Mark Haywood wrote: > Dr. David Kirkby wrote: > >>> >>> >>>> Also useful would be a message when the speed is >>>> >>>> >>> reduced. I get messages like: >>> >>> >>>> cpudrv: [ID 495817 kern.info] NOTICE: >>>> >>>> >>> cpudrv_pm_set_topspeed: instance 1: has new max power >>> of 200 >>> 0 MHz >>> >>> >>>> but dont see any if the speed is reduce - I've no >>>> >>>> >>> idea if it does reduce. >>> >>> >>> If you get many of those message, I would classify >>> that as a bug >>> >>> (in fact, any message that the CPU power frequency >>> has changed is a bug, >>> IMHO, as it might cause your disks to spin up when >>> the log message hits >>> the disk) >>> >>> kstat shows you the current frequencies. >>> >>> Casper >>> >>> _______________________________________________ >>> opensolaris-discuss mailing list >>> opensolaris-discuss@opensolaris.org >>> >>> >> I've just checked /var/adm/messages on my laptop and see it has been booted >> 38 times. The cpudrv_pm_set_topspeed message has appeared 180 times - 90 >> with instance of 0 and 90 with an instance of 1. >> >> bash-3.00$ grep 'NOTICE: cpudrv_pm_set_topspeed: instance 1: has new max >> power of 2000 MHz' /var/adm/messages | wc -l >> 90 >> bash-3.00$ grep 'NOTICE: cpudrv_pm_set_topspeed: instance 0: has new max >> power of 2000 MHz' /var/adm/messages | wc -l >> 90 >> bash-3.00$ grep 'SunOS Release 5.11 Version snv_70b 64-bit' >> /var/adm/messages | wc -l >> 38 >> >> >> BTW, It seems that whoever wrote this bit of code needs to learn about SI >> units, since I thought power was measured in Watts, not MHz. I thought MHz >> was a unit of frequency and not power. >> >> > I wrote the bit of code and yes, I was embarrassed when I read it over > as part of this thread. I was wondering if anyone was going to mention > the absurdity of its content. > > As for the usefulness of the message, I think the information (the fact > that the max frequency is changing) is useful. Might need to be another > kstat rather than hidden away in the system log. > and/or a DTrace probe ... > Mark > > >> It reminds me once when I worked in IT for about 6 months. My manager wanted >> me to tell him the power consumption of some kit, as we were getting quotes >> for air conditioning. So I added it up and emailed him the result in Watts. >> I then got a message back that he did not want it in Watts, but did not >> specify a unit. So I converted to kilo Joules per fortnight and email it to >> him in that. I then got the reply that "Watts would do". >> >> > > _______________________________________________ > opensolaris-discuss mailing list > opensolaris-discuss@opensolaris.org >
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