Hello Zhu, Friday, October 31, 2014, 3:20:32 PM, you wrote: > Theoretically this livelock does exist all the way, however we can't > reproduce it on 3.17 kernel, or maybe it's just because the stress is > not big enough. Anyway it can be reproduced easily on RHEL6 kernel (we > have ported bcache back to the RHEL6 kernel). Dunno if it's caused by > the differences between the schedulers. My experience shows that scheduler can be a factor here. I regularly had the lockup issue while running a kernel with BFS scheduler (pf-kernel). Then I switched to CFS and lockups disappeared. (Now I'm running 3.17 with BFS and with the October 18 patch from the mailing list, no issues as of yet.) Pavel Goran -- To unsubscribe from this list: send the line "unsubscribe linux-bcache" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
