Antony P Joseph on 17 Jun 2007 17:37:39 -0000 |
Hi I am going to purchase one device with this processor "ARM996HS". That will nip all these issues in the bud. http://www.arm.com/products/CPUs/ARM996HS.html I am not sure whether they will be successful with this With regards Antony On Sun, 2007-06-17 at 12:28 -0400, Doug Crompton wrote: > Regardless of this argument I would say that most of us should be using > some kind of speed management to reduce power consumption. It seems > fruitless when you consider only your system but think of that multiplied > by millions of computers and it really does make a differnece. Megawatts > of power acutally! > > Doug > > On Sun, 17 Jun 2007, Antony P Joseph wrote: > > > Hi > > > > > Well, regardless of whether it's a hack or not, it does work and is a far > > > better approach than leaving the processor running at full speed even when it > > > isn't doing anything, which is why all modern CPUs do it. Seriously, did I > > > not make it clear that there _isn't_ a performance hit already? I don't wish > > > to be rude, but if you reply to someones message, do give them the bare > > > minimum courtesy by at least reading it first. > > Probably this is due to the different understanding of the word > > "performance" in computer industry. Different people interpret the word > > different ways such as latency, response time, even throughput and so > > on. This is what I used. > > > > http://www.cs.wisc.edu/condor/tutorials/alliance98/slides/tutorial/sld004.htm > > > > Performance suffers because there is a mechanism( an algorithm) involved > > in determining the ideal frequency of the CPU(that itself may not be > > guaranteed ideal frequency). If you plot a graph performance vs > > throughput for a fixed amount of power consumption for different > > governors, "powersave" will be highest throughput and smallest > > performance , "performance" will be highest performance and smallest > > throughput and "ondemand" may move along a curve between "performance" > > and "powersave" depending on the algorithm used and characteristics of > > the workload. > > > > With regards > > Antony > > > > ___________________________________________________________________________ > > Philadelphia Linux Users Group -- http://www.phillylinux.org > > Announcements - http://lists.phillylinux.org/mailman/listinfo/plug-announce > > General Discussion -- http://lists.phillylinux.org/mailman/listinfo/plug > > > > > "Those that sacrifice essential liberty to obtain a little temporary safety > deserve neither liberty nor safety." -- Ben Franklin (1759) > > **************************** > * Doug Crompton * > * Richboro, PA 18954 * > * 215-431-6307 * > * * > * doug@crompton.com * > * http://www.crompton.com * > **************************** > > > ___________________________________________________________________________ > Philadelphia Linux Users Group -- http://www.phillylinux.org > Announcements - http://lists.phillylinux.org/mailman/listinfo/plug-announce > General Discussion -- http://lists.phillylinux.org/mailman/listinfo/plug ___________________________________________________________________________ Philadelphia Linux Users Group -- http://www.phillylinux.org Announcements - http://lists.phillylinux.org/mailman/listinfo/plug-announce General Discussion -- http://lists.phillylinux.org/mailman/listinfo/plug
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