On Tue, Feb 05, 2013 at 08:01:55PM -0600, Bruce Dubbs wrote: > > May I suggest that you 'make defconfig' for the kernel just for testing > and see if the results are significantly different. > Well, since I'm still up (rebuilt the 32-bit kernel to get the tty's aligned to the same place as the xorg screen : turning off CONFIG_FB_RADEON while keeping the RADEON_KMS setting sorted that part), I took a look at this :
1. It adds all sorts of things I describe as bloat (SMP, NUMA, tracing options). 2. It changes HZ from 250 to 1000 : my memory says that this box doesn't have enough horsepower to call the scheduler so frequently. 3. It changes the cpufreq driver ot ACPI_CPUFREQ_B instead of POWERNOW_K8 : adding ACPI_CPUFREQ in my 32-bit build broke my ondemand cpufreq driver - the sysfs files disappeared and the processor was stuck at full speed (although, to be fare, it recorded that as 1999.991 MHz instead of 2000 MHz). 4. It turns off CONFIG_SATA_VIA (so, no disk), COINFIG_R8169 (so, no network), and CONFIG_DRM_RADEON (so, no KMS). At that point I gave up comparing, for all I know it will also deselect nfs. Certainly I saw that it changes the NETFILTER options. The items in '4' would be a killer. I'm not adverse to trying a different config for my next 64-bit build on this machine, but using defconfig looks like a non-starter. If there is something specific that you think might be useful, please mention it. But trying to use what used to be Mr Torvald's .config doesn't seem a good idea if I have very different hardware from him. ĸen -- das eine Mal als Tragödie, das andere Mal als Farce -- http://linuxfromscratch.org/mailman/listinfo/blfs-support FAQ: http://www.linuxfromscratch.org/blfs/faq.html Unsubscribe: See the above information page
