Yep, found out earlier that our VMs do that. :) Upon further reflection, I wouldn't mind storing that 30k value. However, the other snag is that the command in the measurements promise cannot have any shell metacharacters (I believe it is fork/exec'ed directly rather than being passed to a subshell), so I can't use a pipe. Some systems have a new enough dmidecode that has a -s flag, but not all of them have processor-frequency:
# dmidecode -s processor-frequency 2600 MHz 2600 MHz Unknown Unknown Unknown Unknown Unknown Unknown # I'm considering defining classes based on availability of the proper dmidecode command and then using the class to select the proper measurements promise, but for /proc/cpuinfo I don't think I can determine from within Cfengine if any particular system will throttle the CPU so I may stop using that. However, to use /proc/cpuinfo, I could possibly change how I compare the current CPU speed with the one in the database for a given system, doing an ordering comparison rather than a naïve strcmp(), thus converging on storing only the maximum value seen. :) Justin -----Original Message----- From: Tim Cutts [mailto:t...@sanger.ac.uk] Sent: Wednesday, September 01, 2010 3:55 PM To: Justin Lloyd Cc: Help-cfengine@cfengine.org Subject: Re: Linux CPU speed On 1 Sep 2010, at 20:07, Justin Lloyd wrote: > Hi Tim, > > > > Someone else mentioned that dmidecode has the output, but a quick test > seems to have found it unreliable since many of my systems were > reporting 30000 MHz. I wish! J Let me guess - those CPUs are VMware virtual machines. I'd noticed that figure for the virtualised CPUs on our vSphere machines. My bet is it reports that if you specify the CPU speed limit in the VM's resources as "unlimited". If you actually set the maximum CPU speed to some real number in vmware, is that then reflected in the dmidecode output? Just wondering... Presumably asset numbers in your cfengine setup are somewhat irrelevant if the machine you're configuring is virtual... Tim -- The Wellcome Trust Sanger Institute is operated by Genome Research Limited, a charity registered in England with number 1021457 and a company registered in England with number 2742969, whose registered office is 215 Euston Road, London, NW1 2BE. This electronic communication and any attachments may contain confidential and proprietary information of DigitalGlobe, Inc. If you are not the intended recipient, or an agent or employee responsible for delivering this communication to the intended recipient, or if you have received this communication in error, please do not print, copy, retransmit, disseminate or otherwise use the information. Please indicate to the sender that you have received this communication in error, and delete the copy you received. DigitalGlobe reserves the right to monitor any electronic communication sent or received by its employees, agents or representatives. _______________________________________________ Help-cfengine mailing list Help-cfengine@cfengine.org https://cfengine.org/mailman/listinfo/help-cfengine
