gb of it.
    The PAE is used by the kernel-enterprise. This means that you can still
    use the 32bit version. Worth a try anyway. Also you better make sure
    you download the sources and make sure you can boot to other kernels if
    you need to.

  8. Re: Conroe core2duo....i586 or x64..........

    ....thx, ok i guess i'll try the i586 enterp kern & see what that duz with
    my 4 stix of 1gb ram...


    On Fri, 20 Apr 2007 21:33:23 +0000, Asis wrote:

    > more info here
    > http://wiki.mandriva.com/en/Releases...iva/2007/Notes
    >
    > There are no longer separate kernels for systems with more than one
    > processor core (the -smp kernels). All three kernels include support for
    > multiple processor cores. At boot time, the kernel will detect whether
    > multiple processors are present and enable or disable SMP support as
    > appropriate.
    >
    > Warning: the PAE addressing mode previously available with standard
    > Mandriva 2006 kernels is now only available in "kernel-enterprise". This
    > in particular affects systems with more than 4GB of memory, which should
    > use kernel-enterprise.
    >
    > The optimal kernel "flavor" is automatically selected by the Mandriva
    > Installer. Similarly, Mandriva Linux 2006 users should be migrated
    > transparently to the right kernel with the installer-based upgrade
    > procedure.
    >
    > For users performing a manual upgrade, the recommended upgrade path is as
    > follows:
    >
    > * users of kernel-2.6.12.x, who do not require PAE, can move to the
    > kernel-2.6.17.x release
    > * users of kernel-2.6.12.x, who do require PAE support, must move to
    > the kernel-enterprise-2.6.17.x release
    > * users of kernel-i586-up-1GB-2.6.12.x should move to the kernel-
    > legacy-2.6.17.x release
    > * users of kernel-i686-up-4GB-2.6.12.x should move to the standard
    > kernel release
    >
    >
    > Even though you have 4GB, the regular kernel will only use 3Gb of it.
    > The PAE is used by the kernel-enterprise. This means that you can still
    > use the 32bit version. Worth a try anyway. Also you better make sure
    > you download the sources and make sure you can boot to other kernels if
    > you need to.


  9. Re: Conroe core2duo....i586 or x64..........

    ....no joy in mudville, i'm running the enterprise kernel now
    and my free-m readout is unchanged...crazy...

  10. Re: Conroe core2duo....i586 or x64..........

    On Fri, 20 Apr 2007 17:58:33 -0500, Andyman wrote:

    > ...no joy in mudville, i'm running the enterprise kernel now and my
    > free-m readout is unchanged...crazy...


    Your not giving up are you? I have another idea.

    http://kbase.redhat.com/faq/FAQ_80_4017.shtm

    OKay, so first, you have to have the enterprise kernel. Next we need to
    add line to lilo.conf. It is okay if you are running grub, because it
    works the same way just go to grub directory in /boot/grub/menu.lst
    IO don't know which one you are using.

    In order to enable LILO to detect 4GB of RAM add the following line
    mem=4096 below the install=/boot/boot.b line in /etc/lilo.conf file. Your
    updated file should look something similar to the following:

    prompt
    timeout=50
    default=linux
    boot=/dev/hda
    map=/boot/map
    install=/boot/boot.b
    mem=4096 <----------- That's it
    linear


    One more thing do this command

    cat /proc/cpuinfo


    processor : 0
    vendor_id : GenuineIntel
    cpu family : 6
    model : 15
    model name : Intel(R) Core(TM)2 CPU 6700 @ 2.66GHz
    stepping : 6
    cpu MHz : 2660.000
    cache size : 4096 KB
    physical id : 0
    siblings : 2
    core id : 0
    cpu cores : 2
    fdiv_bug : no
    hlt_bug : no
    f00f_bug : no
    coma_bug : no
    fpu : yes
    fpu_exception : yes
    cpuid level : 10
    wp : yes
    flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
    mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm
    constant_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr lahf_lm
    bogomips : 5338.98

    processor : 1
    vendor_id : GenuineIntel
    cpu family : 6
    model : 15
    model name : Intel(R) Core(TM)2 CPU 6700 @ 2.66GHz
    stepping : 6
    cpu MHz : 2660.000
    cache size : 4096 KB
    physical id : 0
    siblings : 2
    core id : 1
    cpu cores : 2
    fdiv_bug : no
    hlt_bug : no
    f00f_bug : no
    coma_bug : no
    fpu : yes
    fpu_exception : yes
    cpuid level : 10
    wp : yes ============
    flags : fpu vme de pse tsc msr --->pae<--- mce cx8 apic sep
    mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm
    pbe nx lm constant_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr lahf_lm
    bogomips : 5333.66



    notice that in the flags you see pae

    just make sure your cpu has that flag

  11. Re: Conroe core2duo....i586 or x64..........

    On Fri, 20 Apr 2007 17:58:33 -0500, Andyman wrote:

    > ...no joy in mudville, i'm running the enterprise kernel now and my
    > free-m readout is unchanged...crazy...

    after a boot and you will need to be in root to do this command

    dmesg | more


    Linux version 2.6.17-13mdv (qateam@mercury.mandriva.com) (gcc version
    4.1.1 20060724 (prere
    lease) (4.1.1-3mdk)) #1 SMP Fri Mar 23 13:07:21 MDT 2007
    BIOS-provided physical RAM map:
    BIOS-e820: 0000000000000000 - 000000000009fc00 (usable)
    BIOS-e820: 000000000009fc00 - 00000000000a0000 (reserved)
    BIOS-e820: 00000000000e4000 - 0000000000100000 (reserved)
    BIOS-e820: 0000000000100000 - 000000007ef90000 (usable)
    BIOS-e820: 000000007ef90000 - 000000007ef9e000 (ACPI data)
    BIOS-e820: 000000007ef9e000 - 000000007efe0000 (ACPI NVS)
    BIOS-e820: 000000007efe0000 - 000000007f000000 (reserved)
    BIOS-e820: 00000000fee00000 - 00000000fee01000 (reserved)
    BIOS-e820: 00000000ffb00000 - 0000000100000000 (reserved)
    1135MB HIGHMEM available.
    895MB LOWMEM available.
    found SMP MP-table at 000ff780
    On node 0 totalpages: 520080
    DMA zone: 4096 pages, LIFO batch:0
    Normal zone: 225279 pages, LIFO batch:31
    HighMem zone: 290705 pages, LIFO batch:31
    DMI 2.4 present.


    notice that I have 1135 HIGH and 895 LOW 2030 total
    Check yours before and after you add the mem=4096

  12. Re: Conroe core2duo....i586 or x64..........

    On Sat, 21 Apr 2007 02:12:01 +0000, Asis wrote:

    > On Fri, 20 Apr 2007 17:58:33 -0500, Andyman wrote:
    >
    >> ...no joy in mudville, i'm running the enterprise kernel now and my
    >> free-m readout is unchanged...crazy...

    >
    > Your not giving up are you? I have another idea.
    >
    > http://kbase.redhat.com/faq/FAQ_80_4017.shtm
    >
    > OKay, so first, you have to have the enterprise kernel. Next we need to
    > add line to lilo.conf. It is okay if you are running grub, because it
    > works the same way just go to grub directory in /boot/grub/menu.lst
    > IO don't know which one you are using.
    >
    > In order to enable LILO to detect 4GB of RAM add the following line
    > mem=4096 below the install=/boot/boot.b line in /etc/lilo.conf file. Your
    > updated file should look something similar to the following:
    >
    > prompt
    > timeout=50
    > default=linux
    > boot=/dev/hda
    > map=/boot/map
    > install=/boot/boot.b
    > mem=4096 <----------- That's it
    > linear
    >
    >
    > One more thing do this command
    >
    > cat /proc/cpuinfo
    >
    >
    > processor : 0
    > vendor_id : GenuineIntel
    > cpu family : 6
    > model : 15
    > model name : Intel(R) Core(TM)2 CPU 6700 @ 2.66GHz
    > stepping : 6
    > cpu MHz : 2660.000
    > cache size : 4096 KB
    > physical id : 0
    > siblings : 2
    > core id : 0
    > cpu cores : 2
    > fdiv_bug : no
    > hlt_bug : no
    > f00f_bug : no
    > coma_bug : no
    > fpu : yes
    > fpu_exception : yes
    > cpuid level : 10
    > wp : yes
    > flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
    > mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm
    > constant_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr lahf_lm
    > bogomips : 5338.98
    >
    > processor : 1
    > vendor_id : GenuineIntel
    > cpu family : 6
    > model : 15
    > model name : Intel(R) Core(TM)2 CPU 6700 @ 2.66GHz
    > stepping : 6
    > cpu MHz : 2660.000
    > cache size : 4096 KB
    > physical id : 0
    > siblings : 2
    > core id : 1
    > cpu cores : 2
    > fdiv_bug : no
    > hlt_bug : no
    > f00f_bug : no
    > coma_bug : no
    > fpu : yes
    > fpu_exception : yes
    > cpuid level : 10
    > wp : yes ============
    > flags : fpu vme de pse tsc msr --->pae<--- mce cx8 apic sep
    > mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm
    > pbe nx lm constant_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr lahf_lm
    > bogomips : 5333.66
    >
    >
    >
    > notice that in the flags you see pae
    >
    > just make sure your cpu has that flag


    ....give up, me?? .....dude, where's my ram? hay thx for the
    suggestions, i'm running grub, i went into /boot/grub/menu.lst & i had
    mem=4098M for every kernel option already......dunno where the '98' came
    from, changed em all to 4096M fwiw.

    Did the /cat/proc/cpuinfo and it confirmed the pae flag for both cores.

    Oddly enough when i did a dmesg | more right after the above i had a HI &
    LOMEM total of about 4097....so i thought that's odd, could the 98 have
    confused the issue versus the 96 as in 4096....& shouldn't i have to
    reboot before any of this matters?

    After a reboot into enterprise once more dmesg | more reveals HI+LO=3250
    roughly......man, this is turning into a can of worms.

  13. Re: Conroe core2duo....i586 or x64..........

    Weird, just weird. So if you changed grub back to mem=4098M what
    happens? It seems that it worked there lo+high=4097. Maybe it was good
    already


    >
    > ...give up, me?? .....dude, where's my ram? hay thx for the
    > suggestions, i'm running grub, i went into /boot/grub/menu.lst & i had
    > mem=4098M for every kernel option already......dunno where the '98' came
    > from, changed em all to 4096M fwiw.
    >
    > Did the /cat/proc/cpuinfo and it confirmed the pae flag for both cores.
    >
    > Oddly enough when i did a dmesg | more right after the above i had a HI
    > & LOMEM total of about 4097....so i thought that's odd, could the 98
    > have confused the issue versus the 96 as in 4096....& shouldn't i have
    > to reboot before any of this matters?
    >
    > After a reboot into enterprise once more dmesg | more reveals HI+LO=3250
    > roughly......man, this is turning into a can of worms.


  14. Re: Conroe core2duo....i586 or x64..........

    ......yah i don't get it, but that wouldn't be the first time....i'm
    gonna try that again shortly & i think i may try the lilo bootloader see
    if that duz anything....i was reading online about grub related issues re
    ram 'detection'....


    On Sat, 21 Apr 2007 05:42:09 +0000, Asis wrote:

    > Weird, just weird. So if you changed grub back to mem=4098M what
    > happens? It seems that it worked there lo+high=4097. Maybe it was good
    > already
    >
    >
    >>
    >> ...give up, me?? .....dude, where's my ram? hay thx for the
    >> suggestions, i'm running grub, i went into /boot/grub/menu.lst & i had
    >> mem=4098M for every kernel option already......dunno where the '98' came
    >> from, changed em all to 4096M fwiw.
    >>
    >> Did the /cat/proc/cpuinfo and it confirmed the pae flag for both cores.
    >>
    >> Oddly enough when i did a dmesg | more right after the above i had a HI
    >> & LOMEM total of about 4097....so i thought that's odd, could the 98
    >> have confused the issue versus the 96 as in 4096....& shouldn't i have
    >> to reboot before any of this matters?
    >>
    >> After a reboot into enterprise once more dmesg | more reveals HI+LO=3250
    >> roughly......man, this is turning into a can of worms.


  15. Re: Conroe core2duo....i586 or x64..........

    .......i think i may try the x86_64 again and try a li'l harder to work
    out some of the issues i had...i'm just getting nowhere fast.

    I also found another issue, let's say i delete a large raft of
    files....like a bunch of rars that comprise a dvd.......dead
    slow....probably at least 10X as slow as it should be, but my hdparm -tT
    seems to be on spec for my sata2 drives.

  16. Re: Conroe core2duo....i586 or x64..........

    On Sun, 22 Apr 2007 12:48:49 -0400, Andyman wrote:

    > I also found another issue, let's say i delete a large raft of
    > files....like a bunch of rars that comprise a dvd.......dead
    > slow....probably at least 10X as slow as it should be, but my hdparm -tT
    > seems to be on spec for my sata2 drives.


    What does "hdparm -i /dev/xxx" show for the access mode (pio/dma/udma),
    and for MaxMultSect, MultSect?

    Regards, Dave Hodgins

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