* Mike Galbraith | 2013-12-23 06:12:39 [+0100]: >P.S. > >virgin -rt7 doing tbench 64 + make -j64 > >[ 97.907960] perf samples too long (3138 > 2500), lowering >kernel.perf_event_max_sample_rate to 50000 >[ 103.047921] perf samples too long (5544 > 5000), lowering >kernel.perf_event_max_sample_rate to 25000 >[ 181.561271] perf samples too long (10318 > 10000), lowering >kernel.perf_event_max_sample_rate to 13000 >[ 184.243750] INFO: NMI handler (perf_event_nmi_handler) took too long to >run: 1.084 msecs >[ 248.914422] perf samples too long (19719 > 19230), lowering >kernel.perf_event_max_sample_rate to 7000 >[ 382.116674] NOHZ: local_softirq_pending 10 This is block
>[ 405.201593] perf samples too long (36824 > 35714), lowering >kernel.perf_event_max_sample_rate to 4000 >[ 444.704185] NOHZ: local_softirq_pending 08 >[ 444.704208] NOHZ: local_softirq_pending 08 >[ 444.704579] NOHZ: local_softirq_pending 08 >[ 444.704678] NOHZ: local_softirq_pending 08 >[ 444.705100] NOHZ: local_softirq_pending 08 >[ 444.705980] NOHZ: local_softirq_pending 08 >[ 444.705994] NOHZ: local_softirq_pending 08 >[ 444.708315] NOHZ: local_softirq_pending 08 >[ 444.710348] NOHZ: local_softirq_pending 08 and this is RX. Is your testcase heavy disk-io or heavy disk-io + network? Sebastian -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
