All,
>From personal experience I have had an hardware issue on the Mac book Pro >where I had to replace the mother board because the CPU of a kernel process >was always going to over 100% and the fan was trying to cause the laptop to >fly. So it is very important to check the processes as Nick mention. If it >isn't a process you know about, then do a google search with process name and >high CPU. See if the issue is hardware or not. Majority of the time the issue >isn't hardware, rather the CPU not being able to process all the requests from >the program quick enough. This could be software defect or just a program >being very busy. Sean the tempature and other hardware functionality. From my research the issue turned to be an hardware fault. On 05/07/2012, at 4:33 AM, Nicolai Svendsen wrote: > Hi Lynne, > > OS X can reboot about 15 seconds later if you set the option in the Energy > Saver preferences, however this feature seems to be the default under 10.8, > Mountain Lion, and cannot be changed. Kernel panics may cause the fan to > whirl a lot, but it's not going to matter because when your Mac throws a > kernel panic, you can't use it. Under Linux this works slightly differently > because it can also throw what is called a "kernel oops," which means the > kernel runs after killing the offending processes, however this can lead to > further instabilities which may eventually cause a full kernel panic, so this > is where the confusion may arise. > > OS X will display a multilingual error message telling you to reboot until > your computer restarts, or it will reboot on its own depending on your > preference. > > Anyway, I digress. Bottom line is that the option to automatically reboot > under Lion seems to be optional, and not set by default. In this case, you > may experience high fan activity but in either scenario, Mac OS X is unusable > because of the error encountered. > > Regards, > Nicolai > On Jul 4, 2012, at 7:33 PM, "Mrs. Lynnette Annabel Smith" > <[email protected]> wrote: > >> Hello Nic >> >> I will top post here; so as to make it easy for you to quickly read my reply. >> >> I don't claim to be anywhere close to your level of expertise when it comes >> to the oS. But I have read that a "Kernel Panic" can cause high fan >> activity. I agree with your description of a Kernel Panic in comparison to >> the dreaded Blue Screen that Windows users will know so well. >> >> Perhaps my description was a little inaccurate and, if so, I apologise most >> humbly for that. ;-) >> >> Lynne >> >> >> On 4 Jul 2012, at 13:37, Nicolai Svendsen <[email protected]> wrote: >> >> Hi Lynne, >> >> Depending on what application he used to play music (we'll assume iTunes,) >> some processes in OS X sometimes run very resource-hungry tasks. One >> resource to watch out for in particular is mdworker. What this stands for is >> Metadata Server worker and it ensures that your files are Indexed using >> Spotlight, and is the core technology behind the search engine. It generates >> its index using metadata making it possible to find files instantaneously >> using Spotlight. It's very much known to take up a lot of CPU, so this is >> probably what happened. It tends to really start working when you, for >> instance, plug in an external hard drive. Keep in mind that it tries to >> index all of the new files that it discovers, so depending on the new files >> found it may take longer than you expect. Also depending on the workload it >> will work harder, but the high CPU usage is totally normal. Other processes >> may increase your CPU usage, like Voiceover, but if VoiceOver does this >> often you need to do some t > ro >> ubleshooting. VoiceOVer is designed to hardly eat up any resources. You can >> review the CPU usage of your processes through >> /Applications/Utilities/Activity Monitor.app or by using Terminal commands. >> >> A kernel panic is something entirely different and actually causes your Mac >> to freeze, and even third party programs can cause this, although kernel >> panics should be extremely rare. it is an internal fatal error for which >> your operating system cannot recover, and is often related to hardware >> problems though some software particularly in the operating system itself >> may trigger the behaviour. It's a safety mechanism which aims to prevent >> data corruption and the risk of data breaches, and attempts to facilitate a >> diagnosis of the error. For those familiar with Windows, this is what most >> users even consumers call the "blue screen," or "Bug check." >> >> Regards, >> Nicolai >> On Jul 4, 2012, at 1:22 PM, Mrs. Lynnette Annabel Smith >> <[email protected]> wrote: >> >>> Hello Josh and Sarah >>> >>> There are occasions where you can run into what I believe is a "Panic" at a >>> very low level. These "Panics" or "Kernel Panics" can cause symptoms such >>> as the fan speed increasing or hard drive access becoming sluggish. >>> >>> In a lot of cases, you can help your Mac recover from these "Panics" by >>> simply shutting it down and then restarting. I'm lead to believe that some >>> or all of these "Panics" are logged and can be sent to Apple as a report. >>> Of course, somebody may know better than I; in fact they probably do. But >>> having read a lot of stuff on Apple's technical pages I think this is the >>> kind of situation you're running into. >>> >>> Lynne >>> >>> On 4 Jul 2012, at 02:18, josh gregory <[email protected]> wrote: >>> >>> Is it anything to seriously worry about? Like will anything happen to >>> my mac from it? >>> >>> <--- Mac Access At Mac Access Dot Net ---> >>> >>> To reply to this post, please address your message to >>> [email protected] >>> >>> You can find an archive of all messages posted to the Mac-Access forum >>> at either the list's own dedicated web archive: >>> <http://mail.tft-bbs.co.uk/pipermail/mac-access/index.html> >>> or at the public Mail Archive: >>> <http://www.mail-archive.com/[email protected]/>. >>> Subscribe to the list's RSS feed from: >>> <http://www.mail-archive.com/[email protected]/maillist.xml> >>> >>> The Mac-Access mailing list is guaranteed malware, spyware, Trojan, virus >>> and worm-free! >>> >>> Please remember to update your membership options periodically by visiting >>> the list website at: >>> <http://mail.tft-bbs.co.uk/mailman/listinfo/mac-access/options/> >> >> <--- Mac Access At Mac Access Dot Net ---> >> >> To reply to this post, please address your message to >> [email protected] >> >> You can find an archive of all messages posted to the Mac-Access forum at >> either the list's own dedicated web archive: >> <http://mail.tft-bbs.co.uk/pipermail/mac-access/index.html> >> or at the public Mail Archive: >> <http://www.mail-archive.com/[email protected]/>. >> Subscribe to the list's RSS feed from: >> <http://www.mail-archive.com/[email protected]/maillist.xml> >> >> The Mac-Access mailing list is guaranteed malware, spyware, Trojan, virus >> and worm-free! >> >> Please remember to update your membership options periodically by visiting >> the list website at: >> <http://mail.tft-bbs.co.uk/mailman/listinfo/mac-access/options/> >> >> <--- Mac Access At Mac Access Dot Net ---> >> >> To reply to this post, please address your message to >> [email protected] >> >> You can find an archive of all messages posted to the Mac-Access forum at >> either the list's own dedicated web archive: >> <http://mail.tft-bbs.co.uk/pipermail/mac-access/index.html> >> or at the public Mail Archive: >> <http://www.mail-archive.com/[email protected]/>. >> Subscribe to the list's RSS feed from: >> <http://www.mail-archive.com/[email protected]/maillist.xml> >> >> The Mac-Access mailing list is guaranteed malware, spyware, Trojan, virus >> and worm-free! >> >> Please remember to update your membership options periodically by visiting >> the list website at: >> <http://mail.tft-bbs.co.uk/mailman/listinfo/mac-access/options/> > > <--- Mac Access At Mac Access Dot Net ---> > > To reply to this post, please address your message to > [email protected] > > You can find an archive of all messages posted to the Mac-Access forum at > either the list's own dedicated web archive: > <http://mail.tft-bbs.co.uk/pipermail/mac-access/index.html> > or at the public Mail Archive: > <http://www.mail-archive.com/[email protected]/>. > Subscribe to the list's RSS feed from: > <http://www.mail-archive.com/[email protected]/maillist.xml> > > The Mac-Access mailing list is guaranteed malware, spyware, Trojan, virus and > worm-free! > > Please remember to update your membership options periodically by visiting > the list website at: > <http://mail.tft-bbs.co.uk/mailman/listinfo/mac-access/options/> <--- Mac Access At Mac Access Dot Net ---> To reply to this post, please address your message to [email protected] You can find an archive of all messages posted to the Mac-Access forum at either the list's own dedicated web archive: <http://mail.tft-bbs.co.uk/pipermail/mac-access/index.html> or at the public Mail Archive: <http://www.mail-archive.com/[email protected]/>. 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