On Mon, Jul 02, 2012 at 04:10:52PM +0200, David Sterba wrote: > Finishing this report anyway, and will redo the tests again. > > Looking again into the logs, the first process snapshot (only D-state > processes) is much longer than process snapshot of containing all, > unfortuntelly I don't have timestamps recorded, but this suggests that it's > very slowly going on, so slowly that I considered it stalled looking at the > io graphs.
Fresh build, reboot, and single xfstests/224 run: during first ~20 seconds, there's high write activity, ie. file setup, then it goes to a "few tens-to-hundreds of KB every 4 seconds". Cpu is idle, sample output from dstat: ----total-cpu-usage---- --dsk/sda9- ---system-- usr sys idl wai hiq siq| read writ| int csw 1 1 99 0 0 0| 0 0 | 923 1856 0 1 98 0 1 0| 0 8192B| 904 2796 0 1 99 0 0 0| 0 0 | 945 1914 1 1 98 0 0 0| 0 0 | 899 1849 1 1 98 0 0 1| 0 0 | 906 1848 0 3 97 0 0 0| 0 20k| 901 3740 0 0 100 0 0 0| 0 0 | 905 1851 1 1 98 0 0 1| 0 0 | 946 1917 0 1 99 0 0 0| 0 0 | 904 1858 0 1 99 0 0 0| 0 8192B| 907 2805 1 1 98 0 0 1| 0 0 | 891 1836 0 1 99 0 0 0| 0 0 | 900 1847 0 1 99 0 0 0| 0 0 | 940 1905 1 4 95 0 0 0| 0 32k| 904 5153 1 2 97 0 0 0| 0 36k| 913 4240 0 1 99 0 0 0| 0 0 | 907 1849 0 1 99 0 0 0| 0 0 | 908 1852 1 1 98 0 0 1| 0 0 | 933 1901 1 2 98 0 0 0| 0 8192B| 916 2808 0 1 99 0 0 0| 0 0 | 917 1843 0 1 99 0 0 1| 0 0 | 908 1844 1 1 99 0 0 0| 0 0 | 905 1860 0 5 95 0 0 0| 0 36k| 943 7565 1 1 99 0 0 0| 0 0 | 911 1861 0 1 99 0 0 0| 0 0 | 910 1852 1 1 98 0 0 0| 0 0 | 944 1878 1 2 97 0 0 1| 0 16k| 898 3753 0 9 87 4 0 1| 0 1020k|1035 11k 0 19 74 7 0 1| 0 2092k|3052 24k 0 1 99 0 0 0| 0 0 | 909 1851 1 1 98 0 0 1| 0 0 | 915 1856 1 1 99 0 0 0| 0 0 | 896 1847 0 2 98 0 0 0| 0 8192B| 931 2847 0 1 99 0 0 0| 0 0 | 899 1850 1 1 98 0 0 1| 0 0 | 896 1861 0 1 99 0 0 0| 0 0 | 911 1855 1 5 94 0 0 0| 0 28k| 891 6521 0 9 87 3 0 1| 0 1100k| 963 11k 0 1 99 0 0 0| 0 0 | 905 1857 1 1 99 0 0 0| 0 0 | 895 1851 1 1 98 0 0 0| 0 0 | 911 1852 0 7 88 4 0 1| 0 700k| 911 8533 0 1 99 0 0 0| 0 0 | 940 1905 1 1 99 0 0 0| 0 0 | 912 1851 1 1 99 0 0 0| 0 0 | 895 1851 0 10 89 0 0 1| 0 100k| 912 13k and repeats more or less the same. Bisection in progress. david -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
