As I recall, the latency numbers on the D525MW with hyperthreading
turned on are about 2X of when hyperthreading is turned off.
I noticed on Intels website that the new Atom chipsets that are
replacing the Cedarview chipsets do not support hyperthreading.
Dave
On 10/24/2013 10:10 AM, Gene Heskett wrote:
> On Thursday 24 October 2013 09:37:50 Dave Cole did opine:
>
>> Those were my first thoughts !! :-(
>>
>> You might want to reflash the bios ... seriously. I had to do that to
>> one D525MW board that was acting strange.
>>
> I did it to both before ever starting the install. Bought about 9 months
> apart, the first one sits totally idle till I turn on the
> monitor to do something. The newer one pulses the drive access led at
> nominally 1.1 second intervals, on a 24/7/365 basis. And it
> crashes more often when stopping lcnc. Both do, but the newer one does it 3x
> more often.
>
>> Hey, about that spying on Angela Merkel's cell phone .... they were
>> probably just looking for some juicy gossip...
>> No worries... right ?? :-/
> I would like to have been a bug in the earpiece of BO's phone when Angela
> called. I could probably have learned some profane new ways to question
> BO's family tree, in German and English. And it does need questioned.
>
> Unforch, this is not answering the OP's question, not even on topic to it.
>
> We should be asking if he has turned hyperthreading off in the bios, and
> what extra arguments if any he is using on his grub.cfg kernel line.
>
> Hyperthreading needs to be off, as evidenced by the demsg output only
> listing 2 cores, not 4, and the "linux" line in his /boot/grub/grub.cfg
> entry needs to read:
>
> menuentry 'Ubuntu, with Linux 2.6.32-122-rtai' --class ubuntu --class
> gnu-linux --class gnu --class os {
> recordfail
> insmod ext2
> set root='(hd0,1)'
> search --no-floppy --fs-uuid --set 06cb5bee-dd7e-42be-a4b6-d42fbdf5ce0c
> linux /boot/vmlinuz-2.6.32-122-rtai
> root=UUID=06cb5bee-dd7e-42be-a4b6-d42fbdf5ce0c ro quiet splash isolcpus=1
> initrd /boot/initrd.img-2.6.32-122-rtai
> }
>
> Note the isolcpus=1 on the end of the 'linux' line, it has to be hand
> edited into that file after the installation is done, and then rebooted
> again to enable it. The UUID's should be different from the above.
>
>> Dave - semi secure in the US of A
>>
>> On 10/23/2013 1:11 PM, Bas Laarhoven wrote:
>>> BIOS embedded NSA functions need more processing time outside of the
>>> US ?
>>>
>>> -- Bas
>>>
>>> On 23-10-2013 18:54, Don Stanley wrote:
>>>> Anyone have a technical guess why the Intel D525MW
>>>> boards are not performing well in Germany?
>>>>
>>>> On Sat, Oct 19, 2013 at 5:58 PM, andy pugh <[email protected]> wrote:
>>>>> On 19 October 2013 08:42, Sven Wesley <[email protected]> wrote:
>>>>>> When I bought them there was a long debate about their performance
>>>>>> here
>>>>> at
>>>>>
>>>>>> the list. With a few tweaks suggested from others I could get them
>>>>> running
>>>>>
>>>>>> the thread test at 7000 for a short period of time and all of a
>>>>>> sudden everything jumped up to a good 26 000, at its best I got
>>>>>> one test run to stay at 15 000 without stressing it too much.
>>>>> Having said that, 26k is no problem at all for an FPGA board based
>>>>> system. (Though it isn't anything like as good as the numbers
>>>>> normally claimed)
>>>>>
>>>>> --
>>>>> atp
>>>>> If you can't fix it, you don't own it.
>>>>> http://www.ifixit.com/Manifesto
>>>>>
>>>>>
>>>>> --------------------------------------------------------------------
>>>>> ---------- October Webinars: Code for Performance
>>>>> Free Intel webinars can help you accelerate application performance.
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>> ------ October Webinars: Code for Performance
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>
> Cheers, Gene
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