On Sun, Jan 10, 2016 at 11:58:41AM -0600, Bruce Dubbs wrote: > Ken Moffat wrote: > >On Sun, Jan 10, 2016 at 04:12:34PM +0000, Ken Moffat wrote: > >> > >>One of my machines is somewhat prone to "having a bad day", when it > >>is compiling, and I think I very occasionally (much less than once a > >>year) get a compiled program which segfaults. > > > >Now that I've put on my pedant's hat, what I meant was that I very > >occasionally get a normally-good program which segfaults. For other > >programs such as firefox, occasional segfaults are par for the > >course. > > That really points to HW. I've been building a new system for a few days > now and noticing a lot of details. I have installed lm_sensors and display > info via a program not in BLFS called gkrellm. >
Yeah, I was referring to my phonon x4 : I know of at least one other person with a similar processor who limits himself to -j3 instead of -j4 because of this. So yes, something in the hardware seems to be marginal, my guess is the mobo or bios, I've had a couple of occasions where it decided to shut down and revert to bios defaults (I didn't have anything "dangerous" enabled, and only really noticed because the splash screen told me so). > When I built libreoffice, I told it to use all 4 processors on the i5. It > chugged along for almost two hours. Watching the temperatures on the cores, > they went from a normal 24C to about 50C when they went full out. > I'm not in front of my desktops at the moment, but I do use the meaningful values provided by lm_sensors [ generally, very few of the values on my machines look reliable ] and I don't think I've ever seen the CPU as low as 24°C when idle. > That's not a problem on my system as the warning threshold is 85C, but it > shows what can happen when the processor works hard. On marginal HW, this > can be a problem. > > The same types of problems happen with flaky memory. One thing to try, as > was mentioned earlier on one of the support channels, is to remove and > reinsert all the memory SIMMs to ensure the connections are solid. > > -- Bruce > For memory, I have preferred to use memtest86+ : if it lasts overnight, things are probably ok. ĸen -- This email was written using 100% recycled letters. -- http://lists.linuxfromscratch.org/listinfo/lfs-support FAQ: http://www.linuxfromscratch.org/blfs/faq.html Unsubscribe: See the above information page Do not top post on this list. A: Because it messes up the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail? http://en.wikipedia.org/wiki/Posting_style
