Follow-up:
I've now ran vmstat during load, which confirms the findings of
vmstat during idle time.
Slow system - one sample before and after load start included:
procs memory page disks faults cpu
r b w avm fre flt re pi po fr sr da0 pa0 in sy cs
us sy id
3 0 0 2468572 45476 14 0 0 0 18 4 0 0 1049 3201 5132
0 0 100
0 0 1 2468572 42388 1 0 0 0 154 0 5 0 6852 19813
19970 22 8 70
1 0 0 2468572 39332 1 0 0 0 155 0 11 0 6823 19661
19886 23 7 71
2 0 0 2468432 36336 1 0 0 0 160 0 6 0 7031 20356
20534 19 7 74
0 0 0 2468432 33228 1 0 0 0 156 0 5 0 6685 19420
19613 20 7 73
2 0 0 2468432 29928 1 0 0 0 164 0 5 0 7105 20483
20673 21 7 71
1 0 0 2468432 53568 1 0 0 0 153 1308 5 0 6688 19278
19537 21 8 72
1 0 1 2468432 50580 2 0 0 0 150 0 6 0 6408 18430
18693 24 7 69
0 0 0 2468432 47748 2 0 0 0 143 0 6 0 6323 18098
18328 26 7 67
0 0 0 2468432 45056 1 0 0 0 136 0 5 0 5607 17122
17062 16 7 77
0 0 0 2468432 45040 0 0 0 0 0 0 0 0 1093 3172 5164
0 0 100
Fast system:
procs memory page disks faults cpu
r b w avm fre flt re pi po fr sr da0 pa0 in sy cs
us sy id
0 0 0 2439276 39708 1 0 0 0 6 0 1 0 281 1029 992
6 1 93
0 0 0 2439276 39380 7 0 0 0 16 0 1 0 665 1341 1714
2 1 98
0 0 0 2439276 36472 5 0 0 0 145 0 6 0 5569 12409
14821 21 7 72
0 0 0 2439276 33512 1 0 0 0 149 0 5 0 5862 12597
15532 15 6 79
0 0 0 2439276 30600 1 0 0 0 146 0 4 0 5682 12655
15102 19 7 74
2 0 0 2439276 54144 1 0 0 5 152 1310 10 0 6006 12908
15964 17 6 77
0 0 0 2439276 51176 2 0 0 0 151 0 7 0 5348 11899
14190 22 6 72
2 0 0 2439276 48104 98 0 0 0 248 0 5 0 5924 12889
15757 15 7 78
1 0 0 2439276 45172 1 0 0 0 147 0 5 0 5882 12660
15624 16 7 77
2 0 0 2439276 42276 1 0 0 0 145 0 5 0 5558 12477
14864 21 6 73
0 0 0 2439276 39300 1 0 0 0 149 0 5 0 5842 12660
15556 14 7 79
0 0 0 2439276 36348 1 0 0 0 150 0 8 0 5659 12562
15042 21 5 74
0 0 0 2439276 33404 1 0 0 0 150 0 7 0 5868 12642
15536 14 6 80
0 0 0 2439276 30588 1 0 0 0 142 0 6 0 5449 11961
14487 19 7 74
0 0 0 2439276 30588 0 0 0 0 0 0 0 0 227 246 565
0 0 100
I'm tempted to upgrade the fast system to 6-STABLE (same rev as the
slow one). Even the slow system performs "adequately", though it
might help me isolate any potential hardware differences.
/Eirik
On Nov 28, 2005, at 15:54 , Joseph Koshy wrote:
EØ> *loads* more context switches than on the BETA-3 system.
EØ> I have not yet tried this during load
- Which scheduler have you configured (BSD or ULE)?
- What do the interrupt statistics show? Any interrupt
storms? Please check the mailing lists for a prior
discussion on interrupt storms on some motherboards.
- Could you post the dmesg output from the systems (I
presume there aren't any significant differences).
Please CC -stable too.
--
FreeBSD Volunteer, http://people.freebsd.org/~jkoshy
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