SCHED_4BSD in RELENG_7 disturbs workflow
Josh Carroll
josh.carroll at gmail.com
Tue Oct 16 15:01:29 PDT 2007
> Hi Josh, thanks for the report. How many CPUs are in your system? Can
> you give me the output of 'vmstat 5' over the course of one run on 4BSD
> and ULE? Or just one of them if you can't spare the time.
Hi Jeff,
The system has a single quad-core chip, namely an Intel Core 2 Quad
Q6600. Below is the requested vmstat output. Please let me know if you
need anything else (or if I should start a separate thread on -stable,
so as not to hijack this thread). I'm not sure what you wanted to see
from the vmstat output, but I do notice that with the ULE scheduler,
the idle percentage is higher than for 4BSD. As an aside, -threads 8
seems to be optimal, despite only have 4 cores. Here are the vmstat
outputs:
4BSD:
procs memory page disks faults cpu
r b w avm fre flt re pi po fr sr ad6 ad8 in sy
cs us sy id
1 1 0 412348 1589544 508 0 0 0 507 0 0 0 22 694
643 3 0 97
3 1 0 754860 1416760 8504 0 0 0 20 0 0 0 15 1339
2092 94 1 5
6 1 0 757940 1402456 565 0 0 0 1 0 0 0 18 1081
944 98 0 2
6 1 0 757940 1396564 188 0 0 0 3 0 15 0 45 1136
1075 96 0 4
7 1 0 757940 1393236 30 0 0 0 1 0 1 0 21 937
851 97 0 3
6 2 0 760192 1390756 60 0 0 1 43 0 5 0 25 1065
902 96 0 3
5 2 0 760192 1390304 3 0 0 0 100 0 0 0 19 1365
1240 98 0 2
4 1 0 758964 1388592 25 0 0 0 16 0 0 0 15 997
869 96 0 4
7 1 0 758964 1386132 3 0 0 0 0 0 0 0 14 810
766 96 0 4
5 1 0 758964 1383608 2 0 0 0 0 0 0 0 28 695
713 99 0 1
4 1 0 758964 1380372 26 0 0 0 1 0 7 0 29 806
842 96 0 3
7 1 0 759992 1377440 11 0 0 0 1 0 1 0 29 810
802 98 0 2
3 1 0 759992 1375412 2 0 0 0 2 0 0 0 20 879
785 97 0 3
4 1 0 759992 1373168 1 0 0 0 1 0 0 0 13 1032
876 95 0 5
5 1 0 759992 1371204 2 0 0 0 0 0 0 0 21 1197
984 85 0 15
5 1 0 759992 1367676 3 0 0 0 0 0 0 0 20 1155
897 98 0 1
4 1 0 759992 1362272 24 0 0 0 0 0 0 0 21 826
719 98 0 2
6 2 0 762244 1359028 58 0 0 0 43 0 1 0 23 1404
1071 96 0 4
procs memory page disks faults cpu
r b w avm fre flt re pi po fr sr ad6 ad8 in sy
cs us sy id
7 2 0 762244 1356036 7 0 0 0 0 0 0 0 21 1236
959 99 0 1
ULE:
procs memory page disks faults cpu
r b w avm fre flt re pi po fr sr ad6 ad8 in sy
cs us sy id
0 4 0 283788 1781208 2333 7 17 0 1633 0 0 0 211 4057
1702 1 1 99
6 2 0 631152 1606120 8180 5 23 0 30 0 65 0 157 915
371336 79 0 21
6 2 0 634228 1583908 906 0 0 0 3 0 5 0 32 566
940216 93 0 7
6 2 0 634228 1575052 227 0 0 0 0 0 1 0 96 915
694291 94 0 6
5 2 0 636276 1569768 54 0 0 0 0 0 1 0 79 722
984529 93 0 7
6 2 0 636276 1565184 3 0 0 0 0 0 0 0 56 749
615641 95 0 5
6 2 0 633024 1560904 182 0 0 0 224 0 15 0 64 892
554573 95 0 5
6 2 0 633024 1557648 1 0 0 0 0 0 0 0 21 1046
925070 94 0 6
8 1 0 631800 1553088 27 0 0 0 16 0 0 0 23 773
421820 96 0 3
7 1 0 631800 1548752 3 0 0 0 0 0 0 0 27 552
714116 96 0 4
7 1 0 631800 1543804 20 0 0 0 0 0 0 0 20 541
887702 94 0 6
6 1 0 632824 1537948 15 0 0 0 1 0 1 0 25 590
691248 95 0 5
7 1 0 632824 1533896 1 0 0 0 4 0 1 0 21 676
545389 95 0 5
7 1 0 632824 1528332 2 0 0 0 0 0 0 0 23 787
637327 93 0 7
5 1 0 632824 1525668 1 0 0 0 0 0 0 0 13 893
722130 90 0 10
3 1 0 632824 1520008 3 0 0 0 0 0 0 0 25 897
1216075 81 0 19
6 1 0 632824 1510980 25 0 0 0 0 0 0 0 33 932
1126821 90 0 10
7 1 0 632824 1503956 1 0 0 0 3 0 0 0 29 804
961332 93 0 7
procs memory page disks faults cpu
r b w avm fre flt re pi po fr sr ad6 ad8 in sy
cs us sy id
4 2 0 635076 1498816 59 0 0 0 43 0 0 0 24 1014
1188872 91 0 9
7 2 0 635076 1492764 7 0 0 0 0 0 1 0 28 1283
1085336 88 0 11
Thanks,
Josh
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