Messages in this thread | | | From | Maxim Levitsky <> | Subject | Re: [RFT] Port 0x80 I/O speed | Date | Wed, 12 Dec 2007 02:14:21 +0200 |
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On Wednesday 12 December 2007 01:44:42 Rene Herman wrote: > On 12-12-07 00:40, Maxim Levitsky wrote: > > > maxim@MAIN:~/tmp$ sudo ./port800 > > cycles: out 1767, in 1147 > > maxim@MAIN:~/tmp$ sudo ./port800 > > cycles: out 1774, in 1148 > > maxim@MAIN:~/tmp$ sudo ./port800 > > cycles: out 1769, in 1150 > > maxim@MAIN:~/tmp$ sudo ./port800 > > cycles: out 1769, in 1150 > > maxim@MAIN:~/tmp$ sudo ./port800 > > cycles: out 1777, in 1150 > > maxim@MAIN:~/tmp$ sudo ./port800 > > cycles: out 1766, in 1149 > > maxim@MAIN:~/tmp$ sudo ./port800 > > cycles: out 1768, in 1148 > > maxim@MAIN:~/tmp$ sudo ./port800 > > cycles: out 1765, in 1147 > > > > > > Core 2 Duo system (ICH8/Intel DG965RY motherboard) > > 1.8 Ghz? > > Rene. > >
2.1 GHZ. but usually reduced by EIST to 1.5 GHz (It can have just two values above)
I did the tests again:
CPU frequency locked to 2128.000 Mhz: maxim@MAIN:~/tmp$ sudo ./port800 cycles: out 1650, in 1065 maxim@MAIN:~/tmp$ sudo ./port800 cycles: out 1648, in 1066 maxim@MAIN:~/tmp$ sudo ./port800 cycles: out 1649, in 1065 maxim@MAIN:~/tmp$ sudo ./port800 cycles: out 1648, in 1065 maxim@MAIN:~/tmp$
CPU frequency locked to: 1596.000 Mhz maxim@MAIN:~/tmp$ sudo ./port800 cycles: out 1730, in 1138 maxim@MAIN:~/tmp$ sudo ./port800 cycles: out 1730, in 1138 maxim@MAIN:~/tmp$ sudo ./port800 cycles: out 1735, in 1140 maxim@MAIN:~/tmp$ sudo ./port800 cycles: out 1734, in 1139 maxim@MAIN:~/tmp$ sudo ./port800 cycles: out 1734, in 1138 maxim@MAIN:~/tmp$ 2128.000
A bit strange, isn't it? Regards, Maxim Levitsky
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