Not on Fedora's kernel sources, but with 2.6.11ac7. I based my config on
/boot/config-2.6.11-1.14_FC3 and deat with the additional options with
"make oldconfig". Then I browsed the configuration with "make
menuconfig", just for fun.
I saw kernel preemption was turned off, so I turned on. Afterwards, I
notice the system is noticeably faster. Bootup is faster. Shutdown is
faster. The Red Hat manu on GNOME pops up WAY faster. OpenOffice.org
loading is faster. I suspect other things are faster too, but I'd have
to time them.
So my question is: why isn't preemption enabled in the FC3 packaged
kernel? Does it conflict with something I haven't encountered yet? maybe
some esoteric hardware combination? My hardware data is below.
Another thing: what crucial patch, if any, am I missing by using
2.6.11ac7 instead of the FC3 packaged kernel?
[jcastro@ws06 ~]$ cat /proc/cpuinfo
processor : 0
vendor_id : AuthenticAMD
cpu family : 6
model : 8
model name : AMD Athlon(tm) XP 2400+
stepping : 1
cpu MHz : 1991.906
cache size : 256 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov pat pse36 mmx fxsr sse pni syscall mmxext 3dnowext 3dnow
bogomips : 3948.54
[jcastro@ws06 ~]$ /sbin/lspci
00:00.0 Host bridge: VIA Technologies, Inc. VT8378 [KM400/A] Chipset
Host Bridge00:01.0 PCI bridge: VIA Technologies, Inc. VT8237 PCI Bridge
00:10.0 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1
Controller (rev 80)
00:10.1 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1
Controller (rev 80)
00:10.2 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1
Controller (rev 80)
00:10.3 USB Controller: VIA Technologies, Inc. USB 2.0 (rev 82)
00:11.0 ISA bridge: VIA Technologies, Inc. VT8235 ISA Bridge
00:11.1 IDE interface: VIA Technologies, Inc.
VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 06)
00:11.5 Multimedia audio controller: VIA Technologies, Inc.
VT8233/A/8235/8237 AC97 Audio Controller (rev 50)
00:12.0 Ethernet controller: VIA Technologies, Inc. VT6102 [Rhine-II]
(rev 74)
01:00.0 VGA compatible controller: VIA Technologies, Inc. VT8378 [S3
UniChrome] Integrated Video (rev 01)
