Linux - SoftwareThis forum is for Software issues.
Having a problem installing a new program? Want to know which application is best for the job? Post your question in this forum.
Welcome to LinuxQuestions.org, a friendly and active Linux Community.
You are currently viewing LQ as a guest. By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features. Registration is quick, simple and absolutely free. Join our community today!
Note that registered members see fewer ads, and ContentLink is completely disabled once you log in.
If you have any problems with the registration process or your account login, please contact us. If you need to reset your password, click here.
Having a problem logging in? Please visit this page to clear all LQ-related cookies.
Introduction to Linux - A Hands on Guide
This guide was created as an overview of the Linux Operating System, geared toward new users as an exploration tour and getting started guide, with exercises at the end of each chapter.
For more advanced trainees it can be a desktop reference, and a collection of the base knowledge needed to proceed with system and network administration. This book contains many real life examples derived from the author's experience as a Linux system and network administrator, trainer and consultant. They hope these examples will help you to get a better understanding of the Linux system and that you feel encouraged to try out things on your own.
Click Here to receive this Complete Guide absolutely free.
I'm running into a situation where my system's CPU utilisation jumps from near-zero (1-5% during idle runtime) to 40-60% (I've seen as high as 63%) while fsck is running on my second HD. The odd thing (to me) is that the CPU utilisation as seen by top and system monitor as being tagged to the Xorg process. I'm invoking fsck using 'sudo fsck.ext3 -cf /dev/sdb1', and once it hits the 'Checking for bad blocks (read-only test)' step is where it spikes.
The system is equipped with a P4 3.0GHz Hyper-threaded CPU, a little behind the times for sure. Running with Ubuntu 9.10 in GNOME. I've also caused the same spike in CPU usage by opening an SSH session from my mobile phone, invoking the same command as above, with the same results (further puzzling me, since I can't figure out why Xorg would get involved on a command issued by an SSH user).
Is this near the norm for this sort of command, or is something going a bit awry? I hesitate on letting this rig run with such high CPU usage, seeing as I have trouble getting memtest86 to complete (due to overheat) without starting it from a cold boot; I've seen that a bad block check like this can get rather lengthy.
I have trouble getting memtest86 to complete (due to overheat) without starting it from a cold boot
Sounds like you have a general overheating problem; that's not normal. I'm wondering if during the fsck operation you are generating too much heat and the cpu is throttling down due to excessive heat giving you, in effect, a slower cpu and greater cpu utilization as a result. What kind of temperatures are you getting in your bios setup?
First thing I would try would be opening the case and cleaning out the dust bunnies. Especially, check out your cpu heatsink and fan and blow out any dust you find there.
I blew out the dust, the heat sink was caked about 3/4 inch in gunk; the previous user (my fiance) wasn't that good about cleaning, and until I took her system over it just built up; half a can of compressed air later, it's clean, and that took care of those issues.
It seems that the problem with the fsck was the drive itself; I took a look over some of the logs (if I remember correctly, dmesg had the details, but I've slept since then) and quite a few blocks were getting tagged as bad, which seems to have been my root cause on fsck's runtime; my other system's 2nd HD, swapped into this system, had the same usage but much quicker runtime on the same check.