HI,
My test system is an Intel Xeon. I have pasted the output of "psrinfo -pv" below
The physical processor has 2 virtual processors (0 2)
x86 (GenuineIntel 6F6 family 6 model 15 step 6 clock 2660 MHz)
Intel(r) Xeon(r) CPU 5150 @ 2.66GHz
The physical processor has 2 virtual processors (1 3)
x86 (GenuineIntel 6F6 family 6 model 15 step 6 clock 2660 MHz)
Intel(r) Xeon(r) CPU 5150 @ 2.66GHz
Thanks.
Vinay
----- Original Message -----
From: Andrei Dorofeev <[email protected]>
Date: Wednesday, July 23, 2008 6:46 pm
Subject: Re: [tesla-dev] Experiment Results on APERF/MPERF registers - Need
Clarification
To: Vinay Devadas <Vinay.Devadas at Sun.COM>
Cc: tesla-dev at opensolaris.org
> Can you describe the system are you running this test on?
> The reason I ask is because the firmware could be doing
> DVFS in the background and your assumption about
> always being in P0 might not be valid. Most HP servers
> for example ship with dynamic power management policy
> enabled by default in the BIOS.
>
> And yes, by 100% I mean that the ratio is 1. Here are
> some ACNT and MCNT readings taken at one second interval:
>
> aperf=2651211150, mperf=2651211830
> aperf=2663606070, mperf=2663641230
> aperf=2658386834, mperf=2658554550
> aperf=2644989682, mperf=2645542740
>
> As you can see the ratio between these looks pretty close
> to 1.0. This was done on 2.6Ghz Core 2 Quad 6600.
>
> - Andrei
>
> On Wed, Jul 23, 2008 at 5:50 PM, Vinay Devadas <Vinay.Devadas at sun.com>
> wrote:
> > Hi,
> >
> > The physical processor has 2 virtual processors (0 2)
> > x86 (GenuineIntel 6F6 family 6 model 15 step 6 clock 2660 MHz)
> > Intel(r) Xeon(r) CPU 5150 @ 2.66GHz
> > The physical processor has 2 virtual processors (1 3)
> > x86 (GenuineIntel 6F6 family 6 model 15 step 6 clock 2660 MHz)
> > Intel(r) Xeon(r) CPU 5150 @ 2.66GHz
> >
> > What do you mean 100% ? You mean the ratio is one ? If so can you
> send me your test file so that I can compare it with mine.
> >
> > Thanks,
> > Vinay
> >
> > ----- Original Message -----
> > From: Andrei Dorofeev <dorofeev at gmail.com>
> > Date: Wednesday, July 23, 2008 5:23 pm
> > Subject: Re: [tesla-dev] Experiment Results on APERF/MPERF registers
> - Need Clarification
> > To: Vinay Devadas <Vinay.Devadas at Sun.COM>
> > Cc: Eric Saxe <Eric.Saxe at Sun.COM>, tesla-dev at opensolaris.org
> >
> >
> >> I just tried the same test also and seeing the ratio
> >> between ACNT and MCNT at 100% when running at P0.
> >> Can you provide more details about your system and
> >> processor configuration?
> >>
> >> -Andrei
> >>
> >> On Wed, Jul 23, 2008 at 2:49 PM, Vinay Devadas <Vinay.Devadas at sun.com>
> >> wrote:
> >> > Hi Andrei,
> >> >
> >> >>Are you doing anything with throttling (T-states) at the same time?
> >> >
> >> > No.
> >> >
> >> > -vinay
> >> >
> >> > ----- Original Message -----
> >> > From: Andrei Dorofeev <dorofeev at gmail.com>
> >> > Date: Wednesday, July 23, 2008 2:44 pm
> >> > Subject: Re: [tesla-dev] Experiment Results on APERF/MPERF registers
> >> - Need Clarification
> >> > To: Vinay Devadas <Vinay.Devadas at Sun.COM>
> >> > Cc: Eric Saxe <Eric.Saxe at Sun.COM>, tesla-dev at opensolaris.org
> >> >
> >> >
> >> >> Vinay,
> >> >>
> >> >> Are you doing anything with throttling (T-states) at the same time?
> >> >>
> >> >> - Andrei
> >> >
> >
