Hi, On Dec 14, 2007 8:24 PM, Richard Elling <[EMAIL PROTECTED]> wrote: > Frank Penczek wrote: > > > > The performance is slightly disappointing. Does anyone have > > a similar setup and can anyone share some figures? > > Any pointers to possible improvements are greatly appreciated. > > > > > > Use a faster processor or change to a mirrored configuration. > raidz2 can become processor bound in the Reed-Soloman calculations > for the 2nd parity set. You should be able to see this in mpstat, and to > a coarser grain in vmstat. > -- richard
Thanks for the hint. When dd'ing to the pool, mpstat tells me: # mpstat 1 CPU minf mjf xcal intr ithr csw icsw migr smtx srw syscl usr sys wt idl 0 46 0 67 518 413 509 4 46 26 0 272 1 3 0 96 1 44 0 64 1765 141 576 5 46 26 0 256 1 3 0 96 CPU minf mjf xcal intr ithr csw icsw migr smtx srw syscl usr sys wt idl 0 0 0 10 804 698 1130 4 69 52 0 218 0 5 0 95 1 7 0 10 3301 390 1189 5 79 64 0 106 0 4 0 96 CPU minf mjf xcal intr ithr csw icsw migr smtx srw syscl usr sys wt idl 0 0 0 4 294 188 601 3 56 59 0 85 0 2 0 98 1 0 0 4 1029 319 593 1 57 61 0 78 0 2 0 98 CPU minf mjf xcal intr ithr csw icsw migr smtx srw syscl usr sys wt idl 0 0 0 2 303 198 238 2 33 10 0 145 0 0 0 100 1 0 0 4 283 74 261 3 30 8 0 159 0 1 0 99 CPU minf mjf xcal intr ithr csw icsw migr smtx srw syscl usr sys wt idl 0 2 0 113 1055 885 813 137 120 20 9 32833 7 57 0 36 1 90 2 74 3622 220 1328 74 118 49 18 19956 5 45 0 50 CPU minf mjf xcal intr ithr csw icsw migr smtx srw syscl usr sys wt idl 0 14 0 115 438 191 876 181 127 40 0 32425 7 54 0 39 1 14 0 197 1513 453 671 118 132 54 0 23929 5 53 0 42 CPU minf mjf xcal intr ithr csw icsw migr smtx srw syscl usr sys wt idl 0 0 0 98 901 679 1726 163 189 43 0 26718 5 48 0 47 1 0 0 121 3722 508 843 171 194 32 0 29947 6 53 0 41 CPU minf mjf xcal intr ithr csw icsw migr smtx srw syscl usr sys wt idl 0 0 0 50 418 185 905 162 109 21 0 31884 7 54 0 39 1 0 0 135 1772 550 670 102 107 37 0 23882 5 55 0 40 CPU minf mjf xcal intr ithr csw icsw migr smtx srw syscl usr sys wt idl 0 0 0 58 353 184 330 106 105 17 0 30134 28 47 0 26 1 1 0 74 862 250 604 128 106 27 0 26312 6 45 0 50 CPU minf mjf xcal intr ithr csw icsw migr smtx srw syscl usr sys wt idl 0 0 0 60 1087 851 1542 231 174 31 1 33800 7 61 0 32 1 0 0 136 4191 444 1072 125 165 39 1 20273 4 52 0 44 ... Based on the 'idl' column I interpret these numbers as "there are resources left" or is it me being naive? Cheers, Frank _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
