On 04/01/2015 11:14 AM, Linus Torvalds wrote: > On Wed, Apr 1, 2015 at 9:10 AM, Chris J Arges > <[email protected]> wrote: >> >> Even with irqbalance removed from the L0/L1 machines the hang still occurs. >> >> This results in no 'apic: vector* or 'ack_APIC*' messages being displayed. > > Ok. So the ack_APIC debug patch found *something*, but it seems to be > unrelated to the hang. > > Dang. Oh well. Back to square one. > > Linus >
With my L0 testing I've normally used a 3.13 series kernel since it tends to reproduce the hang very quickly with the testcase. Note we have reproduced an identical hang with newer kernels (3.19+patches) using the openstack tempest on openstack reproducer, but the timing can vary between hours and days. Installing a v4.0-rc6+patch kernel on L0 makes the problem very slow to reproduce, so I am running these tests now which may take day(s). It is worthwhile to do a 'bisect' to see where on average it takes longer to reproduce? Perhaps it will point to a relevant change, or it may be completely useless. --chris -- 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/
