* Dmitry Fleytman (dmi...@daynix.com) wrote: > Hello Dave, Hi Dmitry, Thanks for the reply.
> We are trying to reproduce this issue on our systems but with no luck so far… Note our QE hit this with both a Win8.1 and a win2012r2 guest - although the 2012r2 is reported to have recoverd after a few minutes. 2016 apparently works OK. > From what you describe it looks like some bit in ICR is not being cleared by > the driver. > This usually means that this bit should never be set in that specific > interrupt mode. > > Could you please check which bit is not cleared and who sets it? The full set of e1000e_irq_pending_interrupts after migration is: 23004@1494519346.673905:e1000e_irq_pending_interrupts ICR PENDING: 0x100000 (ICR: 0x80100082, IMS: 0x1f00004) 23004@1494519346.674787:e1000e_irq_pending_interrupts ICR PENDING: 0x0 (ICR: 0x80100082, IMS: 0x1e00004) 23004@1494519346.674946:e1000e_irq_pending_interrupts ICR PENDING: 0x0 (ICR: 0x80100082, IMS: 0x1e00004) 23004@1494519346.675119:e1000e_irq_pending_interrupts ICR PENDING: 0x200000 (ICR: 0x80300082, IMS: 0x1e00004) 23004@1494519346.675302:e1000e_irq_pending_interrupts ICR PENDING: 0x0 (ICR: 0x80100082, IMS: 0x1c00004) <repeated lots> 23004@1494519346.716279:e1000e_irq_pending_interrupts ICR PENDING: 0x0 (ICR: 0x80300082, IMS: 0x1c00004) 23004@1494519346.716380:e1000e_irq_pending_interrupts ICR PENDING: 0x1000000 (ICR: 0x813000c2, IMS: 0x1c00004) 23004@1494519346.717040:e1000e_irq_pending_interrupts ICR PENDING: 0x1000000 (ICR: 0x813000c2, IMS: 0x1400004) 23004@1494519346.717276:e1000e_irq_pending_interrupts ICR PENDING: 0x1000000 (ICR: 0x813000c2, IMS: 0x1000004) 23004@1494519346.717443:e1000e_irq_pending_interrupts ICR PENDING: 0x0 (ICR: 0x813000c2, IMS: 0x4) 23004@1494519346.717567:e1000e_irq_pending_interrupts ICR PENDING: 0x0 (ICR: 0x813000c2, IMS: 0x4) 23004@1494519346.717782:e1000e_irq_pending_interrupts ICR PENDING: 0x0 (ICR: 0x813000c2, IMS: 0x4) 23004@1494519346.717918:e1000e_irq_pending_interrupts ICR PENDING: 0x0 (ICR: 0x813000c2, IMS: 0x4) 23004@1494519346.718319:e1000e_irq_pending_interrupts ICR PENDING: 0x0 (ICR: 0x813000c2, IMS: 0x4) 23004@1494519346.718523:e1000e_irq_pending_interrupts ICR PENDING: 0x200000 (ICR: 0x813000c2, IMS: 0xa00004) 23004@1494519346.718684:e1000e_irq_pending_interrupts ICR PENDING: 0x0 (ICR: 0x811000c2, IMS: 0x4) 23004@1494519346.718890:e1000e_irq_pending_interrupts ICR PENDING: 0x0 (ICR: 0x811000c2, IMS: 0x4) 23004@1494519346.719034:e1000e_irq_pending_interrupts ICR PENDING: 0x0 (ICR: 0x811000c2, IMS: 0xa00004) 23004@1494519346.719130:e1000e_irq_pending_interrupts ICR PENDING: 0x0 (ICR: 0x811000c2, IMS: 0xa00004) <repeats> 23004@1494519346.722699:e1000e_irq_pending_interrupts ICR PENDING: 0x0 (ICR: 0x811000c2, IMS: 0xa00004) 23004@1494519346.722868:e1000e_irq_pending_interrupts ICR PENDING: 0x200000 (ICR: 0x813000c2, IMS: 0xa00004) 23004@1494519346.723068:e1000e_irq_pending_interrupts ICR PENDING: 0x0 (ICR: 0x811000c2, IMS: 0x800004) <repeats> 23004@1494519346.731198:e1000e_irq_pending_interrupts ICR PENDING: 0x0 (ICR: 0x813000c2, IMS: 0x800004) 23004@1494519346.731422:e1000e_irq_pending_interrupts ICR PENDING: 0x0 (ICR: 0x813000c2, IMS: 0x4) 23004@1494519346.731930:e1000e_irq_pending_interrupts ICR PENDING: 0x200000 (ICR: 0x813000c2, IMS: 0xa00004) 23004@1494519346.732082:e1000e_irq_pending_interrupts ICR PENDING: 0x0 (ICR: 0x811000c2, IMS: 0x4) 23004@1494519346.732274:e1000e_irq_pending_interrupts ICR PENDING: 0x0 (ICR: 0x811000c2, IMS: 0x4) 23004@1494519346.732404:e1000e_irq_pending_interrupts ICR PENDING: 0x0 (ICR: 0x811000c2, IMS: 0xa00004) 23004@1494519346.732504:e1000e_irq_pending_interrupts ICR PENDING: 0x0 (ICR: 0x811000c2, IMS: 0xa00004) 23004@1494519346.784150:e1000e_irq_pending_interrupts ICR PENDING: 0x0 (ICR: 0x815000c2, IMS: 0xa00004) 23004@1494519346.786506:e1000e_irq_pending_interrupts ICR PENDING: 0x0 (ICR: 0x815000c2, IMS: 0xa00004) 23004@1494519346.786534:e1000e_irq_pending_interrupts ICR PENDING: 0x0 (ICR: 0x815000c2, IMS: 0xa00004) 23004@1494519346.789644:e1000e_irq_pending_interrupts ICR PENDING: 0x1000000 (ICR: 0x815000c2, IMS: 0x1a00004) 23004@1494519346.789864:e1000e_irq_pending_interrupts ICR PENDING: 0x0 (ICR: 0x815000c2, IMS: 0xa00004) 23004@1494519346.789992:e1000e_irq_pending_interrupts ICR PENDING: 0x0 (ICR: 0x815000c2, IMS: 0xa00004) 23004@1494519346.790413:e1000e_irq_pending_interrupts ICR PENDING: 0x0 (ICR: 0x815000c2, IMS: 0xa00004) 23004@1494519346.790539:e1000e_irq_pending_interrupts ICR PENDING: 0x0 (ICR: 0x815000c2, IMS: 0xa00004) 23004@1494519346.792593:e1000e_irq_pending_interrupts ICR PENDING: 0x0 (ICR: 0x815000c2, IMS: 0xa00004) 23004@1494519346.792620:e1000e_irq_pending_interrupts ICR PENDING: 0x0 (ICR: 0x815000c2, IMS: 0xa00004) 23004@1494519346.795943:e1000e_irq_pending_interrupts ICR PENDING: 0x1000000 (ICR: 0x815000c2, IMS: 0x1a00004) and then I think we get stuck in this cycle of this one always being the one that fires repeatedly. I think that's the 'other' firing, I think because of the receive-overrun. One thing I've not figured out is why the receive overrun happens - is that because we really have a very heavy packet rate or is it because something has stopped receiving them. The network I'm testing on does have a fair amount of broadcast traffic on. Dave > Regards, > Dmitry > > > On 11 May 2017, at 15:36 PM, Dr. David Alan Gilbert <dgilb...@redhat.com> > > wrote: > > > > Hi Dmitry, > > Have you seen any problems with e1000e migration under windows? > > I've got a repeatable case where after migration with e1000e windows > > hangs/almost hangs. > > I'm seeing the e1000e generate interrupts at a very very high > > rate (maybe ~1000 second ish?) after migration. > > > > Some versions of qemu do it and some dont, but my attempts > > at bisection lead me to code that should be irrelevant. > > > > Prior to migration I see: > > > > 36461@1494504466.711929:e1000e_irq_pending_interrupts ICR PENDING: 0x100000 > > (ICR: 0x80100082, IMS: 0x1f00004) > > 36461@1494504466.711992:e1000e_irq_pending_interrupts ICR PENDING: 0x0 > > (ICR: 0x80000082, IMS: 0x1a00004) > > 36461@1494504466.712076:e1000e_irq_pending_interrupts ICR PENDING: 0x0 > > (ICR: 0x80000082, IMS: 0x1f00004) > > 36461@1494504466.712245:e1000e_irq_pending_interrupts ICR PENDING: 0x0 > > (ICR: 0x80000082, IMS: 0x1a00004) > > 36461@1494504466.712332:e1000e_irq_pending_interrupts ICR PENDING: 0x0 > > (ICR: 0x80000082, IMS: 0x1f00004) > > > > which I think the ICR means: > > 31 - int asserted > > 20 - RxQ0 - receive queue 0 interrupt > > 7 - RXT0 - receiver timer interrupt > > 1 - TXQE - Transmit Queue empty > > > > after migration it varies more, I'm seeing mostly: > > 21977@1494504516.320707:e1000e_irq_pending_interrupts ICR PENDING: > > 0x1000000 (ICR: 0x815000c2, IMS: 0x1a00004) > > 31 - int asserted > > 24 - 'Other' > > 22 - TxQ0 interrupt > > 20 - RxQ0 interrupt > > 07 - RXT0 Receiver timer interrupt > > 06 - RX0 - Receiver overrun > > 01 - TXQE - Transmit queue empty > > > > For reference this is https://bugzilla.redhat.com/show_bug.cgi?id=1447935 > > > > Dave > > -- > > Dr. David Alan Gilbert / dgilb...@redhat.com / Manchester, UK > -- Dr. David Alan Gilbert / dgilb...@redhat.com / Manchester, UK
