[cups.general] Measuring time

[ALi]

thank you

On Thu, Jul 8, 2010 at 5:19 PM, Michael Sweet <msweet at apple.com> wrote:
> On Jul 8, 2010, at 3:54 AM, ALi wrote:
>> Hello ....
>> i continue measuring time in machines for enqueue a file.
>> i have compiled succesfull in aix the cups 1.4.2 adding the
>> _cupsLangPrintError to file in cups/libcups_s.exp
>>
>>
>> now i have the problem of time. The aix is a new machine power6 with 2
>> dual core cpu (4 cores in total) at 5000 MHz the time enqueuing (lp -d
>> queue file.ps) the file is 1000 ms (more or less) and the time in
>> linux 2 intel quadcores 5430 (8cores in total) at 2.66 ghz is only 20
>> ms 22ms 40 ms ......
>> why is it so different? must i try some option in the compilation of
>> cups for aix? i have try the typical -O2 but it doesnt compile
>
> IIRC, AIX doesn't support domain sockets so we are connecting over localhost which will be slower.  Also, I think the AIX network stack in general isn't as tuned as Linux's, and in general Intel CPUs run circles around Power for integer-based operations.
>
> ________________________________________________________________________
> Michael Sweet, Senior Printing System Engineer, PWG Chair
>
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