Am Fri, 14 Apr 2017 16:21:00 +0300 schrieb Shay Gover <govershay@xxxxxxxxx>: > Hi everyone, > > Recently I'm getting complete I/O freezes (mouse still working). > I think, it's a cache miss. > Sometimes I see on dmesg this error: > kernel: perf: interrupt took too long (2575 > 2500), lowering > kernel.perf_event_max_sample_rate to 77400 > (Numbers change) > > How can I debug this? Where should I look? > Currently I'm watching cache_bypass_misses Are you using VirtualBox somewhere? I only see such messages when running VirtualBox guests with high IO load. But the IO stack is not the problem here. -- Regards, Kai Replies to list-only preferred. -- 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
