>>> Alexander Nyberg <[email protected]> 12.05.05 12:00:08 >>>
>tor 2005-05-12 klockan 10:27 +0200 skrev Jan Beulich:
>> Get the x86-64 watchdog tick calculation into a state where it can also
>> be used with nmi_hz other than 1Hz. Also do not turn on the watchdog by
>> default (as is already done on i386).
>
>Why shouldn't the watchdog be turned on by default? It's an extremely
>useful debugging aid and it's not like it fires NMIs often (the nmi_hz
>is far from reality).
For the so-called LAPIC one (based on performance monitor counters) that's true; that is for AMD boxes. For Intel boxes, which get defaulted to the IOAPIC version, it runs at HZ, and this is in my opinion significant overhead. If the Intel support for LAPIC watchdog was completed, and that used as the default, I would certainly agree to keeping it on by default.
Jan
-
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]
