* Bogomips?
@ 2005-04-06 13:12 David Frascone
2005-04-06 13:53 ` Bogomips? Greg Weeks
0 siblings, 1 reply; 4+ messages in thread
From: David Frascone @ 2005-04-06 13:12 UTC (permalink / raw)
To: linuxppc-dev
Can this be right? I'm getting This from a MPC-8260 (/proc/cpuinfo):
------------------------------------------------
cpu : 82xx
core clock : 199 MHz
CPM clock : 133 MHz
bus clock : 33 MHz
revision : 1.1 (pvr 0081 0101)
bogomips : 133.12
------------------------------------------------
And this from a MPC-8540
------------------------------------------------
cpu : e500
revision : 2.0 (pvr 8020 0020)
bogomips : 190.05
Vendor : Motorola SPS
Machine : mpc8540ads
bus freq : 666.666660 MHz
PVR : 0x80200020
SVR : 0x80300020
PLL setting : 0x4
Memory : 512 MB
------------------------------------------------
The second one looks way low . . . any ideas?
-Dave
--
David Frascone
Gimme back my face! You're getting it ugly.
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Bogomips?
2005-04-06 13:12 Bogomips? David Frascone
@ 2005-04-06 13:53 ` Greg Weeks
2005-04-06 19:29 ` Bogomips? David Frascone
0 siblings, 1 reply; 4+ messages in thread
From: Greg Weeks @ 2005-04-06 13:53 UTC (permalink / raw)
To: David Frascone; +Cc: linuxppc-dev
David Frascone wrote:
>Can this be right? I'm getting This from a MPC-8260 (/proc/cpuinfo):
>
>------------------------------------------------
>cpu : 82xx
>core clock : 199 MHz
>CPM clock : 133 MHz
>bus clock : 33 MHz
>revision : 1.1 (pvr 0081 0101)
>bogomips : 133.12
>------------------------------------------------
>
>And this from a MPC-8540
>------------------------------------------------
>cpu : e500
>revision : 2.0 (pvr 8020 0020)
>bogomips : 190.05
>Vendor : Motorola SPS
>Machine : mpc8540ads
>bus freq : 666.666660 MHz
>PVR : 0x80200020
>SVR : 0x80300020
>PLL setting : 0x4
>Memory : 512 MB
>------------------------------------------------
>
>
>The second one looks way low . . . any ideas?
>
>
Do you have cache turned on? Do you have branch prediction turned on?
Branch prediction would be my guess as it's easy to miss.
Greg Weeks
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Bogomips?
2005-04-06 13:53 ` Bogomips? Greg Weeks
@ 2005-04-06 19:29 ` David Frascone
0 siblings, 0 replies; 4+ messages in thread
From: David Frascone @ 2005-04-06 19:29 UTC (permalink / raw)
To: Greg Weeks; +Cc: linuxppc-dev
That nailed it (branch prediction)!
------------------------------------------------
# cat /proc/cpuinfo
cpu : e500
revision : 2.0 (pvr 8020 0020)
bogomips : 665.19
Vendor : Motorola SPS
Machine : mpc8540ads
bus freq : 666.666660 MHz
PVR : 0x80200020
SVR : 0x80300020
PLL setting : 0x4
Memory : 512 MB
------------------------------------------------
Thanks!
-Dave
On Wed, 06 Apr 2005 09:53:15 -0400
Greg Weeks <greg.weeks@timesys.com> wrote:
> David Frascone wrote:
>
> >Can this be right? I'm getting This from a MPC-8260 (/proc/cpuinfo):
> >
> >------------------------------------------------
> >cpu : 82xx
> >core clock : 199 MHz
> >CPM clock : 133 MHz
> >bus clock : 33 MHz
> >revision : 1.1 (pvr 0081 0101)
> >bogomips : 133.12
> >------------------------------------------------
> >
> >And this from a MPC-8540
> >------------------------------------------------
> >cpu : e500
> >revision : 2.0 (pvr 8020 0020)
> >bogomips : 190.05
> >Vendor : Motorola SPS
> >Machine : mpc8540ads
> >bus freq : 666.666660 MHz
> >PVR : 0x80200020
> >SVR : 0x80300020
> >PLL setting : 0x4
> >Memory : 512 MB
> >------------------------------------------------
> >
> >
> >The second one looks way low . . . any ideas?
> >
> >
> Do you have cache turned on? Do you have branch prediction turned on?
> Branch prediction would be my guess as it's easy to miss.
>
> Greg Weeks
>
--
David Frascone
Closed Hearing for the Caption Impaired...
^ permalink raw reply [flat|nested] 4+ messages in thread
* RE: Bogomips?
@ 2005-04-06 13:53 Rune Torgersen
0 siblings, 0 replies; 4+ messages in thread
From: Rune Torgersen @ 2005-04-06 13:53 UTC (permalink / raw)
To: David Frascone, linuxppc-dev
It's way low...
(output from a 8560 on 2.6.11):
cpu : e500
revision : 2.0 (pvr 8020 0020)
bogomips : 823.29
Vendor : Freescale Semiconductor
Machine : mpc8560ads
clock : 825MHz
PVR : 0x80200020
SVR : 0x80700020
PLL setting : 0x5
Memory : 256 MB=20
The 8260 one seems correct
cpu : 82xx
revision : 16.20 (pvr 8081 1014)
bogomips : 191.48
core clock : 289 MHz
CPM clock : 206 MHz
bus clock : 82 MHz
> -----Original Message-----
> From: linuxppc-dev-bounces@ozlabs.org=20
> [mailto:linuxppc-dev-bounces@ozlabs.org] On Behalf Of David Frascone
> Sent: Wednesday, April 06, 2005 08:12
> To: linuxppc-dev@ozlabs.org
> Subject: Bogomips?
>=20
>=20
> Can this be right? I'm getting This from a MPC-8260 (/proc/cpuinfo):
>=20
> ------------------------------------------------
> cpu : 82xx
> core clock : 199 MHz
> CPM clock : 133 MHz
> bus clock : 33 MHz
> revision : 1.1 (pvr 0081 0101)
> bogomips : 133.12
> ------------------------------------------------
>=20
> And this from a MPC-8540
> ------------------------------------------------
> cpu : e500
> revision : 2.0 (pvr 8020 0020)
> bogomips : 190.05
> Vendor : Motorola SPS
> Machine : mpc8540ads
> bus freq : 666.666660 MHz
> PVR : 0x80200020
> SVR : 0x80300020
> PLL setting : 0x4
> Memory : 512 MB
> ------------------------------------------------
>=20
>=20
> The second one looks way low . . . any ideas?
>=20
> -Dave
>=20
> --=20
> David Frascone
>=20
> Gimme back my face! You're getting it ugly.
> _______________________________________________
> Linuxppc-dev mailing list
> Linuxppc-dev@ozlabs.org
> https://ozlabs.org/mailman/listinfo/linuxppc-dev
>=20
>=20
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2005-04-06 19:29 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2005-04-06 13:12 Bogomips? David Frascone
2005-04-06 13:53 ` Bogomips? Greg Weeks
2005-04-06 19:29 ` Bogomips? David Frascone
-- strict thread matches above, loose matches on Subject: below --
2005-04-06 13:53 Bogomips? Rune Torgersen
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).