[yocto] Server specs for a continuous integration system

[Khem Raj]

On Sep 3, 2013, at 8:47 PM, Elvis Dowson <elvis.dowson at gmail.com> wrote:

> 
> 
>> On Sep 4, 2013, at 6:45 AM, Christian Gagneraud <chgans at gna.org> wrote:
>> 
>>> On 04/09/13 07:22, Chris Tapp wrote:
>>> 
>>>> On 3 Sep 2013, at 00:29, Christian Gagneraud wrote:
>>>> 
>>>>> On 03/09/13 10:16, Chris Tapp wrote:
>>>>>> On 2 Sep 2013, at 22:45, Christian Gagneraud wrote:
>>>>>> 
>>>>>> 
>>>>>> On 03/09/13 00:35, Burton, Ross wrote:
>>>>>> 
>>>>>> Hi Ross,
>>>>>> 
>>>>>>>> On 2 September 2013 06:05, Christian Gagneraud <chgans at gna.org> wrote:
>>>>>>>> So right now, I'm thinking about:
>>>>>>>> - CPU: Xeon E5, maybe 2 x E5-2670/90, for a total of 16 cores (32 threads)
>>>>>>>> - Hard drives: 500GB, 1 TB or 2 TB (ideally with RAID if it can speed up the
>>>>>>>> builds)
>>>>>> 
>>>>>> RAID-5 seems to be what i am after.
>>>> 
>>>> Hi Chris,
>>>> 
>>>>> Isn't RAID-5 going to be slower, especially if it's software? RAID 1
>>>>> is probably better as you'll potentially double the write speed to disk.
>>>>> I use a couple of Vertex SSDs in RAID 1 giving a theoretical write speed
>>>>> near to 1GBs. Write endurance is possibly a concern, but I've not had
>>>>> any issues using them on a local build machine. I would probably look at
>>>>> some higher end models if I was going to run a lot of builds. A lot less
>>>>> noise than hard drives ;-)
>>>> 
>>>> Thanks for the info, i will have a look at RAID-1, as you can see, I know absolutely nothing about RAID! ;)


you want RAID-1 if you want full redundancy. so if 1 of the disks die then you are still OK. This is generally slow
since data is written to two locations. For faster build you would want RAID-0 striped so the writes happen in parallel
to both disks but if any of the disks go away the whole data is lost.

>>> 
>>> Did you see my correction to this? I meant to say RAID 0. Sorry for the confusion.
>> 
>> No problem, at least it forces me to look at RAID-5, RAID-1 and now RAID-0, thanks! ;)
> 
> Sorry, my setup is a RAID0 striped SSDx2 configuration as well, not RAID1. I have a 3TB standard drive for performing backup, since I can lose data anytime, if any one of the drives fail.
> 
> The cooling solution is from Corsair, and it's easy to install.
> 
> I think, CPU motherboard, SSD, RAM, case, power supply, etc was well within USD$ 1500.
> 
> The apple display was the most expensive component.
> 
> The Mac Pro, when it comes out would be a perfect build server, though, with PCIe SSD, XEON CPUs, etc.
> 
> Elvis Dowson
> 
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