john stultz a écrit :
On Thu, 2005-11-03 at 22:12 +0100, Jean-Christian de Rivaz wrote:
A have tested 7 differents vanilla kernel on the same suspect hardware:
2.6.8 : ntpd working : drift from -77ppm to -144ppm
2.6.9 : ntpd working : drift from -99ppm to -231ppm
2.6.10 : ntpd failed : drift from -37825ppm to -29912ppm
2.6.12 : ntpd failed : drift from -43429ppm to -45251ppm
Ok, that makes it pretty clear we have a regression w/ 2.6.10. I really
appreciate your helping narrow down this issue. If you have the time,
could you test the three 2.6.10-rcX patches?
You can find them here:
ftp://ftp.kernel.org/pub/linux/kernel/v2.6/testing/
And they apply independently (not cumulatively) ontop of 2.6.9
I will try, but compiling the kernels take time even with 3 machines
(one per kernel version)...
I compared the dmesg log of the different kernel, but since I don't know
what I should find it's a little difficult. There is many differences
between each kernels. Despit that, I noticed this difference between the
kernel 2.6.9 (ntps working) and the kernel 2.6.10 (ntpd failed):
--- linux-2.6.9.txt 2005-11-03 22:49:29.000000000 +0100
+++ linux-2.6.10.txt 2005-11-03 22:48:41.000000000 +0100
[...snip...]
@@ -67,16 +68,12 @@
Enabling unmasked SIMD FPU exception support... done.
Checking 'hlt' instruction... OK.
ENABLING IO-APIC IRQs
- vector=0x31 pin1=2 pin2=-1
- 8254 timer not connected to IO-APIC
- ...trying to set up timer (IRQ0) through the 8259A ... failed.
- ...trying to set up timer as Virtual Wire IRQ... failed.
- ...trying to set up timer as ExtINT IRQ... works.
+ vector=0x31 pin1=0 pin2=-1
Registered protocol family 16
PCI BIOS revision 2.10 entry at 0xfbbb0, last bus=3
Using configuration type 1
[..snip...]
Maybe a way to go ?
--
Jean-Christian de Rivaz
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