Johannes Stezenbach wrote:
Brice Goglin wrote:
Johannes Stezenbach a écrit :
Johannes Stezenbach wrote:
Hype-threading stopped working for me (probably due to
me not enabling ACPI). dmesg output and .config attached.
-rc5 worked fine. The board is an Asus P4P800-Deluxe.
dmesg: WARNING: 1 siblings found for CPU0, should be 2
Indeed SMT works fine if I enable ACPI.
Is SMT without ACPI not supported?
You can pass acpi=ht into the kernel command line to disable
ACPI except the minimum required to get HT support.
That's nice, but I was thinking along the lines of:
diff -ur linux-2.6.12-rc6.orig/arch/i386/Kconfig linux-2.6.12-rc6/arch/i386/Kconfig
--- linux-2.6.12-rc6.orig/arch/i386/Kconfig 2005-06-06 23:16:27.000000000 +0200
+++ linux-2.6.12-rc6/arch/i386/Kconfig 2005-06-08 13:35:08.000000000 +0200
@@ -503,7 +503,7 @@
config SCHED_SMT
bool "SMT (Hyperthreading) scheduler support"
- depends on SMP
+ depends on SMP && ACPI
default off
help
SMT scheduler support improves the CPU scheduler's decision making
Comments? Is this intended?
I would think that you can't do HT without ACPI, so there's no point in
building in HT scheduling unless you can have HT.
Is that what you were asking? I was hoping someone else would comment.
Scheduling is getting harder and harder to get right... I have this
thought of a Beowolf cluster of NUMA machines, with each node being HT
multicore SMP. By "right" I meant "optimal," I'm sure that setup would
do something reasonable with current scheduling.
--
-bill davidsen ([email protected])
"The secret to procrastination is to put things off until the
last possible moment - but no longer" -me
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]