xcal are sometimes a signature of some problem. Of themselves they should be cheap. Below one sees that the sys time is rather small, so I'm inclined to think this is not a problem here pending further analysis of the problem. We see that all you CPUs are making what appears to progress with a number of syscl.
So this machine is underperforming, which means it's being given some work to do which is not happening in the expected time. I might have missed the initial post, but what data is there to support that ? CPU 19 is probably your network interrupt. Creating a fence around it so that no other work become pinned by it sometimes help : psrset -c 19. -r Gary Mills writes: > On Thu, Oct 18, 2007 at 10:32:58AM -0500, Mike Gerdts wrote: > > On 10/18/07, Gary Mills <[EMAIL PROTECTED]> wrote: > > > What's the command to show cross calls? > > > > mpstat will show it on a system basis. > > Thanks. This is on our T2000 Cyrus IMAP server with ZFS. It's > the second listing from `mpstat 5'. How do I recognize when there > are too many cross calls? > > CPU minf mjf xcal intr ithr csw icsw migr smtx srw syscl usr sys wt > idl > 0 29 0 2591 779 139 1037 8 78 214 1 785 2 10 0 > 87 > 1 12 0 1225 175 0 250 1 63 95 0 257 2 2 0 > 96 > 2 2 0 427 83 0 128 0 35 59 0 124 0 1 0 > 99 > 3 3 0 432 66 0 121 0 32 44 0 154 1 1 0 > 98 > 4 13 0 1231 159 0 338 0 20 83 0 281 1 3 0 > 96 > 5 11 0 991 164 2 337 1 22 69 0 299 1 2 0 > 97 > 6 3 0 512 101 0 205 0 18 51 0 185 0 4 0 > 96 > 7 8 0 598 119 0 246 0 20 68 0 211 1 1 0 > 97 > 8 9 0 947 119 0 245 1 20 52 0 264 1 1 0 > 98 > 9 2 0 258 110 0 229 0 19 58 0 77 0 4 0 > 95 > 10 13 0 2083 153 0 311 0 20 71 0 151 0 4 0 > 96 > 11 16 0 1434 119 0 262 1 21 53 0 385 1 2 0 > 97 > 12 20 0 1093 145 0 308 1 21 75 0 381 1 2 0 > 97 > 13 12 0 2163 154 0 318 2 23 68 0 211 1 2 0 > 97 > 14 22 0 2955 126 0 269 1 22 49 0 666 2 3 0 > 95 > 15 4 0 313 132 0 273 1 20 55 0 127 0 1 0 > 99 > 16 0 0 256 287 0 582 0 20 60 0 53 0 2 0 > 98 > 17 0 0 138 145 0 295 0 20 54 0 116 0 1 0 > 98 > 18 1 0 806 283 0 574 1 19 62 0 150 0 3 0 > 96 > 19 7 0 2290 2347 2181 347 2 23 105 0 169 1 7 0 > 92 > 20 1 0 671 605 496 226 0 18 61 0 140 0 2 0 > 98 > 21 7 0 1205 128 26 203 0 16 51 0 152 1 7 0 > 93 > 22 15 0 1045 107 0 218 1 18 56 0 243 0 2 0 > 98 > 23 27 0 2887 141 0 306 2 19 53 0 594 3 2 0 > 95 > 24 55 3 991 128 0 272 1 22 56 0 388 1 2 0 > 97 > 25 21 0 1857 124 0 264 1 19 59 0 461 1 2 0 > 97 > 26 16 0 835 172 0 358 0 19 93 0 267 1 2 0 > 97 > 27 10 0 1132 183 0 383 1 20 66 0 289 1 3 0 > 96 > 28 14 0 2761 103 0 225 1 20 53 0 379 1 3 0 > 95 > 29 5 0 618 99 0 212 0 19 56 0 197 0 3 0 > 97 > 30 16 0 538 87 0 178 1 18 47 0 185 1 1 0 > 98 > 31 0 0 661 1104 0 2319 3 24 206 0 78 0 8 0 > 91 > > -- > -Gary Mills- -Unix Support- -U of M Academic Computing and Networking- > _______________________________________________ > zfs-discuss mailing list > zfs-discuss@opensolaris.org > http://mail.opensolaris.org/mailman/listinfo/zfs-discuss _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
