[Sugar-devel] Fwd: [IAEP] Getting data about the upgrading older machines and SoaS responsiveness.

[Caroline Meeks]

Hi Sascha,

we are outside of my technical abilities but I tried to translate what you
said and put it on the wiki.  If anyone would like to expand on this please
do!

http://wiki.sugarlabs.org/go/Sugar_on_a_Stick/Hardware

Thanks

On Tue, Jun 9, 2009 at 2:52 PM, Sascha Silbe <silbe at sugarlabs.org> wrote:

> On Mon, Jun 08, 2009 at 08:10:36AM -0400, Caroline Meeks wrote:
>
>  Can you give him instructions on how to gather data if he is going to be
>> testing on school computers?
>>
>
> Measuring:
> ----------
>
> Simple stuff (using a watch to determine time to certain events /
> "milestones", e.g. activities ring showing up) usually is all you want to do
> for more than a single or at most a few computers. With some work it should
> be automatable.
>
> For advanced usage I can (at least for now) only recommend to use "dstat
> -at --output dstat.log", always in combination with taking notes of when
> which events (activity started up etc.) happened (as dstat doesn't know
> about those and thus doesn't log them).
> If run in Terminal, you can use it to analyse activities.
> To analyse system startup you need to talk to Sebastian in order to find a
> way to let dstat run as early as possible.
>
> As analysing dstat output is quite some work I recommend to do this only as
> a second step and only for a few computers.
>
>
> Classification:
> ---------------
>
> Performance usually is dependant mostly on the following factors. Using my
> desktop as an example for the output of the given commands:
>
> - processor ('cat /proc/cpuinfo')
>   - generation / connection to mainboard (Socket AM2+)
>     - can be looked up at Wikipedia
>   - cache size ("cache size: 512 KB")
>   - model ("model name: AMD Athlon(tm) X2 Dual Core Processor BE-2300")
>   - frequency ("cpu MHz: 1000.000")
>     - on modern and mobile CPUs, the value in /proc/cpuinfo ("cpu MHz")
>       can be the _current_ value instead of the maximum
> - memory size and memory bus speed ('free' for size)
>   - "Mem:       3544060" (total, is in kB)
>   - on-board graphics might take up some of the memory (e.g. 512MB in my
> case -
>     the system has 4GB)
> - hard disk speed ('hdparm -T /dev/hda /dev/sda')
>   - "Timing buffered disk reads:  226 MB in  3.01 seconds =  75.02 MB/sec"
>
>
>
> HTH.
>
> CU Sascha
>
> --
> http://sascha.silbe.org/
> http://www.infra-silbe.de/
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-- 
Caroline Meeks
Solution Grove
Caroline at SolutionGrove.com

617-500-3488 - Office
505-213-3268 - Fax
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