On Thu, 2011-04-28 at 17:28 +0200, Sedat Dilek wrote: > OK, I tried with the patch proposed by Thomas (0003): (thanks) > patches/0001-Revert-rcu-restrict-TREE_RCU-to-SMP-builds-with-PREE.patch > patches/0002-sched-Add-warning-when-RT-throttling-is-activated.patch > patches/0003-sched-Remove-skip_clock_update-check.patch > > >From the very beginning it looked as the system is "stable" due to: > > .rt_nr_running : 0 > .rt_throttled : 0 > > This changed when I started a simple tar-job to save my kernel > build-dir to an external USB-hdd. > From... > > .rt_nr_running : 1 > .rt_throttled : 1 > > ...To: > > .rt_nr_running : 2 > .rt_throttled : 1 > > Unfortunately, reducing all activities to a minimum load, did not > change from last known RT throttling state. > > Just noticed rt_time exceeds the value of 950 first time here: That would happen even if we did forced eviction. > ---------------------------------------------------------------------------------------------------------- > R cat 2652 115108.993460 1 120 > 115108.993460 1.147986 0.000000 / > -- > rt_rq[0]: > .rt_nr_running : 1 > .rt_throttled : 1 > .rt_time : 950.005460 > .rt_runtime : 950.000000 > ---------------------------------------------------------------------------------------------------------- > rcuc0 7 0.000000 56869 98 > 0.000000 981.385605 0.000000 / > -- > rt_rq[0]: > .rt_nr_running : 2 > .rt_throttled : 1 > .rt_time : 950.005460 > .rt_runtime : 950.000000 Still getting stuck. Eliminates the clock update optimization, but that seemed unlikely anyway. (I'll build a UP kernel and poke it) -Mike -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>