Hello.
I purchased laptop with C2D (due to TSC register problem with PM on AMD) after
many happy years with AMD processor on my laptop, desktops and servers. I
install nv_93 (ZFSROOT) and LU to nv_94 and lastly to nv_95. My system boots
and works very slowly.
There is my results "boot to text login prompt" (same config, chosen at
GRUB+/etc/system):
A) 64bit nv_95 (with/without disabled mwait+halt): 4:20 minutes
- I saw 200-300% more context switches and syscalls in "vmstat" than in 32bit
mode
with the same running daemons but "dtrace -n 'syscall:::entry {
@[execname]=count(); }'" do not see/count it.
B) 32bit nv_95: 2:20 min
- System works very strange. If I press&hold key - autorepeated keys
stop&go every 3-4 seconds
but if I was moving with mouse (eg. USB interrupts) at the same time
autorepeat works fine.
C) 32bit nv_95 (with disabled mwait+halt): 1:45 min !!!!!
It seems to me that there are problems with "Penryn" C2D C-state changes
(mwait) and something wrong in 64bit code (EM64T).
Has someone similar observations ?
Is there any movement in processor low level code ?
Thanks, M.C>
PS:
- mwait+halt disabled in /etc/system: set idle_cpu_prefer_mwait=0 set
idle_cpu_use_hlt=0
- I tried on/off ACPI (without influence to performance).
- There is also many error in V1sn ACPI that I must correct (parallel port and
undock).
- PM (frequency scaling) P-states works fine (powertop shows it).
- WinXP works fine.
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