Description of problem: The FC6 kernel rpm, which should be a UP kernel, is actually an SMP kernel. I've seen on forums that this is possibly intentional for FC6, but it can cause problems. In my case there were APIC problems, causing the mouse to be extremely slow and jumpy. After lots of trial and error, a "noapic" boot option resolved the problem, but I've been told a UP kernel is going to be better for a UP system. At any rate, my specific symptom is documented here: http://forums.fedoraforum.org/showthread.php?p=686280#post686280 and included in an earlier bug here: https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=199877 My main hardware is: Athlon XP1700+ MSI KT266 Pro2 Version-Release number of selected component (if applicable): FC6 (multiple kernels), currently 2.6.18-1.2849.fc6 How reproducible: Always: [me@mybox ~]$ uname -a Linux xxx.xxx.xxx 2.6.18-1.2849.fc6 #1 SMP Fri Nov 10 12:45:28 EST 2006 i686 athlon i386 GNU/Linux [me@mybox ~]$ rpm -q kernel kernel-2.6.18-1.2849.fc6 Steps to Reproduce: 1. 2. 3. Actual results: SMP kernel Expected results: non-SMP kernel with "kernel-2.6.18-1.2846.fc6" Additional info:
(In reply to comment #0) > Description of problem: > The FC6 kernel rpm, which should be a UP kernel, is actually an SMP kernel. I've > seen on forums that this is possibly intentional for FC6 It is intentional, and we're not going to change it. However, I would suggest double-checking that you actually have an i686 kernel installed, and not an i586 one, as there was an installer bug that caused this to happen in some cases. I'm curious if this could be adding to your problem. See here for details: http://fedoraproject.org/wiki/Bugs/FC6Common Out of curiosity, are you by chance also charr? (asks the former Linux Networx employee... :)
Jared, right? Yes, as far as I know, I'm still that charr :) Regarding this issue, I didn't mean to sound so presumptuous that going SMP should be changed; I'm no expert. It just seemed to me (especially given my problem) that a UP kernel would be more appropriate. That said, it may be the arch issue. I don't have access to my box right now, but I'll check that out. Thanks
Heh, cool. I can't recall if we ever met... As for the SMP vs. UP issue... Code recently went into the upstream kernel (and thus the Fedora kernel) that significantly reduced the overhead of running an SMP-enabled kernel on UP x86 hardware to the point where the gains of an UP-only kernel were negligible. That being the case, we only ship the SMP-enabled one now. That'll be the case in RHEL5 too. Definitely curious if this is a side-effect of the wrong arch kernel running, or if we've got something else to investigate...
Ok, here is my output. It looks to be real i686 kernel installed. Do you need anything else? The other associated bug asked me for a dmesg with and without apic, so I was going to grab that. [root@chico ~]# uname -a Linux chico.harr.org 2.6.18-1.2849.fc6 #1 SMP Fri Nov 10 12:45:28 EST 2006 i686 athlon i386 GNU/Linux [root@chico ~]# rpm -qa --queryformat "%{NAME}-%{VERSION}-%{RELEASE}.%{ARCH}\n"|grep kernel|sort kernel-2.6.18-1.2798.fc6.i686 kernel-2.6.18-1.2849.fc6.i686 kernel-devel-2.6.18-1.2798.fc6.i686 kernel-devel-2.6.18-1.2849.fc6.i686
I think we can close this particular bug as a dupe of bug 199877, since it looks like they're actually tracking the same problem and you've got the right kernel installed. I don't have a clue what's up at the moment, but maybe Dan has some idea of where to go from the info you provided in the other bug... *** This bug has been marked as a duplicate of 199877 ***